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https://issues.apache.org/jira/browse/HDFS-5274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13955093#comment-13955093
]
Hadoop QA commented on HDFS-5274:
---------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12637769/HDFS-5274-14.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 4 new
or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. There were no new javadoc warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with
eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in
hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/6560//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/6560//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,
> 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-5274-14.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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