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https://issues.apache.org/jira/browse/FLINK-21736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yun Tang resolved FLINK-21736.
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Resolution: Fixed
> Introduce latency tracking state
> --------------------------------
>
> Key: FLINK-21736
> URL: https://issues.apache.org/jira/browse/FLINK-21736
> Project: Flink
> Issue Type: New Feature
> Components: Runtime / State Backends
> Reporter: Yun Tang
> Assignee: Yun Tang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> This ticket is extended from FLINK-16444 which wants to track latency of
> RocksDB options. However previous ticket has two problems:
> # Cannot apply to heap based state backend and other user customized state
> backend.
> # User need background knowledge to know what RocksDB operation
> corresponding to what state operation, e.g RocksDB adopts {{merge}} to act as
> listState#add.
> Thus, I prefer to introduce latency tracking state wrapper to detect the
> access latency. And to not impact the original state access, I would still
> use sample interval as previous FLINK-16444 did.
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