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reference/configuration: add description about TiDB txn-total-size-limit #2002

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Apr 7, 2020
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reference/configuration: add description about TiDB txn-total-size-limit #2002

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reference/configuration: add description about TiDB txn-total-size-limit
tiancaiamao Mar 13, 2020
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Update reference/configuration/tidb-server/configuration-file.md
tiancaiamao Apr 1, 2020
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Merge branch 'master' into txn-total-size
jackysp Apr 7, 2020
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6 changes: 6 additions & 0 deletions reference/configuration/tidb-server/configuration-file.md
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Expand Up @@ -255,6 +255,12 @@ Configuration items related to performance.
- Default value: `5000`
- If a transaction does not roll back or commit after the number of statements exceeds `stmt-count-limit`, TiDB returns the `statement count 5001 exceeds the transaction limitation, autocommit = false` error. This configuration takes effect **only** in the retriable optimistic transaction. If you use the pessimistic transaction or have disabled the transaction retry, the number of statements in a transaction is not limited by this configuration.

### `txn-total-size-limit`

- The size limit of a transaction.
- Default value: `104857600`
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@TomShawn TomShawn Mar 13, 2020 •
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What about adding a unit?

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@tiancaiamao tiancaiamao Apr 1, 2020

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In the description, it says "size in bytes" @TomShawn

- The total size of all key-value entries in bytes should be less than this value. Note that if the `binlog` is enabled, this value should be less than `104857600` (which means 100MB), because of the limitation of the binlog component. If `binlog` is not enabled, the maximum value of this configuration is `10737418240` (which means 10GB).

### `tcp-keep-alive`

- Determines whether to enable `keepalive` in the TCP layer.
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