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