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https://issues.apache.org/jira/browse/SPARK-24485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16504776#comment-16504776
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Apache Spark commented on SPARK-24485:
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User 'HeartSaVioR' has created a pull request for this issue:
https://github.com/apache/spark/pull/21506
> Measure and log elapsed time for filesystem operations in
> HDFSBackedStateStoreProvider
> --------------------------------------------------------------------------------------
>
> Key: SPARK-24485
> URL: https://issues.apache.org/jira/browse/SPARK-24485
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 2.4.0
> Reporter: Jungtaek Lim
> Priority: Minor
>
> There're couple of operations which communicate with file system (mostly
> remote HDFS in production) in HDFSBackedStateStoreProvider, which contribute
> huge part of latency.
> It would be better to measure the latency (elapsed time) and log to help
> debugging when there's unexpected huge latency on state store.
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