Note:
This topic has been translated from a Chinese forum by GPT and might contain errors.
Original topic: Region的大小存在不一致的描述
Documentation Error: Please provide feedback using the template below
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Issue Category: Description Error
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Affected Page: [Link + Screenshot]
(TiDB 数据库的存储 | PingCAP 文档中心)
TiKV 简介 | PingCAP 文档中心
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Error Description: The descriptions of Region in the two articles are inconsistent. One states that it splits when exceeding 144MB, while the other states it splits when exceeding 96MB. Which one is correct?
The issue has been reported~ We will update you with specific progress as soon as possible~
I was so scared that I quickly searched the documentation.
TiKV region-max-size modification default value from 144 MB
My understanding is that when a Region exceeds 96M, another one will be allocated, but at this time the startkey and endkey of this region are already fixed. Data within this range will continue to increase, and when it exceeds 144M, it will split.
The first description here is actually not wrong. What he wants to say is that the default size of the Region is 96M, not the split size.
Simply put: greater than 96MB, a new one is allocated; greater than 144MB, one becomes two.
Default Region size region-split-size: 96MB,
Default split size region-max-size: 144MB, region-split-size / 2 * 3.
Your understanding is correct~
The documentation is actually not wrong, but it might be a bit difficult to understand when compared,
So I have already submitted tikv: updated description about region size by hfxsd · Pull Request #12168 · pingcap/docs-cn · GitHub
The PR has been optimized to minimize the obstacles for everyone reading the documentation~
Thank you, Coffee Brother, for answering the questions.
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