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Changelog for 20.3
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Alexey Milovidov
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CHANGELOG.md
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## ClickHouse release v20.3
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### ClickHouse release v20.3.2.1, 2020-03-12
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### Backward Incompatible Changes
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* Fixed the issue `file name too long` when sending data for `Distributed` tables for a large number of replicas. Fixed the issue that replica credentials were exposed in the server log. The format of directory name on disk was changed to `[shard{shard_index}[_replica{replica_index}]]`. [#8911](https://github.com/ClickHouse/ClickHouse/pull/8911) ([Mikhail Korotov](https://github.com/millb)) After you upgrade to the new version, you will not be able to downgrade without manual intervention, because old server version does not recognize the new directory format. If you want to downgrade, you have to manually rename the corresponding directories to the old format. This change is relevant only if you have used asynchronous `INSERT`s to `Distributed` tables. In the version 20.3.3 we will introduce a setting that will allow you to enable the new format gradually.
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* Changed the format of replication log entries for mutation commands. You have to wait for old mutations to process before installing the new version.
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* Implement simple memory profiler that dumps stacktraces to `system.trace_log` every N bytes over soft allocation limit [#8765](https://github.com/ClickHouse/ClickHouse/pull/8765) ([Ivan](https://github.com/abyss7)) [#9472](https://github.com/ClickHouse/ClickHouse/pull/9472) ([alexey-milovidov](https://github.com/alexey-milovidov)) The column of `system.trace_log` was renamed from `timer_type` to `trace_type`. This will require changes in third-party performance analysis and flamegraph processing tools.
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* Use OS thread id everywhere instead of internal thread number. This fixes [#7477](https://github.com/ClickHouse/ClickHouse/issues/7477) Old `clickhouse-client` cannot receive logs that are send from the server when the setting `send_logs_level` is enabled, because the names and types of the structured log messages were changed. On the other hand, different server versions can send logs with different types to each other. When you don't use the `send_logs_level` setting, you should not care. [#8954](https://github.com/ClickHouse/ClickHouse/pull/8954) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Remove `indexHint` function [#9542](https://github.com/ClickHouse/ClickHouse/pull/9542) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Remove `findClusterIndex`, `findClusterValue` functions. This fixes [#8641](https://github.com/ClickHouse/ClickHouse/issues/8641). If you were using these functions, send an email to `clickhouse-feedback@yandex-team.com` [#9543](https://github.com/ClickHouse/ClickHouse/pull/9543) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Now it's not allowed to create columns or add columns with `SELECT` subquery as default expression. [#9481](https://github.com/ClickHouse/ClickHouse/pull/9481) ([alesapin](https://github.com/alesapin))
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* Require aliases for subqueries in JOIN. [#9274](https://github.com/ClickHouse/ClickHouse/pull/9274) ([Artem Zuikov](https://github.com/4ertus2))
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* Improved `ALTER MODIFY/ADD` queries logic. Now you cannot `ADD` column without type, `MODIFY` default expression doesn't change type of column and `MODIFY` type doesn't loose default expression value. Fixes [#8669](https://github.com/ClickHouse/ClickHouse/issues/8669). ... [#9227](https://github.com/ClickHouse/ClickHouse/pull/9227) ([alesapin](https://github.com/alesapin))
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* Require server to be restarted to apply the changes in logging configuration. This is a temporary workaround to avoid the bug where the server logs to a deleted log file (see [#8696](https://github.com/ClickHouse/ClickHouse/issues/8696)). [#8707](https://github.com/ClickHouse/ClickHouse/pull/8707) ([Alexander Kuzmenkov](https://github.com/akuzm))
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* The setting `experimental_use_processors` is enabled by default. This setting enables usage of the new query pipeline. This is internal refactoring and we expect no visible changes. If you will see any issues, set it to back zero. [#8768](https://github.com/ClickHouse/ClickHouse/pull/8768) ([alexey-milovidov](https://github.com/alexey-milovidov))
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### New Feature
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* Add `Avro` and `AvroConfluent` input/output formats [#8571](https://github.com/ClickHouse/ClickHouse/pull/8571) ([Andrew Onyshchuk](https://github.com/oandrew)) [#8957](https://github.com/ClickHouse/ClickHouse/pull/8957) ([Andrew Onyshchuk](https://github.com/oandrew)) [#8717](https://github.com/ClickHouse/ClickHouse/pull/8717) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Multi-threaded and non-blocking updates of expired keys in `cache` dictionaries (with optional permission to read old ones). [#8303](https://github.com/ClickHouse/ClickHouse/pull/8303) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
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* Add query `ALTER ... MATERIALIZE TTL`. It runs mutation that forces to remove expired data by TTL and recalculates meta-information about TTL in all parts. [#8775](https://github.com/ClickHouse/ClickHouse/pull/8775) ([Anton Popov](https://github.com/CurtizJ))
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* Switch from HashJoin to MergeJoin (on disk) if needed [#9082](https://github.com/ClickHouse/ClickHouse/pull/9082) ([Artem Zuikov](https://github.com/4ertus2))
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* Added `MOVE PARTITION` command for `ALTER TABLE` [#4729](https://github.com/ClickHouse/ClickHouse/issues/4729) [#6168](https://github.com/ClickHouse/ClickHouse/pull/6168) ([Guillaume Tassery](https://github.com/YiuRULE))
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* Reloading storage configuration from configuration file on the fly. [#8594](https://github.com/ClickHouse/ClickHouse/pull/8594) ([Vladimir Chebotarev](https://github.com/excitoon))
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* Allowed to change `storage_policy` to not less rich one. [#8107](https://github.com/ClickHouse/ClickHouse/pull/8107) ([Vladimir Chebotarev](https://github.com/excitoon))
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* Added support for globs/wildcards for S3 storage and table function. [#8851](https://github.com/ClickHouse/ClickHouse/pull/8851) ([Vladimir Chebotarev](https://github.com/excitoon))
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* Implement `bitAnd`, `bitOr`, `bitXor`, `bitNot` for `FixedString(N)` datatype. [#9091](https://github.com/ClickHouse/ClickHouse/pull/9091) ([Guillaume Tassery](https://github.com/YiuRULE))
