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Merge pull request #53527 from ClickHouse/qoega-patch-5

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Ilya Yatsishin 2023-08-17 18:26:42 +02:00 committed by GitHub
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docs/en/operations/settings/merge-tree-settings.md
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@ -56,11 +56,11 @@ Possible values:
- Any positive integer.
Default value: 300.
Default value: 3000.
To achieve maximum performance of `SELECT` queries, it is necessary to minimize the number of parts processed, see [Merge Tree](../../development/architecture.md#merge-tree).
You can set a larger value to 600 (1200), this will reduce the probability of the `Too many parts` error, but at the same time `SELECT` performance might degrade. Also in case of a merge issue (for example, due to insufficient disk space) you will notice it later than it could be with the original 300.
Prior to 23.6 this setting was set to 300. You can set a higher different value, it will reduce the probability of the `Too many parts` error, but at the same time `SELECT` performance might degrade. Also in case of a merge issue (for example, due to insufficient disk space) you will notice it later than it could be with the original 300.
## parts_to_delay_insert {#parts-to-delay-insert}