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reference: add a new config in tidb-server config doc (#2287) #2363

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Apr 21, 2020
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reference: add a new config in tidb-server config doc (#2287) #2363

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8 changes: 8 additions & 0 deletions reference/configuration/tidb-server/configuration-file.md
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Expand Up @@ -34,6 +34,14 @@ The TiDB configuration file supports more options than command-line parameters.
+ Default value: `<TMPDIR>/tidb/tmp-storage`
+ It only takes effect when `oom-use-tmp-storage` is `true`.

### `tmp-storage-quota`

+ Specifies the quota for the storage in `tmp-storage-path`. The unit is byte.
+ When a single SQL statement uses a temporary disk and the total volume of the temporary disk of the TiDB server exceeds this configuration value, the current SQL operation is cancelled and the `Out of Global Storage Quota!` error is returned.
+ When the value of this configuration is smaller than `0`, the above check and limit do not apply.
+ Default value: `-1`
+ When the remaining available storage in `tmp-storage-path` is lower than the value defined by `tmp-storage-quota`, the TiDB server reports an error when it is started, and exits.

### `oom-action`

- Specifies what operation TiDB performs when a single SQL statement exceeds the memory quota specified by `mem-quota-query` and cannot be spilled over to disk.
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