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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2010/07/22 06:31:49 UTC

[jira] Commented: (HBASE-2862) Name DFSClient for Improved Debugging

    [ https://issues.apache.org/jira/browse/HBASE-2862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12890999#action_12890999 ] 

stack commented on HBASE-2862:
------------------------------

This sounds great.  You know what issue it is N that has the patch we can rob from?

> 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
>
>
> 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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