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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6956) Allow dynamically changing the tracing level in Hadoop servers
Date Mon, 22 Sep 2014 20:49:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14143791#comment-14143791
] 

Allen Wittenauer commented on HDFS-6956:
----------------------------------------

trace should be sorted in the case statement and in the usage output.



> Allow dynamically changing the tracing level in Hadoop servers
> --------------------------------------------------------------
>
>                 Key: HDFS-6956
>                 URL: https://issues.apache.org/jira/browse/HDFS-6956
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-6956.002.patch, HDFS-6956.003.patch
>
>
> We should allow users to dynamically change the tracing level in Hadoop servers.  The
easiest way to do this is probably to have an RPC accessible only to the superuser that changes
tracing settings.  This would allow us to turn on and off tracing on the NameNode, DataNode,
etc. at runtime.



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