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tidb: add description for var tidb_ddl_reorg_max_write_speed (#19445) #19644

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tidb: add description for var tidb_ddl_reorg_max_write_speed (#19445) #19644

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tidb: add description for var tidb_ddl_reorg_max_write_speed
CbcWestwolf Nov 18, 2024
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CbcWestwolf Nov 18, 2024
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Update system-variables.md
CbcWestwolf Nov 19, 2024
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CbcWestwolf Nov 19, 2024
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Update system-variables.md
qiancai Nov 26, 2024
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qiancai Nov 26, 2024
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@CbcWestwolf @ti-chi-bot
CbcWestwolf authored and ti-chi-bot committed Dec 10, 2024
commit 3319d90e67995aff97a8482916bbefd7ee110062
2 changes: 1 addition & 1 deletion system-variables.md
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Expand Up @@ -1202,7 +1202,7 @@ MPP is a distributed computing framework provided by the TiFlash engine, which a
- Type: Integer
- Default value: `0`
- Range: `[0, 1125899906842624]` (the maximum value that can be set is 1 PiB)
- This variable limits the write bandwidth for each TiKV node and only takes effect when index creation acceleration is enabled (controlled by the [`tidb_ddl_enable_fast_reorg`](#tidb_ddl_enable_fast_reorg-new-in-v630) variable). When the data size in the cluster is quite large, limiting the write bandwidth for index creation can reduce the impact of the frontend workload.
- This variable limits the write bandwidth for each TiKV node and only takes effect when index creation acceleration is enabled (controlled by the [`tidb_ddl_enable_fast_reorg`](#tidb_ddl_enable_fast_reorg-new-in-v630) variable). When the data size in the cluster is quite large, limiting the write bandwidth for index creation can reduce the impact on the frontend workload.
- The default value `0` means no write bandwidth limit. The default unit is bytes per second. You can also set the value in formats such as `'1GiB'` or `'256MiB`.

### tidb_ddl_reorg_worker_cnt
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