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* Added function `bitCount`. This fixes [#8702](https://github.com/ClickHouse/ClickHouse/issues/8702). [#8708](https://github.com/ClickHouse/ClickHouse/pull/8708) ([alexey-milovidov](https://github.com/alexey-milovidov)) [#8749](https://github.com/ClickHouse/ClickHouse/pull/8749) ([ikopylov](https://github.com/ikopylov))
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* Add `generateRandom` table function to generate random rows with given schema. Allows to populate arbitrary test table with data. [#8994](https://github.com/ClickHouse/ClickHouse/pull/8994) ([Ilya Yatsishin](https://github.com/qoega))
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* `JSONEachRowFormat`: support special case when objects enclosed in top-level array. [#8860](https://github.com/ClickHouse/ClickHouse/pull/8860) ([Kruglov Pavel](https://github.com/Avogar))
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* Now it's possible to create a column with `DEFAULT` expression which depends on a column with default `ALIAS` expression. [#9489](https://github.com/ClickHouse/ClickHouse/pull/9489) ([alesapin](https://github.com/alesapin))
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* Allow to specify `--limit` more than the source data size in `clickhouse-obfuscator`. The data will repeat itself with different random seed. ... [#9155](https://github.com/ClickHouse/ClickHouse/pull/9155) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Added `groupArraySample` function (similar to `groupArray`) with reservior sampling algorithm. [#8286](https://github.com/ClickHouse/ClickHouse/pull/8286) ([Amos Bird](https://github.com/amosbird))
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* Now you can monitor the size of update queue in `cache`/`complex_key_cache` dictionaries via system metrics. [#9413](https://github.com/ClickHouse/ClickHouse/pull/9413) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
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* Allow to use CRLF as a line separator in CSV output format with setting `output_format_csv_crlf_end_of_line` is set to 1 ... [#8934](https://github.com/ClickHouse/ClickHouse/pull/8934) [#8935](https://github.com/ClickHouse/ClickHouse/pull/8935) [#8963](https://github.com/ClickHouse/ClickHouse/pull/8963) ([Mikhail Korotov](https://github.com/millb))
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* Implement more functions of the [H3](https://github.com/uber/h3) API: `h3GetBaseCell`, `h3HexAreaM2`, `h3IndexesAreNeighbors`, `h3ToChildren`, `h3ToString` and `stringToH3` [#8938](https://github.com/ClickHouse/ClickHouse/pull/8938) ([Nico Mandery](https://github.com/nmandery))
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* New setting introduced: `max_parser_depth` to control maximum stack size and allow large complex queries. This fixes [#6681](https://github.com/ClickHouse/ClickHouse/issues/6681) and [#7668](https://github.com/ClickHouse/ClickHouse/issues/7668). [#8647](https://github.com/ClickHouse/ClickHouse/pull/8647) ([Maxim Smirnov](https://github.com/qMBQx8GH))
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* Add a setting `force_optimize_skip_unused_shards` setting to throw if skipping of unused shards is not possible [#8805](https://github.com/ClickHouse/ClickHouse/pull/8805) ([Azat Khuzhin](https://github.com/azat))
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* Allow to configure multiple disks/volumes for storing data for send in `Distributed` engine [#8756](https://github.com/ClickHouse/ClickHouse/pull/8756) ([Azat Khuzhin](https://github.com/azat))
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* Support storage policy (`<tmp_policy>`) for storing temporary data. [#8750](https://github.com/ClickHouse/ClickHouse/pull/8750) ([Azat Khuzhin](https://github.com/azat))
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* Added `X-ClickHouse-Exception-Code` HTTP header that is set if exception was thrown before sending data. This implements [#4971](https://github.com/ClickHouse/ClickHouse/issues/4971). ... [#8786](https://github.com/ClickHouse/ClickHouse/pull/8786) ([Mikhail Korotov](https://github.com/millb))
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* Added function `ifNotFinite`. It is just a syntactic sugar: `ifNotFinite(x, y) = isFinite(x) ? x : y`. [#8710](https://github.com/ClickHouse/ClickHouse/pull/8710) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Added `last_successful_update_time` column in `system.dictionaries` table [#9394](https://github.com/ClickHouse/ClickHouse/pull/9394) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
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* Add `blockSerializedSize` function (size on disk without compression) [#8952](https://github.com/ClickHouse/ClickHouse/pull/8952) ([Azat Khuzhin](https://github.com/azat))
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* Add function `moduloOrZero` [#9358](https://github.com/ClickHouse/ClickHouse/pull/9358) ([hcz](https://github.com/hczhcz))
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* Added system tables `system.zeros` and `system.zeros_mt` as well as tale functions `zeros()` and `zeros_mt()`. Tables (and table functions) contain single column with name `zero` and type `UInt8`. This column contains zeros. It is needed for test purposes as the fastest method to generate many rows. This fixes [#6604](https://github.com/ClickHouse/ClickHouse/issues/6604) [#9593](https://github.com/ClickHouse/ClickHouse/pull/9593) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
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### Experimental Features
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* Add new compact format of parts in `MergeTree`-family tables in which all columns are stored in one file. It helps to increase performance of small and frequent inserts. The old format (one file per column) is now called wide. Data storing format is controlled by settings `min_bytes_for_wide_part` and `min_rows_for_wide_part`. [#8290](https://github.com/ClickHouse/ClickHouse/pull/8290) ([Anton Popov](https://github.com/CurtizJ))
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* Support for S3 storage for `Log`, `TinyLog` and `StripeLog` tables. [#8862](https://github.com/ClickHouse/ClickHouse/pull/8862) ([Pavel Kovalenko](https://github.com/Jokser))
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### Bug Fix
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* Fixed inconsistent whitespaces in log messages. [#9322](https://github.com/ClickHouse/ClickHouse/pull/9322) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Fix bug in which arrays of unnamed tuples were flattened as Nested structures on table creation. [#8866](https://github.com/ClickHouse/ClickHouse/pull/8866) ([achulkov2](https://github.com/achulkov2))
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* Fixed the issue when "Too many open files" error may happen if there are too many files matching glob pattern in `File` table or `file` table function. Now files are opened lazily. This fixes [#8857](https://github.com/ClickHouse/ClickHouse/issues/8857) [#8861](https://github.com/ClickHouse/ClickHouse/pull/8861) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* DROP TEMPORARY TABLE now drops only temporary table. [#8907](https://github.com/ClickHouse/ClickHouse/pull/8907) ([Vitaly Baranov](https://github.com/vitlibar))
