The cluster has a large number of balance regions

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 集群存在大量balance region

| username: TiDBer_KkruFifg

[TiDB Usage Environment] Production Environment / Test / Poc
Production Environment

[TiDB Version]
5.0.4

[Encountered Problem]
From the PD monitoring, it can be seen that the cluster has a large number of balance region operations, leading to an increase in cluster duration.
Generally speaking, the actions that cause balance region may include the following points:

  1. Hotspot writing
  2. Scaling up or down
  3. Improper configuration

Through analysis and inspection, the above points are not the issue. What other reasons could lead to a large number of balance region operations?

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[Reproduction Path] What operations were performed when the problem occurred
[Problem Phenomenon and Impact]

[Attachments]

Please provide the version information of each component, such as cdc/tikv, which can be obtained by executing cdc version/tikv-server --version.

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| username: xfworld | Original post link

The image cannot be translated directly. Please provide the text content for translation.

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| username: TiDBer_KkruFifg | Original post link

Actually, there is no write hotspot in the cluster. The version mentioned was incorrect; the correct version is 4.0.8.

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image1380×828 250 KB

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| username: TiDBer_KkruFifg | Original post link

The image link you provided appears to be broken or inaccessible. Please provide the text you need translated.

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| username: xfworld | Original post link

If regions are unbalanced, it will lead to unbalanced loads as well. It is recommended to check these metrics.

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| username: system | Original post link

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