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Date: Wed, 29 Apr 2015 02:20:06 +0000 (UTC)
From: "Masatake Iwasaki (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-8213) DFSClient should use
 hdfs.client.htrace HTrace configuration prefix rather than hadoop.htrace
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    [ https://issues.apache.org/jira/browse/HDFS-8213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14518598#comment-14518598 ] 

Masatake Iwasaki commented on HDFS-8213:
----------------------------------------

Thanks for the update, [~cmccabe]. I'm +1(non-binding) for 002.

bq. Let's do the hdfs-default.xml and other docs stuff later since it's not directly related to this

Yeah. I filed HDFS-8284.


> DFSClient should use hdfs.client.htrace HTrace configuration prefix rather than hadoop.htrace
> ---------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8213
>                 URL: https://issues.apache.org/jira/browse/HDFS-8213
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Billie Rinaldi
>            Assignee: Colin Patrick McCabe
>            Priority: Critical
>         Attachments: HDFS-8213.001.patch, HDFS-8213.002.patch
>
>
> DFSClient initializing SpanReceivers is a problem for Accumulo, which manages SpanReceivers through its own configuration.  This results in the same receivers being registered multiple times and spans being delivered more than once.  The documentation says SpanReceiverHost.getInstance should be issued once per process, so there is no expectation that DFSClient should do this.


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