mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-09 00:54:43 +00:00
47 lines
1.8 KiB
Markdown
47 lines
1.8 KiB
Markdown
# system.distribution_queue {#system_tables-distribution_queue}
|
|
|
|
Contains information about local files that are in the queue to be sent to the shards. These local files contain new parts that are created by inserting new data into the Distributed table in asynchronous mode.
|
|
|
|
Columns:
|
|
|
|
- `database` ([String](../../sql-reference/data-types/string.md)) — Name of the database.
|
|
|
|
- `table` ([String](../../sql-reference/data-types/string.md)) — Name of the table.
|
|
|
|
- `data_path` ([String](../../sql-reference/data-types/string.md)) — Path to the folder with local files.
|
|
|
|
- `is_blocked` ([UInt8](../../sql-reference/data-types/int-uint.md)) — Flag indicates whether sending local files to the server is blocked.
|
|
|
|
- `error_count` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Number of errors.
|
|
|
|
- `data_files` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Number of local files in a folder.
|
|
|
|
- `data_compressed_bytes` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Size of compressed data in local files, in bytes.
|
|
|
|
- `last_exception` ([String](../../sql-reference/data-types/string.md)) — Text message about the last error that occurred (if any).
|
|
|
|
**Example**
|
|
|
|
``` sql
|
|
SELECT * FROM system.distribution_queue LIMIT 1 FORMAT Vertical;
|
|
```
|
|
|
|
``` text
|
|
Row 1:
|
|
──────
|
|
database: default
|
|
table: dist
|
|
data_path: ./store/268/268bc070-3aad-4b1a-9cf2-4987580161af/default@127%2E0%2E0%2E2:9000/
|
|
is_blocked: 1
|
|
error_count: 0
|
|
data_files: 1
|
|
data_compressed_bytes: 499
|
|
last_exception:
|
|
```
|
|
|
|
**See Also**
|
|
|
|
- [Distributed table engine](../../engines/table-engines/special/distributed.md)
|
|
|
|
[Original article](https://clickhouse.tech/docs/en/operations/system_tables/distribution_queue) <!--hide-->
|