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https://issues.apache.org/jira/browse/HDFS-8439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14552970#comment-14552970
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stack commented on HDFS-8439:
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s/cost/duration/g I could also do on commit. I like how you log the culprit or
pipeline. Are you running this in production [~liushaohui]?
> Adding more slow action log in critical read path
> -------------------------------------------------
>
> Key: HDFS-8439
> URL: https://issues.apache.org/jira/browse/HDFS-8439
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Liu Shaohui
> Assignee: Liu Shaohui
> Priority: Minor
> Attachments: HDFS-8439.001.patch
>
>
> To dig a HBase read spike issue, we'd better to add more slow pread/seek log
> in read flow to get the abnormal datanodes.
> Patch will be uploaded soon.
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