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29 lines
4.3 KiB
Markdown
29 lines
4.3 KiB
Markdown
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---
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sidebar_position: 1
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sidebar_label: 2022
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---
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# 2022 Changelog
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### ClickHouse release v22.10.4.23-stable (352772987f4) FIXME as compared to v22.10.3.27-stable (6d3b2985724)
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#### Backward Incompatible Change
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* Backported in [#43487](https://github.com/ClickHouse/ClickHouse/issues/43487): Fixed backward incompatibility in (de)serialization of states of `min`, `max`, `any*`, `argMin`, `argMax` aggregate functions with `String` argument. The incompatibility was introduced in https://github.com/ClickHouse/ClickHouse/pull/41431 and affects 22.9, 22.10 and 22.11 branches (fixed since 22.9.6, 22.10.4 and 22.11.2 correspondingly). Some minor releases of 22.3, 22.7 and 22.8 branches are also affected: 22.3.13...22.3.14 (fixed since 22.3.15), 22.8.6...22.8.9 (fixed since 22.8.10), 22.7.6 and newer (will not be fixed in 22.7, we recommend to upgrade from 22.7.* to 22.8.10 or newer). This release note does not concern users that have never used affected versions. Incompatible versions append extra `'\0'` to strings when reading states of the aggregate functions mentioned above. For example, if an older version saved state of `anyState('foobar')` to `state_column` then incompatible version will print `'foobar\0'` on `anyMerge(state_column)`. Also incompatible versions write states of the aggregate functions without trailing `'\0'`. Newer versions (that have the fix) can correctly read data written by all versions including incompatible versions, except one corner case. If an incompatible version saved a state with a string that actually ends with null character, then newer version will trim trailing `'\0'` when reading state of affected aggregate function. For example, if an incompatible version saved state of `anyState('abrac\0dabra\0')` to `state_column` then incompatible versions will print `'abrac\0dabra'` on `anyMerge(state_column)`. The issue also affects distributed queries when an incompatible version works in a cluster together with older or newer versions. [#43038](https://github.com/ClickHouse/ClickHouse/pull/43038) ([Raúl Marín](https://github.com/Algunenano)).
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#### Build/Testing/Packaging Improvement
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* Backported in [#43053](https://github.com/ClickHouse/ClickHouse/issues/43053): Wait for all files are in sync before archiving them in integration tests. [#42891](https://github.com/ClickHouse/ClickHouse/pull/42891) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
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#### Bug Fix (user-visible misbehavior in official stable or prestable release)
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* Backported in [#43715](https://github.com/ClickHouse/ClickHouse/issues/43715): An issue with the following exception has been reported while trying to read a Parquet file from S3 into ClickHouse:. [#43297](https://github.com/ClickHouse/ClickHouse/pull/43297) ([Arthur Passos](https://github.com/arthurpassos)).
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* Backported in [#43576](https://github.com/ClickHouse/ClickHouse/issues/43576): Fix possible `Cannot create non-empty column with type Nothing` in functions if/multiIf. Closes [#43356](https://github.com/ClickHouse/ClickHouse/issues/43356). [#43368](https://github.com/ClickHouse/ClickHouse/pull/43368) ([Kruglov Pavel](https://github.com/Avogar)).
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* Backported in [#43506](https://github.com/ClickHouse/ClickHouse/issues/43506): Fix a bug when row level filter uses default value of column. [#43387](https://github.com/ClickHouse/ClickHouse/pull/43387) ([Alexander Gololobov](https://github.com/davenger)).
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* Backported in [#43723](https://github.com/ClickHouse/ClickHouse/issues/43723): Fixed primary key analysis with conditions involving `toString(enum)`. [#43596](https://github.com/ClickHouse/ClickHouse/pull/43596) ([Nikita Taranov](https://github.com/nickitat)).
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#### NOT FOR CHANGELOG / INSIGNIFICANT
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* Temporarily disable `test_hive_query` [#43542](https://github.com/ClickHouse/ClickHouse/pull/43542) ([Alexander Tokmakov](https://github.com/tavplubix)).
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* Do not checkout submodules recursively [#43637](https://github.com/ClickHouse/ClickHouse/pull/43637) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
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* Use docker images cache from merged PRs in master and release branches [#43664](https://github.com/ClickHouse/ClickHouse/pull/43664) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
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* Fix pagination issue in GITHUB_JOB_ID() [#43681](https://github.com/ClickHouse/ClickHouse/pull/43681) ([Mikhail f. Shiryaev](https://github.com/Felixoid)).
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