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https://issues.apache.org/jira/browse/FLINK-25580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yun Tang resolved FLINK-25580.
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Resolution: Fixed
Megred in master: b7fd63b41500dbfeadbf2ee48e1a83d77cd1259b
> Minor improvements for RocksDBIncrementalCheckpointUtils
> --------------------------------------------------------
>
> Key: FLINK-25580
> URL: https://issues.apache.org/jira/browse/FLINK-25580
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / State Backends
> Reporter: Aitozi
> Priority: Minor
> Labels: pull-request-available
>
> {{RocksDBIncrementalCheckpointUtils}} use
> {{intersectGroup.getNumberOfKeyGroups() * overlapFraction * overlapFraction}}
> to evaluate the score of the state handle. It's meaning is not so explicit.
> And the rule to choose the handle should be
> 1. Choose the bigger intersect group range first
> 2. If the intersect group range are same, we use the handle with higher
> overlap fraction, which means less iterator delete operation.
> After we introduce the {{deleteRange}} api, this rule can still work.
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