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From "Giovanni Matteo Fumarola (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13347) RBF: Cache datanode reports
Date Tue, 27 Mar 2018 20:17:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16416173#comment-16416173
] 

Giovanni Matteo Fumarola commented on HDFS-13347:
-------------------------------------------------

Thanks [~elgoiri] for the path.

Few comments:
*RouterRpcServer*
Why did you change to false?

*NamenodeBeanMetrics*
TIME_OUT should be configurable.


> 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, HDFS-13347.002.patch,
HDFS-13347.003.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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