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statistics: remove useless code in the MergePartTopN2GlobalTopN (#45755) #45769

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Merged
merged 1 commit into from
Aug 10, 2023
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statistics: remove useless code in the MergePartTopN2GlobalTopN (#45755) #45769

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9 changes: 1 addition & 8 deletions statistics/cmsketch.go
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Original file line number Diff line number Diff line change
Expand Up @@ -801,15 +801,8 @@ func MergePartTopN2GlobalTopN(loc *time.Location, version int, topNs []*TopN, n
}

partNum := len(topNs)
topNsNum := make([]int, partNum)
removeVals := make([][]TopNMeta, partNum)
for i, topN := range topNs {
if topN == nil {
topNsNum[i] = 0
continue
}
topNsNum[i] = len(topN.TopN)
}

// Different TopN structures may hold the same value, we have to merge them.
counter := make(map[hack.MutableString]float64)
// datumMap is used to store the mapping from the string type to datum type.
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