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* Remove outdated partition when we shutdown the server or DETACH/ATTACH a table. [#8602](https://github.com/ClickHouse/ClickHouse/pull/8602) ([Guillaume Tassery](https://github.com/YiuRULE))
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* For how the default disk calculates the free space from `data` subdirectory. Fixed the issue when the amount of free space is not calculated correctly if the `data` directory is mounted to a separate device (rare case). This fixes [#7441](https://github.com/ClickHouse/ClickHouse/issues/7441) ... [#9257](https://github.com/ClickHouse/ClickHouse/pull/9257) ([Mikhail Korotov](https://github.com/millb))
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* Allow comma (cross) join with IN () inside. [#9251](https://github.com/ClickHouse/ClickHouse/pull/9251) ([Artem Zuikov](https://github.com/4ertus2))
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* Allow to rewrite CROSS to INNER JOIN if there's [NOT] LIKE operator in WHERE section. ... [#9229](https://github.com/ClickHouse/ClickHouse/pull/9229) ([Artem Zuikov](https://github.com/4ertus2))
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* Fix possible incorrect result after `GROUP BY` with enabled setting `distributed_aggregation_memory_efficient`. Fixes [#9134](https://github.com/ClickHouse/ClickHouse/issues/9134). [#9289](https://github.com/ClickHouse/ClickHouse/pull/9289) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
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* Found keys were counted as missed in metrics of cache dictionaries. [#9411](https://github.com/ClickHouse/ClickHouse/pull/9411) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
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* Fix replication protocol incompatibility introduced in [#8598](https://github.com/ClickHouse/ClickHouse/issues/8598). [#9412](https://github.com/ClickHouse/ClickHouse/pull/9412) ([alesapin](https://github.com/alesapin))
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* Fixed race condition on `queue_task_handle` at the startup of `ReplicatedMergeTree` tables. [#9552](https://github.com/ClickHouse/ClickHouse/pull/9552) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* The token `NOT` didn't work in `SHOW TABLES NOT LIKE` query [#8727](https://github.com/ClickHouse/ClickHouse/issues/8727) [#8940](https://github.com/ClickHouse/ClickHouse/pull/8940) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Added range check to function `h3EdgeLengthM`. Without this check, buffer overflow is possible. [#8945](https://github.com/ClickHouse/ClickHouse/pull/8945) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Fixed up a bug in batched calculations of ternary logical OPs on multiple arguments (more than 10). [#8718](https://github.com/ClickHouse/ClickHouse/pull/8718) ([Alexander Kazakov](https://github.com/Akazz))
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* Fix error of PREWHERE optimization, which could lead to segfaults or `Inconsistent number of columns got from MergeTreeRangeReader` exception. [#9024](https://github.com/ClickHouse/ClickHouse/pull/9024) ([Anton Popov](https://github.com/CurtizJ))
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* Fix unexpected `Timeout exceeded while reading from socket` exception, which randomly happens on secure connection before timeout actually exceeded and when query profiler is enabled. Also add `connect_timeout_with_failover_secure_ms` settings (default 100ms), which is similar to `connect_timeout_with_failover_ms`, but is used for secure connections (because SSL handshake is slower, than ordinary TCP connection) [#9026](https://github.com/ClickHouse/ClickHouse/pull/9026) ([tavplubix](https://github.com/tavplubix))
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* Fix bug with mutations finalization, when mutation may hang in state with `parts_to_do=0` and `is_done=0`. [#9022](https://github.com/ClickHouse/ClickHouse/pull/9022) ([alesapin](https://github.com/alesapin))
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* Use new ANY JOIN logic with `partial_merge_join` setting. It's possible to make `ANY|ALL|SEMI LEFT` and `ALL INNER` joins with `partial_merge_join=1` now. [#8932](https://github.com/ClickHouse/ClickHouse/pull/8932) ([Artem Zuikov](https://github.com/4ertus2))
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* Shard now clamps the settings got from the initiator to the shard's constaints instead of throwing an exception. This fix allows to send queries to a shard with another constraints. [#9447](https://github.com/ClickHouse/ClickHouse/pull/9447) ([Vitaly Baranov](https://github.com/vitlibar))
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* Fixed memory management problem in `MergeTreeReadPool`. [#8791](https://github.com/ClickHouse/ClickHouse/pull/8791) ([Vladimir Chebotarev](https://github.com/excitoon))
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* Fix `toDecimal*OrNull()` functions family when called with string `e`. Fixes [#8312](https://github.com/ClickHouse/ClickHouse/issues/8312) [#8764](https://github.com/ClickHouse/ClickHouse/pull/8764) ([Artem Zuikov](https://github.com/4ertus2))
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* Make sure that `FORMAT Null` sends no data to the client. [#8767](https://github.com/ClickHouse/ClickHouse/pull/8767) ([Alexander Kuzmenkov](https://github.com/akuzm))
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* Fix bug that timestamp in `LiveViewBlockInputStream` will not updated. `LIVE VIEW` is an experimental feature. [#8644](https://github.com/ClickHouse/ClickHouse/pull/8644) ([vxider](https://github.com/Vxider)) [#8625](https://github.com/ClickHouse/ClickHouse/pull/8625) ([vxider](https://github.com/Vxider))
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* Fixed `ALTER MODIFY TTL` wrong behavior which did not allow to delete old TTL expressions. [#8422](https://github.com/ClickHouse/ClickHouse/pull/8422) ([Vladimir Chebotarev](https://github.com/excitoon))
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* Fixed UBSan report in MergeTreeIndexSet. This fixes [#9250](https://github.com/ClickHouse/ClickHouse/issues/9250) [#9365](https://github.com/ClickHouse/ClickHouse/pull/9365) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Fixed the behaviour of `match` and `extract` functions when haystack has zero bytes. The behaviour was wrong when haystack was constant. This fixes [#9160](https://github.com/ClickHouse/ClickHouse/issues/9160) [#9163](https://github.com/ClickHouse/ClickHouse/pull/9163) ([alexey-milovidov](https://github.com/alexey-milovidov)) [#9345](https://github.com/ClickHouse/ClickHouse/pull/9345) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Avoid throwing from destructor in Apache Avro 3rd-party library. [#9066](https://github.com/ClickHouse/ClickHouse/pull/9066) ([Andrew Onyshchuk](https://github.com/oandrew))
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* Don't commit a batch polled from `Kafka` partially as it can lead to holes in data. [#8876](https://github.com/ClickHouse/ClickHouse/pull/8876) ([filimonov](https://github.com/filimonov))
