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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2862) Name DFSClient for Improved Debugging
Date Thu, 22 Jul 2010 06:50:49 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Nicolas Spiegelberg updated HBASE-2862:

    Attachment: HBASE-2862.patch

This is the only patch needed.  Config option is (at the least) supported in 0.20+

> Name DFSClient for Improved Debugging
> -------------------------------------
>                 Key: HBASE-2862
>                 URL: https://issues.apache.org/jira/browse/HBASE-2862
>             Project: HBase
>          Issue Type: Improvement
>          Components: master, regionserver
>            Reporter: Nicolas Spiegelberg
>            Assignee: Nicolas Spiegelberg
>            Priority: Trivial
>             Fix For: 0.90.0
>         Attachments: HBASE-2862.patch
> Reported by Hairong.  We had an HDFS error on our test cluster.  It was hard to debug
the HDFS NameNode logs because there was no way to map DFClient => RegionServer.  Hadoop
guys added a hacky config value, "mapred.task.id", which allows you to add a suffix to the
DFSClient ID for logging.  We should piggyback upon that for our HLog/HFile code 

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