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https://issues.apache.org/jira/browse/FLINK-16444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17054175#comment-17054175
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Steven Zhen Wu commented on FLINK-16444:
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+1. this is super useful if RocksDB / disk IO becomes bottleneck
> Count the read/write/seek/next latency of RocksDB as metrics
> ------------------------------------------------------------
>
> Key: FLINK-16444
> URL: https://issues.apache.org/jira/browse/FLINK-16444
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / State Backends
> Reporter: Yun Tang
> Priority: Major
> Fix For: 1.11.0
>
>
> Currently, user cannot know the read/write/seek/next latency of RocksDB, we
> could add these helpful metrics to know the overall state performance. To not
> affect the action performance much, we could introduce counter to only record
> the latency at interval of some actions.
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