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* Fix `joinGet` with nullable return types. https://github.com/ClickHouse/ClickHouse/issues/8919 [#9014](https://github.com/ClickHouse/ClickHouse/pull/9014) ([Amos Bird](https://github.com/amosbird))
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* Fix data incompatibility when compressed with `T64` codec. [#9016](https://github.com/ClickHouse/ClickHouse/pull/9016) ([Artem Zuikov](https://github.com/4ertus2)) Fix data type ids in `T64` compression codec that leads to wrong (de)compression in affected versions. [#9033](https://github.com/ClickHouse/ClickHouse/pull/9033) ([Artem Zuikov](https://github.com/4ertus2))
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* Add setting `enable_early_constant_folding` and disable it in some cases that leads to errors. [#9010](https://github.com/ClickHouse/ClickHouse/pull/9010) ([Artem Zuikov](https://github.com/4ertus2))
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* Fix pushdown predicate optimizer with VIEW and enable the test [#9011](https://github.com/ClickHouse/ClickHouse/pull/9011) ([Winter Zhang](https://github.com/zhang2014))
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* Fix segfault in `Merge` tables, that can happen when reading from `File` storages [#9387](https://github.com/ClickHouse/ClickHouse/pull/9387) ([tavplubix](https://github.com/tavplubix))
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* Added a check for storage policy in `ATTACH PARTITION FROM`, `REPLACE PARTITION`, `MOVE TO TABLE`. Otherwise it could make data of part inaccessible after restart and prevent ClickHouse to start. [#9383](https://github.com/ClickHouse/ClickHouse/pull/9383) ([Vladimir Chebotarev](https://github.com/excitoon))
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* Fix alters if there is TTL set for table. [#8800](https://github.com/ClickHouse/ClickHouse/pull/8800) ([Anton Popov](https://github.com/CurtizJ))
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* Fix race condition that can happen when `SYSTEM RELOAD ALL DICTIONARIES` is executed while some dictionary is being modified/added/removed. [#8801](https://github.com/ClickHouse/ClickHouse/pull/8801) ([Vitaly Baranov](https://github.com/vitlibar))
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* In previous versions `Memory` database engine use empty data path, so tables are created in `path` directory (e.g. `/var/lib/clickhouse/`), not in data directory of database (e.g. `/var/lib/clickhouse/db_name`). [#8753](https://github.com/ClickHouse/ClickHouse/pull/8753) ([tavplubix](https://github.com/tavplubix))
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* Fixed wrong log messages about missing default disk or policy. [#9530](https://github.com/ClickHouse/ClickHouse/pull/9530) ([Vladimir Chebotarev](https://github.com/excitoon))
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* Fix not(has()) for the bloom_filter index of array types. [#9407](https://github.com/ClickHouse/ClickHouse/pull/9407) ([achimbab](https://github.com/achimbab))
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* Allow first column(s) in a table with `Log` engine be an alias [#9231](https://github.com/ClickHouse/ClickHouse/pull/9231) ([Ivan](https://github.com/abyss7))
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* Fix order of ranges while reading from `MergeTree` table in one thread. It could lead to exceptions from `MergeTreeRangeReader` or wrong query results. [#9050](https://github.com/ClickHouse/ClickHouse/pull/9050) ([Anton Popov](https://github.com/CurtizJ))
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* Make `reinterpretAsFixedString` to return `FixedString` instead of `String`. [#9052](https://github.com/ClickHouse/ClickHouse/pull/9052) ([Andrew Onyshchuk](https://github.com/oandrew))
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* Avoid extremely rare cases when the user can get wrong error message (`Success` instead of detailed error description). [#9457](https://github.com/ClickHouse/ClickHouse/pull/9457) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Do not crash when using `Template` format with empty row template. [#8785](https://github.com/ClickHouse/ClickHouse/pull/8785) ([Alexander Kuzmenkov](https://github.com/akuzm))
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* Metadata files for system tables could be created in wrong place [#8653](https://github.com/ClickHouse/ClickHouse/pull/8653) ([tavplubix](https://github.com/tavplubix)) Fixes [#8581](https://github.com/ClickHouse/ClickHouse/issues/8581).
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* Fix data race on exception_ptr in cache dictionary [#8303](https://github.com/ClickHouse/ClickHouse/issues/8303). [#9379](https://github.com/ClickHouse/ClickHouse/pull/9379) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov))
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* Do not throw an exception for query `ATTACH TABLE IF NOT EXISTS`. Previously it was thrown if table already exists, despite the `IF NOT EXISTS` clause. [#8967](https://github.com/ClickHouse/ClickHouse/pull/8967) ([Anton Popov](https://github.com/CurtizJ))
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* Fixed missing closing paren in exception message. [#8811](https://github.com/ClickHouse/ClickHouse/pull/8811) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Avoid message `Possible deadlock avoided` at the startup of clickhouse-client in interactive mode. [#9455](https://github.com/ClickHouse/ClickHouse/pull/9455) ([alexey-milovidov](https://github.com/alexey-milovidov))
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* Fixed the issue when padding at the end of base64 encoded value can be malformed. Update base64 library. This fixes [#9491](https://github.com/ClickHouse/ClickHouse/issues/9491), closes [#9492](https://github.com/ClickHouse/ClickHouse/issues/9492) [#9500](https://github.com/ClickHouse/ClickHouse/pull/9500) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Prevent losing data in `Kafka` in rare cases when exception happens after reading suffix but before commit. Fixes [#9378](https://github.com/ClickHouse/ClickHouse/issues/9378) [#9507](https://github.com/ClickHouse/ClickHouse/pull/9507) ([filimonov](https://github.com/filimonov))
|
||||
* Fixed exception in `DROP TABLE IF EXISTS` [#8663](https://github.com/ClickHouse/ClickHouse/pull/8663) ([Nikita Vasilev](https://github.com/nikvas0))
|
||||
* Fix crash when a user tries to `ALTER MODIFY SETTING` for old-formated `MergeTree` table engines family. [#9435](https://github.com/ClickHouse/ClickHouse/pull/9435) ([alesapin](https://github.com/alesapin))
|
||||
* Support for UInt64 numbers that don't fit in Int64 in JSON-related functions. Update SIMDJSON to master. This fixes [#9209](https://github.com/ClickHouse/ClickHouse/issues/9209) [#9344](https://github.com/ClickHouse/ClickHouse/pull/9344) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Fixed execution of inversed predicates when non-strictly monotinic functional index is used. [#9223](https://github.com/ClickHouse/ClickHouse/pull/9223) ([Alexander Kazakov](https://github.com/Akazz))
|
||||
