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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-24485) Measure and log elapsed time for filesystem operations in HDFSBackedStateStoreProvider
Date Thu, 07 Jun 2018 14:58:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-24485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16504776#comment-16504776
] 

Apache Spark commented on SPARK-24485:
--------------------------------------

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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