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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5451) add more debugging for cache rescan
Date Wed, 20 Nov 2013 21:28:35 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13828145#comment-13828145
] 

Andrew Wang commented on HDFS-5451:
-----------------------------------

+1 thanks Colin, will commit shortly. I like {{DirectiveStats}} more than the additional PBCD
fields, so maybe we can do that after the big rename.

> add more debugging for cache rescan
> -----------------------------------
>
>                 Key: HDFS-5451
>                 URL: https://issues.apache.org/jira/browse/HDFS-5451
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>    Affects Versions: 3.0.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-5451.001.patch, HDFS-5451.002.patch, HDFS-5451.003.patch, HDFS-5451.004.patch
>
>
> It would be nice to have message at DEBUG level that described all the decisions we made
for cache entries.  That way we could turn on this debugging to get more information.  We
should also store the number of bytes each PBCE wanted, and the number of bytes it got, plus
the number of inodes it got, and output those in {{listDirectives}}.



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