* Don't try to fold `IN` constant in `GROUP BY` [#8868](https://github.com/ClickHouse/ClickHouse/pull/8868) ([Amos Bird](https://github.com/amosbird))
|
||||
* Fix bug in `ALTER DELETE` mutations which leads to index corruption. This fixes [#9019](https://github.com/ClickHouse/ClickHouse/issues/9019) and [#8982](https://github.com/ClickHouse/ClickHouse/issues/8982). Additionally fix extremely rare race conditions in `ReplicatedMergeTree` `ALTER` queries. [#9048](https://github.com/ClickHouse/ClickHouse/pull/9048) ([alesapin](https://github.com/alesapin))
|
||||
* When the setting `compile_expressions` is enabled, you can get `unexpected column` in `LLVMExecutableFunction` when we use `Nullable` type [#8910](https://github.com/ClickHouse/ClickHouse/pull/8910) ([Guillaume Tassery](https://github.com/YiuRULE))
|
||||
* Multiple fixes for `Kafka` engine: 1) fix duplicates that were appearing during consumer group rebalance. 2) Fix rare 'holes' appeared when data were polled from several partitions with one poll and committed partially (now we always process / commit the whole polled block of messages). 3) Fix flushes by block size (before that only flushing by timeout was working properly). 4) better subscription procedure (with assignment feedback). 5) Make tests work faster (with default intervals and timeouts). Due to the fact that data was not flushed by block size before (as it should according to documentation), that PR may lead to some performance degradation with default settings (due to more often & tinier flushes which are less optimal). If you encounter the performance issue after that change - please increase `kafka_max_block_size` in the table to the bigger value ( for example `CREATE TABLE ...Engine=Kafka ... SETTINGS ... kafka_max_block_size=524288`). Fixes [#7259](https://github.com/ClickHouse/ClickHouse/issues/7259) [#8917](https://github.com/ClickHouse/ClickHouse/pull/8917) ([filimonov](https://github.com/filimonov))
|
||||
* Fix `Parameter out of bound` exception in some queries after PREWHERE optimizations. [#8914](https://github.com/ClickHouse/ClickHouse/pull/8914) ([Baudouin Giard](https://github.com/bgiard))
|
||||
* Fixed the case of mixed-constness of arguments of function `arrayZip`. [#8705](https://github.com/ClickHouse/ClickHouse/pull/8705) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* When executing `CREATE` query, fold constant expressions in storage engine arguments. Replace empty database name with current database. Fixes [#6508](https://github.com/ClickHouse/ClickHouse/issues/6508), [#3492](https://github.com/ClickHouse/ClickHouse/issues/3492) [#9262](https://github.com/ClickHouse/ClickHouse/pull/9262) ([tavplubix](https://github.com/tavplubix))
|
||||
* Now it's not possible to create or add columns with simple cyclic aliases like `a DEFAULT b, b DEFAULT a`. [#9603](https://github.com/ClickHouse/ClickHouse/pull/9603) ([alesapin](https://github.com/alesapin))
|
||||
* Fixed a bug with double move which may corrupt original part. This is relevant if you use `ALTER TABLE MOVE` [#8680](https://github.com/ClickHouse/ClickHouse/pull/8680) ([Vladimir Chebotarev](https://github.com/excitoon))
|
||||
* Allow `interval` identifier to correctly parse without backticks. Fixed issue when a query cannot be executed even if the `interval` identifier is enclosed in backticks or double quotes. This fixes [#9124](https://github.com/ClickHouse/ClickHouse/issues/9124). [#9142](https://github.com/ClickHouse/ClickHouse/pull/9142) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Fixed fuzz test and incorrect behaviour of `bitTestAll`/`bitTestAny` functions. [#9143](https://github.com/ClickHouse/ClickHouse/pull/9143) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Fix possible crash/wrong number of rows in `LIMIT n WITH TIES` when there are a lot of rows equal to n'th row. [#9464](https://github.com/ClickHouse/ClickHouse/pull/9464) ([tavplubix](https://github.com/tavplubix))
|
||||
* Fix mutations with parts written with enabled `insert_quorum`. [#9463](https://github.com/ClickHouse/ClickHouse/pull/9463) ([alesapin](https://github.com/alesapin))
|
||||
* Fix data race at destruction of `Poco::HTTPServer`. It could happen when server is started and immediately shut down. [#9468](https://github.com/ClickHouse/ClickHouse/pull/9468) ([Anton Popov](https://github.com/CurtizJ))
|
||||
* Fix bug in which a misleading error message was shown when running `SHOW CREATE TABLE a_table_that_does_not_exist`. [#8899](https://github.com/ClickHouse/ClickHouse/pull/8899) ([achulkov2](https://github.com/achulkov2))
|
||||
* Fixed `Parameters are out of bound` exception in some rare cases when we have a constant in the `SELECT` clause when we have an `ORDER BY` and a `LIMIT` clause. [#8892](https://github.com/ClickHouse/ClickHouse/pull/8892) ([Guillaume Tassery](https://github.com/YiuRULE))
|
||||
* Fix mutations finalization, when already done mutation can have status `is_done=0`. [#9217](https://github.com/ClickHouse/ClickHouse/pull/9217) ([alesapin](https://github.com/alesapin))
|
||||
* Prevent from executing `ALTER ADD INDEX` for MergeTree tables with old syntax, because it doesn't work. [#8822](https://github.com/ClickHouse/ClickHouse/pull/8822) ([Mikhail Korotov](https://github.com/millb))
|
||||
* During server startup do not access table, which `LIVE VIEW` depends on, so server will be able to start. Also remove `LIVE VIEW` dependencies when detaching `LIVE VIEW`. `LIVE VIEW` is an experimental feature. [#8824](https://github.com/ClickHouse/ClickHouse/pull/8824) ([tavplubix](https://github.com/tavplubix))
|
||||
* Fix possible segfault in `MergeTreeRangeReader`, while executing `PREWHERE`. [#9106](https://github.com/ClickHouse/ClickHouse/pull/9106) ([Anton Popov](https://github.com/CurtizJ))
|
||||
* Fix possible mismatched checksums with column TTLs. [#9451](https://github.com/ClickHouse/ClickHouse/pull/9451) ([Anton Popov](https://github.com/CurtizJ))
|
||||
* Fixed a bug when parts were not being moved in background by TTL rules in case when there is only one volume. [#8672](https://github.com/ClickHouse/ClickHouse/pull/8672) ([Vladimir Chebotarev](https://github.com/excitoon))
|
||||
* Fixed the issue `Method createColumn() is not implemented for data type Set`. This fixes [#7799](https://github.com/ClickHouse/ClickHouse/issues/7799). [#8674](https://github.com/ClickHouse/ClickHouse/pull/8674) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Now we will try finalize mutations more frequently. [#9427](https://github.com/ClickHouse/ClickHouse/pull/9427) ([alesapin](https://github.com/alesapin))
|
||||
* Fix `intDiv` by minus one constant [#9351](https://github.com/ClickHouse/ClickHouse/pull/9351) ([hcz](https://github.com/hczhcz))
|
||||
* Fix possible race condition in `BlockIO`. [#9356](https://github.com/ClickHouse/ClickHouse/pull/9356) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
|
||||
* Fix bug leading to server termination when trying to use / drop `Kafka` table created with wrong parameters. [#9513](https://github.com/ClickHouse/ClickHouse/pull/9513) ([filimonov](https://github.com/filimonov))
|
||||
