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https://issues.apache.org/jira/browse/HBASE-2862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12891224#action_12891224
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Nicolas Spiegelberg commented on HBASE-2862:
--------------------------------------------

I'd prefer some name prefix, whether it's 
HRS/RegionServer/HRegionServer/*whatever*.  It's nice to have a clearly-unique 
name per process for situations where we have multiple HDFS Clients per 
machine.  This is compounded by looking at HDFS logs during unit tests or 
psuedo-distributed testing.

> 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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