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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5274) Add Tracing to HDFS
Date Fri, 07 Mar 2014 23:34:43 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13924490#comment-13924490

Hadoop QA commented on HDFS-5274:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/6349//console

This message is automatically generated.

> Add Tracing to HDFS
> -------------------
>                 Key: HDFS-5274
>                 URL: https://issues.apache.org/jira/browse/HDFS-5274
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode, namenode
>    Affects Versions: 2.1.1-beta
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>         Attachments: 3node_get_200mb.png, 3node_put_200mb.png, HDFS-5274-0.patch, HDFS-5274-1.patch,
HDFS-5274-10.patch, HDFS-5274-11.txt, HDFS-5274-12.patch, HDFS-5274-13.patch, HDFS-5274-2.patch,
HDFS-5274-3.patch, HDFS-5274-4.patch, HDFS-5274-5.patch, HDFS-5274-6.patch, HDFS-5274-7.patch,
HDFS-5274-8.patch, HDFS-5274-8.patch, HDFS-5274-9.patch, Zipkin   Trace a06e941b0172ec73.png,
Zipkin   Trace d0f0d66b8a258a69.png, ss-5274v8-get.png, ss-5274v8-put.png
> Since Google's Dapper paper has shown the benefits of tracing for a large distributed
system, it seems like a good time to add tracing to HDFS.  HBase has added tracing using HTrace.
 I propose that the same can be done within HDFS.

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