* Added workaround if OS returns wrong result for `timer_create` function. [#8837](https://github.com/ClickHouse/ClickHouse/pull/8837) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Fixed error in usage of `min_marks_for_seek` parameter. Fixed the error message when there is no sharding key in Distributed table and we try to skip unused shards. [#8908](https://github.com/ClickHouse/ClickHouse/pull/8908) ([Azat Khuzhin](https://github.com/azat))
|
||||
|
||||
### Improvement
|
||||
* Implement `ALTER MODIFY/DROP` queries on top of mutations for `ReplicatedMergeTree*` engines family. Now `ALTERS` blocks only at the metadata update stage, and don't block after that. [#8701](https://github.com/ClickHouse/ClickHouse/pull/8701) ([alesapin](https://github.com/alesapin))
|
||||
* Add ability to rewrite CROSS to INNER JOINs with `WHERE` section containing unqialified names. [#9512](https://github.com/ClickHouse/ClickHouse/pull/9512) ([Artem Zuikov](https://github.com/4ertus2))
|
||||
* Make `SHOW TABLES` and `SHOW DATABASES` queries support the `WHERE` expressions and `FROM`/`IN` [#9076](https://github.com/ClickHouse/ClickHouse/pull/9076) ([sundyli](https://github.com/sundy-li))
|
||||
* Added a setting `deduplicate_blocks_in_dependent_materialized_views`. [#9070](https://github.com/ClickHouse/ClickHouse/pull/9070) ([urykhy](https://github.com/urykhy))
|
||||
* After recent changes MySQL client started to print binary strings in hex thereby making them not readable ([#9032](https://github.com/ClickHouse/ClickHouse/issues/9032)). The workaround in ClickHouse is to mark string columns as UTF-8, which is not always, but usually the case. [#9079](https://github.com/ClickHouse/ClickHouse/pull/9079) ([Yuriy Baranov](https://github.com/yurriy))
|
||||
* Add support of String and FixedString keys for `sumMap` [#8903](https://github.com/ClickHouse/ClickHouse/pull/8903) ([Baudouin Giard](https://github.com/bgiard))
|
||||
* Support string keys in SummingMergeTree maps [#8933](https://github.com/ClickHouse/ClickHouse/pull/8933) ([Baudouin Giard](https://github.com/bgiard))
|
||||
* Signal termination of thread to the thread pool even if the thread has thrown exception [#8736](https://github.com/ClickHouse/ClickHouse/pull/8736) ([Ding Xiang Fei](https://github.com/dingxiangfei2009))
|
||||
* Allow to set `query_id` in `clickhouse-benchmark` [#9416](https://github.com/ClickHouse/ClickHouse/pull/9416) ([Anton Popov](https://github.com/CurtizJ))
|
||||
* Don't allow strange expressions in `ALTER TABLE ... PARTITION partition` query. This addresses [#7192](https://github.com/ClickHouse/ClickHouse/issues/7192) [#8835](https://github.com/ClickHouse/ClickHouse/pull/8835) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* The table `system.table_engines` now provides information about feature support (like `supports_ttl` or `supports_sort_order`). [#8830](https://github.com/ClickHouse/ClickHouse/pull/8830) ([Max Akhmedov](https://github.com/zlobober))
|
||||
* Enable `system.metric_log` by default. It will contain rows with values of ProfileEvents, CurrentMetrics collected with "collect_interval_milliseconds" interval (one second by default). The table is very small (usually in order of megabytes) and collecting this data by default is reasonable. [#9225](https://github.com/ClickHouse/ClickHouse/pull/9225) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Initialize query profiler for all threads in a group, e.g. it allows to fully profile insert-queries. Fixes [#6964](https://github.com/ClickHouse/ClickHouse/issues/6964) [#8874](https://github.com/ClickHouse/ClickHouse/pull/8874) ([Ivan](https://github.com/abyss7))
|
||||
* Now temporary `LIVE VIEW` is created by `CREATE LIVE VIEW name WITH TIMEOUT [42] ...` instead of `CREATE TEMPORARY LIVE VIEW ...`, because the previous syntax was not consistent with `CREATE TEMPORARY TABLE ...` [#9131](https://github.com/ClickHouse/ClickHouse/pull/9131) ([tavplubix](https://github.com/tavplubix))
|
||||
* Add text_log.level configuration parameter to limit entries that goes to `system.text_log` table [#8809](https://github.com/ClickHouse/ClickHouse/pull/8809) ([Azat Khuzhin](https://github.com/azat))
|
||||
* Allow to put downloaded part to a disks/volumes according to TTL rules [#8598](https://github.com/ClickHouse/ClickHouse/pull/8598) ([Vladimir Chebotarev](https://github.com/excitoon))
|
||||
* For external MySQL dictionaries, allow to mutualize MySQL connection pool to "share" them among dictionaries. This option significantly reduces the number of connections to MySQL servers. [#9409](https://github.com/ClickHouse/ClickHouse/pull/9409) ([Clément Rodriguez](https://github.com/clemrodriguez))
|
||||
* Show nearest query execution time for quantiles in `clickhouse-benchmark` output instead of interpolated values. It's better to show values that correspond to the execution time of some queries. [#8712](https://github.com/ClickHouse/ClickHouse/pull/8712) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Possibility to add key & timestamp for the message when inserting data to Kafka. Fixes [#7198](https://github.com/ClickHouse/ClickHouse/issues/7198) [#8969](https://github.com/ClickHouse/ClickHouse/pull/8969) ([filimonov](https://github.com/filimonov))
|
||||
* If server is run from terminal, highlight thread number, query id and log priority by colors. This is for improved readability of correlated log messages for developers. [#8961](https://github.com/ClickHouse/ClickHouse/pull/8961) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Better exception message while loading tables for `Ordinary` database. [#9527](https://github.com/ClickHouse/ClickHouse/pull/9527) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Implement `arraySlice` for arrays with aggregate function states. This fixes [#9388](https://github.com/ClickHouse/ClickHouse/issues/9388) [#9391](https://github.com/ClickHouse/ClickHouse/pull/9391) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Allow constant functions and constant arrays to be used on the right side of IN operator. [#8813](https://github.com/ClickHouse/ClickHouse/pull/8813) ([Anton Popov](https://github.com/CurtizJ))
|
||||
* If zookeeper exception has happened while fetching data for system.replicas, display it in a separate column. This implements [#9137](https://github.com/ClickHouse/ClickHouse/issues/9137) [#9138](https://github.com/ClickHouse/ClickHouse/pull/9138) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Atomically remove MergeTree data parts on destroy. [#8402](https://github.com/ClickHouse/ClickHouse/pull/8402) ([Vladimir Chebotarev](https://github.com/excitoon))
|
||||
* Support row-level security for Distributed tables. [#8926](https://github.com/ClickHouse/ClickHouse/pull/8926) ([Ivan](https://github.com/abyss7))
|
||||
* Now we recognize suffix (like KB, KiB...) in settings values. [#8072](https://github.com/ClickHouse/ClickHouse/pull/8072) ([Mikhail Korotov](https://github.com/millb))
|
||||
* Prevent out of memory while constructing result of a large JOIN. [#8637](https://github.com/ClickHouse/ClickHouse/pull/8637) ([Artem Zuikov](https://github.com/4ertus2))
|
||||
* Added names of clusters to suggestions in interactive mode in `clickhouse-client`. [#8709](https://github.com/ClickHouse/ClickHouse/pull/8709) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Initialize query profiler for all threads in a group, e.g. it allows to fully profile insert-queries [#8820](https://github.com/ClickHouse/ClickHouse/pull/8820) ([Ivan](https://github.com/abyss7))
