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two-data-centers-in-one-city-deployment.md: fix some typos #6886

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Aug 20, 2021
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two-data-centers-in-one-city-deployment.md: fix some typos #6886

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two-data-centers-in-one-city-deployment.md: fix some typos
Aug 17, 2021
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fix CI
Aug 18, 2021
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Merge remote-tracking branch 'upstream/master' into update-dr
Aug 18, 2021
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fix CI
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Xiaozhen Liu committed Aug 18, 2021
commit c9bb2d91ad1fb5ec883376693f0056f8c5c454c8
2 changes: 1 addition & 1 deletion sql-plan-management.md
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Expand Up @@ -322,7 +322,7 @@ create global binding for select * from t where a < 100 and b < 100 using select

## 升级检查 (Upgrade Checklist)

执行计划管理功能（SPM）在版本升级过程中可能会出现一些兼容性问题导致升级失败，你需要在版本升级前做一些检查，确保版本顺利升级。
执行计划管理功能 (SPM) 在版本升级过程中可能会出现一些兼容性问题导致升级失败，你需要在版本升级前做一些检查，确保版本顺利升级。

* 当你尝试从 v5.2 以前的版本（即 v4.0、v5.0、v5.1）升级到当前版本，需要注意在升级前检查自动演进的开关 `tidb_evolve_plan_baselines` 是否已经关闭。如果尚未关闭，则需要将其关闭后再进行升级。具体操作如下所示：

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