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store/tikv: limit batch split count for one request #18191

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merged 4 commits into from
Jul 21, 2020
Merged

store/tikv: limit batch split count for one request #18191

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b924648
limit batch split size for one request
Connor1996 Jun 23, 2020
a064616
Merge branch 'master' into split-limit
zimulala Jun 24, 2020
3df986d
Merge branch 'master' into split-limit
ti-srebot Jun 24, 2020
9bee195
Merge branch 'master' into split-limit
zz-jason Jul 21, 2020
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4 changes: 3 additions & 1 deletion store/tikv/split_region.go
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,8 @@ import (
"go.uber.org/zap"
)

const splitBatchRegionLimit = 16

func equalRegionStartKey(key, regionStartKey []byte) bool {
return bytes.Equal(key, regionStartKey)
}
Expand All @@ -45,7 +47,7 @@ func (s *tikvStore) splitBatchRegionsReq(bo *Backoffer, keys [][]byte, scatter b

var batches []batch
for regionID, groupKeys := range groups {
batches = appendKeyBatches(batches, regionID, groupKeys, rawBatchPutSize)
batches = appendKeyBatches(batches, regionID, groupKeys, splitBatchRegionLimit)
}

if len(batches) == 0 {
Expand Down