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reference: update v2.1 auto-retry description #2111

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Feb 21, 2020
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reference: update v2.1 auto-retry description #2111

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reference: update v2.1 auto-retry description
TomShawn Dec 10, 2019
476b972
reference: refine language
TomShawn Dec 11, 2019
5dbfe94
Merge branch 'master' into correct-transaction-doc
TomShawn Dec 24, 2019
2ca1668
Merge branch 'master' into correct-transaction-doc
lilin90 Feb 21, 2020
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4 changes: 2 additions & 2 deletions v2.1/reference/configuration/tidb-server/tidb-specific-variables.md
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Expand Up @@ -289,9 +289,9 @@ set @@global.tidb_distsql_scan_concurrency = 10

作用域：SESSION | GLOBAL

默认值：on
默认值：off

这个变量用来设置是否禁用显式事务自动重试，设置为 `on` 时，不会自动重试，如果遇到事务冲突需要在应用层重试。
这个变量用来设置是否禁用显式事务自动重试，设置为 `on` 时，不会自动重试，如果遇到事务冲突需要在应用层重试。TiDB v2.1 默认开启自动重试。

如果将该变量的值设为 `off`，TiDB 将会自动重试事务，这样在事务提交时遇到的错误更少。需要注意的是，这样可能会导致数据更新丢失。

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