|
||||
* Added column `exception_code` in `system.query_log` table. [#8770](https://github.com/ClickHouse/ClickHouse/pull/8770) ([Mikhail Korotov](https://github.com/millb))
|
||||
* Enabled MySQL compatibility server on port `9004` in the default server configuration file. Fixed password generation command in the example in configuration. [#8771](https://github.com/ClickHouse/ClickHouse/pull/8771) ([Yuriy Baranov](https://github.com/yurriy))
|
||||
* Prevent abort on shutdown if the filesystem is readonly. This fixes [#9094](https://github.com/ClickHouse/ClickHouse/issues/9094) [#9100](https://github.com/ClickHouse/ClickHouse/pull/9100) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Better exception message when length is required in HTTP POST query. [#9453](https://github.com/ClickHouse/ClickHouse/pull/9453) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Add `_path` and `_file` virtual columns to `HDFS` and `File` engines and `hdfs` and `file` table functions [#8489](https://github.com/ClickHouse/ClickHouse/pull/8489) ([Olga Khvostikova](https://github.com/stavrolia))
|
||||
* Fix error `Cannot find column` while inserting into `MATERIALIZED VIEW` in case if new column was added to view's internal table. [#8766](https://github.com/ClickHouse/ClickHouse/pull/8766) [#8788](https://github.com/ClickHouse/ClickHouse/pull/8788) ([vzakaznikov](https://github.com/vzakaznikov)) [#8788](https://github.com/ClickHouse/ClickHouse/issues/8788) [#8806](https://github.com/ClickHouse/ClickHouse/pull/8806) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) [#8803](https://github.com/ClickHouse/ClickHouse/pull/8803) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
|
||||
* Fix progress over native client-server protocol, by send progress after final update (like logs). This may be relevant only to some third-party tools that are using native protocol. [#9495](https://github.com/ClickHouse/ClickHouse/pull/9495) ([Azat Khuzhin](https://github.com/azat))
|
||||
* Add a system metric tracking the number of client connections using MySQL protocol ([#9013](https://github.com/ClickHouse/ClickHouse/issues/9013)). [#9015](https://github.com/ClickHouse/ClickHouse/pull/9015) ([Eugene Klimov](https://github.com/Slach))
|
||||
* From now on, HTTP responses will have `X-ClickHouse-Timezone` header set to the same timezone value that `SELECT timezone()` would report. [#9493](https://github.com/ClickHouse/ClickHouse/pull/9493) ([Denis Glazachev](https://github.com/traceon))
|
||||
|
||||
### Performance Improvement
|
||||
* Improve performance of analysing index with IN [#9261](https://github.com/ClickHouse/ClickHouse/pull/9261) ([Anton Popov](https://github.com/CurtizJ))
|
||||
* Simpler and more efficient code in Logical Functions + code cleanups. A followup to [#8718](https://github.com/ClickHouse/ClickHouse/issues/8718) [#8728](https://github.com/ClickHouse/ClickHouse/pull/8728) ([Alexander Kazakov](https://github.com/Akazz))
|
||||
* Overall performance improvement (in range of 5%..200% for affected queries) by ensuring even more strict aliasing with C++20 features. [#9304](https://github.com/ClickHouse/ClickHouse/pull/9304) ([Amos Bird](https://github.com/amosbird))
|
||||
* More strict aliasing for inner loops of comparison functions. [#9327](https://github.com/ClickHouse/ClickHouse/pull/9327) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* More strict aliasing for inner loops of arithmetic functions. [#9325](https://github.com/ClickHouse/ClickHouse/pull/9325) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* A ~3 times faster implementation for ColumnVector::replicate(), via which ColumnConst::convertToFullColumn() is implemented. Also will be useful in tests when materializing constants. [#9293](https://github.com/ClickHouse/ClickHouse/pull/9293) ([Alexander Kazakov](https://github.com/Akazz))
|
||||
* Another minor performance improvement to `ColumnVector::replicate()` (this speeds up the `materialize` function and higher order functions) an even further improvement to [#9293](https://github.com/ClickHouse/ClickHouse/issues/9293) [#9442](https://github.com/ClickHouse/ClickHouse/pull/9442) ([Alexander Kazakov](https://github.com/Akazz))
|
||||
* Improved performance of `stochasticLinearRegression` aggregate function. This patch is contributed by Intel. [#8652](https://github.com/ClickHouse/ClickHouse/pull/8652) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Improve performance of `reinterpretAsFixedString` function. [#9342](https://github.com/ClickHouse/ClickHouse/pull/9342) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Do not send blocks to client for `Null` format in processors pipeline. [#8797](https://github.com/ClickHouse/ClickHouse/pull/8797) ([Nikolai Kochetov](https://github.com/KochetovNicolai)) [#8767](https://github.com/ClickHouse/ClickHouse/pull/8767) ([Alexander Kuzmenkov](https://github.com/akuzm))
|
||||
|
||||
### Build/Testing/Packaging Improvement
|
||||
* Exception handling now works correctly on Windows Subsystem for Linux. See https://github.com/ClickHouse-Extras/libunwind/pull/3 This fixes [#6480](https://github.com/ClickHouse/ClickHouse/issues/6480) [#9564](https://github.com/ClickHouse/ClickHouse/pull/9564) [sobolevsv](https://github.com/sobolevsv))
|
||||
* Replace `readline` with `replxx` for interactive line editing in `clickhouse-client` [#8416](https://github.com/ClickHouse/ClickHouse/pull/8416) ([Ivan](https://github.com/abyss7))
|
||||
* Better build time and less template instantiations in FunctionsComparison. [#9324](https://github.com/ClickHouse/ClickHouse/pull/9324) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Added integration with `clang-tidy` in CI. See also [#6044](https://github.com/ClickHouse/ClickHouse/issues/6044) [#9566](https://github.com/ClickHouse/ClickHouse/pull/9566) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Now we link ClickHouse in CI using `lld` even for `gcc`. [#9049](https://github.com/ClickHouse/ClickHouse/pull/9049) ([alesapin](https://github.com/alesapin))
|
||||
* Allow to randomize thread scheduling and insert glitches when `THREAD_FUZZER_*` environment variables are set. This helps testing. [#9459](https://github.com/ClickHouse/ClickHouse/pull/9459) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Enable secure sockets in stateless tests [#9288](https://github.com/ClickHouse/ClickHouse/pull/9288) ([tavplubix](https://github.com/tavplubix))
|
||||
* Make SPLIT_SHARED_LIBRARIES=OFF more robust [#9156](https://github.com/ClickHouse/ClickHouse/pull/9156) ([Azat Khuzhin](https://github.com/azat))
|
||||
