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https://issues.apache.org/jira/browse/HDFS-13347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16414283#comment-16414283
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Rushabh S Shah commented on HDFS-13347:
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{quote}In our particular, we are setting this to 10 seconds
{quote}
I read it as 10 minutes. My bad.
Thanks for the update.
> RBF: Cache datanode reports
> ---------------------------
>
> Key: HDFS-13347
> URL: https://issues.apache.org/jira/browse/HDFS-13347
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Íñigo Goiri
> Assignee: Íñigo Goiri
> Priority: Minor
> Attachments: HDFS-13347.000.patch, HDFS-13347.001.patch
>
>
> Getting the datanode reports is an expensive operation and can be executed
> very frequently by the UI and watchdogs. We should cache this information.
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