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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12502) nntop should support a category based on FilesInGetListingOps
Date Thu, 19 Oct 2017 07:25:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhe Zhang updated HDFS-12502:
-----------------------------
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 3.1.0
                   3.0.0
                   2.7.5
                   2.8.3
                   2.9.0
           Status: Resolved  (was: Patch Available)

Thanks for the review [~shv]. I just committed the patch to trunk~branch-2.7.

> nntop should support a category based on FilesInGetListingOps
> -------------------------------------------------------------
>
>                 Key: HDFS-12502
>                 URL: https://issues.apache.org/jira/browse/HDFS-12502
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: metrics
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>             Fix For: 2.9.0, 2.8.3, 2.7.5, 3.0.0, 3.1.0
>
>         Attachments: HDFS-12502.00.patch, HDFS-12502.01.patch, HDFS-12502.02.patch, HDFS-12502.03.patch,
HDFS-12502.04.patch
>
>
> Large listing ops can oftentimes be the main contributor to NameNode slowness. The aggregate
cost of listing ops is proportional to the {{FilesInGetListingOps}} rather than the number
of listing ops. Therefore it'd be very useful for nntop to support this category.



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