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add distinct-agg-push-down in tidb config file (#3259) #3266

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merged 3 commits into from
Jul 14, 2020
Merged

add distinct-agg-push-down in tidb config file (#3259) #3266

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fa5eabf
cherry pick #3259 to release-4.0
ran-huang Jul 14, 2020
42dd463
resolve conflict
ran-huang Jul 14, 2020
6fc7f8e
resolve conflict
ran-huang Jul 14, 2020
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resolve conflict
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@ran-huang
ran-huang authored Jul 14, 2020
commit 6fc7f8e453261dc23daa27da6163a9ab6201e66b
3 changes: 0 additions & 3 deletions tidb-configuration-file.md
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Expand Up @@ -355,8 +355,6 @@ Configuration items related to performance.
- Default: `NO_PRIORITY`
- Optional values: `NO_PRIORITY`, `LOW_PRIORITY`, `HIGH_PRIORITY` and `DELAYED`.

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### `distinct-agg-push-down`

- Determines whether the optimizer executes the operation that pushes down the aggregation function with `Distinct` (such as `select count(distinct a) from t`) to Coprocessors.
Expand All @@ -369,7 +367,6 @@ Configuration items related to performance.
+ Default value: `20971520`
+ When `nested-loop-join-cache-capacity` is set to `0`, nested loop join cache is disabled by default. When the LRU size is larger than the value of `nested-loop-join-cache-capacity`, the elements in the LRU are removed.

>>>>>>> b799472... add distinct-agg-push-down in tidb config file (#3259)
## prepared-plan-cache

The Plan Cache configuration of the `PREPARE` statement.
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