store/tikv: limit batch split count for one request (#18191) #18694
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Signed-off-by: ti-srebot <ti-srebot@pingcap.com>
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/run-all-tests |
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type/enhancement
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@Connor1996 please accept the invitation then you can push to the cherry-pick pull requests. |
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/test |
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LGTM |
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/merge |
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Sorry @XuHuaiyu, you don't have permission to trigger auto merge event on this branch. |
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/merge |
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/run-all-tests |
crazycs520
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Jul 24, 2020
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cherry-pick #18191 to release-3.0
Signed-off-by: Connor1996 zbk602423539@gmail.com
What problem does this PR solve?
Too much split may cause TiKV latency spike.
What is changed and how it works?
For one batch split request, TiKV will write all newly created regions' metadata into one write batch of RocksDB. So limit the batch split for one request and separate it into multiple requests.
Related changes
Check List
Release note