* Make "performance_introspection_and_logging" test reliable to random server stuck. This may happen in CI environment. See also [#9515](https://github.com/ClickHouse/ClickHouse/issues/9515) [#9528](https://github.com/ClickHouse/ClickHouse/pull/9528) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Validate XML in style check. [#9550](https://github.com/ClickHouse/ClickHouse/pull/9550) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Fixed race condition in test `00738_lock_for_inner_table`. This test relied on sleep. [#9555](https://github.com/ClickHouse/ClickHouse/pull/9555) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Remove performance tests of type `once`. This is needed to run all performance tests in statistical comparison mode (more reliable). [#9557](https://github.com/ClickHouse/ClickHouse/pull/9557) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Added performance test for arithmetic functions. [#9326](https://github.com/ClickHouse/ClickHouse/pull/9326) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Added performance test for `sumMap` and `sumMapWithOverflow` aggregate functions. Follow-up for [#8933](https://github.com/ClickHouse/ClickHouse/issues/8933) [#8947](https://github.com/ClickHouse/ClickHouse/pull/8947) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Ensure style of ErrorCodes by style check. [#9370](https://github.com/ClickHouse/ClickHouse/pull/9370) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Add script for tests history. [#8796](https://github.com/ClickHouse/ClickHouse/pull/8796) ([alesapin](https://github.com/alesapin))
|
||||
* Add GCC warning `-Wsuggest-override` to locate and fix all places where `override` keyword must be used. [#8760](https://github.com/ClickHouse/ClickHouse/pull/8760) ([kreuzerkrieg](https://github.com/kreuzerkrieg))
|
||||
* Ignore weak symbol under Mac OS X because it must be defined [#9538](https://github.com/ClickHouse/ClickHouse/pull/9538) ([Deleted user](https://github.com/ghost))
|
||||
* Normalize running time of some queries in performance tests. This is done in preparation to run all the performance tests in comparison mode. [#9565](https://github.com/ClickHouse/ClickHouse/pull/9565) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Fix some tests to support pytest with query tests [#9062](https://github.com/ClickHouse/ClickHouse/pull/9062) ([Ivan](https://github.com/abyss7))
|
||||
* Enable SSL in build with MSan, so server will not fail at startup when running stateless tests [#9531](https://github.com/ClickHouse/ClickHouse/pull/9531) ([tavplubix](https://github.com/tavplubix))
|
||||
* Fix database substitution in test results [#9384](https://github.com/ClickHouse/ClickHouse/pull/9384) ([Ilya Yatsishin](https://github.com/qoega))
|
||||
* Build fixes for miscellaneous platforms [#9381](https://github.com/ClickHouse/ClickHouse/pull/9381) ([proller](https://github.com/proller)) [#8755](https://github.com/ClickHouse/ClickHouse/pull/8755) ([proller](https://github.com/proller)) [#8631](https://github.com/ClickHouse/ClickHouse/pull/8631) ([proller](https://github.com/proller))
|
||||
* Added disks section to stateless-with-coverage test docker image [#9213](https://github.com/ClickHouse/ClickHouse/pull/9213) ([Pavel Kovalenko](https://github.com/Jokser))
|
||||
* Get rid of in-source-tree files when building with GRPC [#9588](https://github.com/ClickHouse/ClickHouse/pull/9588) ([Amos Bird](https://github.com/amosbird))
|
||||
* Slightly faster build time by removing SessionCleaner from Context. Make the code of SessionCleaner more simple. [#9232](https://github.com/ClickHouse/ClickHouse/pull/9232) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Updated checking for hung queries in clickhouse-test script [#8858](https://github.com/ClickHouse/ClickHouse/pull/8858) ([Alexander Kazakov](https://github.com/Akazz))
|
||||
* Removed some useless files from repository. [#8843](https://github.com/ClickHouse/ClickHouse/pull/8843) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Changed type of math perftests from `once` to `loop`. [#8783](https://github.com/ClickHouse/ClickHouse/pull/8783) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
|
||||
* Add docker image which allows to build interactive code browser HTML report for our codebase. [#8781](https://github.com/ClickHouse/ClickHouse/pull/8781) ([alesapin](https://github.com/alesapin)) See [Woboq Code Browser](https://clickhouse-test-reports.s3.yandex.net/codebrowser/html_report///ClickHouse/dbms/src/index.html)
|
||||
* Suppress some test failures under MSan. [#8780](https://github.com/ClickHouse/ClickHouse/pull/8780) ([Alexander Kuzmenkov](https://github.com/akuzm))
|
||||
* Speedup "exception while insert" test. This test often time out in debug-with-coverage build. [#8711](https://github.com/ClickHouse/ClickHouse/pull/8711) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Updated `libcxx` and `libcxxabi` to master. In preparation to [#9304](https://github.com/ClickHouse/ClickHouse/issues/9304) [#9308](https://github.com/ClickHouse/ClickHouse/pull/9308) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Fix flacky test `00910_zookeeper_test_alter_compression_codecs`. [#9525](https://github.com/ClickHouse/ClickHouse/pull/9525) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Clean up duplicated linker flags. Make sure the linker won't look up an unexpected symbol. [#9433](https://github.com/ClickHouse/ClickHouse/pull/9433) ([Amos Bird](https://github.com/amosbird))
|
||||
* Add `clickhouse-odbc` driver into test images. This allows to test interaction of ClickHouse with ClickHouse via its own ODBC driver. [#9348](https://github.com/ClickHouse/ClickHouse/pull/9348) ([filimonov](https://github.com/filimonov))
|
||||
* Fix several bugs in unit tests. [#9047](https://github.com/ClickHouse/ClickHouse/pull/9047) ([alesapin](https://github.com/alesapin))
|
||||
* Enable `-Wmissing-include-dirs` GCC warning to eliminate all non-existing includes - mostly as a result of CMake scripting errors [#8704](https://github.com/ClickHouse/ClickHouse/pull/8704) ([kreuzerkrieg](https://github.com/kreuzerkrieg))
|
||||
* Describe reasons if query profiler cannot work. This is intended for [#9049](https://github.com/ClickHouse/ClickHouse/issues/9049) [#9144](https://github.com/ClickHouse/ClickHouse/pull/9144) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Update OpenSSL to upstream master. Fixed the issue when TLS connections may fail with the message `OpenSSL SSL_read: error:14094438:SSL routines:ssl3_read_bytes:tlsv1 alert internal error` and `SSL Exception: error:2400006E:random number generator::error retrieving entropy`. The issue was present in version 20.1. [#8956](https://github.com/ClickHouse/ClickHouse/pull/8956) ([alexey-milovidov](https://github.com/alexey-milovidov))
|
||||
* Update Dockerfile for server [#8893](https://github.com/ClickHouse/ClickHouse/pull/8893) ([Ilya Mazaev](https://github.com/ne-ray))
|
||||
* Minor fixes in build-gcc-from-sources script [#8774](https://github.com/ClickHouse/ClickHouse/pull/8774) ([Michael Nacharov](https://github.com/mnach))
|
||||
* Replace `numbers` to `zeros` in perftests where `number` column is not used. This will lead to more clean test results. [#9600](https://github.com/ClickHouse/ClickHouse/pull/9600) ([Nikolai Kochetov](https://github.com/KochetovNicolai))
|
||||
* Fix stack overflow issue when using initializer_list in Column constructors. [#9367](https://github.com/ClickHouse/ClickHouse/pull/9367) ([Deleted user](https://github.com/ghost))
|
||||
* Upgrade librdkafka to v1.3.0. Enable bundled `rdkafka` and `gsasl` libraries on Mac OS X. [#9000](https://github.com/ClickHouse/ClickHouse/pull/9000) ([Andrew Onyshchuk](https://github.com/oandrew))
|
||||
* build fix on GCC 9.2.0 [#9306](https://github.com/ClickHouse/ClickHouse/pull/9306) ([vxider](https://github.com/Vxider))
|
||||
|
||||
|
||||
## ClickHouse release v20.1
|
||||
|
||||
### ClickHouse release v20.1.6.30, 2020-03-05
|
||||
|
||||
Loading…
Reference in New Issue
Block a user