You are viewing a plain text version of this content. The canonical link for it is here.

Posted to hdfs-issues@hadoop.apache.org by "Arpit Agarwal (JIRA)" <ji...@apache.org> on 2014/03/12 02:55:43 UTC

[jira] [Commented] (HDFS-6093) Expose more caching information for debugging by users

    [ https://issues.apache.org/jira/browse/HDFS-6093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931265#comment-13931265 ] 

Arpit Agarwal commented on HDFS-6093:
-------------------------------------

+1 for the idea, thanks Andrew! :-)

I'll try to review this tomorrow if no one else has got to it by then.

> Expose more caching information for debugging by users
> ------------------------------------------------------
>
>                 Key: HDFS-6093
>                 URL: https://issues.apache.org/jira/browse/HDFS-6093
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: caching
>    Affects Versions: 2.4.0
>            Reporter: Andrew Wang
>            Assignee: Andrew Wang
>         Attachments: hdfs-6093-1.patch
>
>
> When users submit a new cache directive, it's unclear if the NN has recognized it and is actively trying to cache it, or if it's hung for some other reason. It'd be nice to expose a "pending caching/uncaching" count the same way we expose pending replication work.
> It'd also be nice to display the aggregate cache capacity and usage in dfsadmin -report, since we already have have it as a metric and expose it per-DN in report output.



--
This message was sent by Atlassian JIRA
(v6.2#6252)