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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4698) provide client-side metrics for remote reads, local reads, and short-circuit reads
Date Thu, 09 May 2013 03:45:16 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652713#comment-13652713
] 

Hadoop QA commented on HDFS-4698:
---------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12582413/HDFS-4698.005.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 2 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}.  The javadoc tool did not generate any 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-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/4368//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/4368//console

This message is automatically generated.
                
> provide client-side metrics for remote reads, local reads, and short-circuit reads
> ----------------------------------------------------------------------------------
>
>                 Key: HDFS-4698
>                 URL: https://issues.apache.org/jira/browse/HDFS-4698
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs-client
>    Affects Versions: 2.0.4-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>         Attachments: HDFS-4698.001.patch, HDFS-4698.002.patch, HDFS-4698.003.patch, HDFS-4698.004.patch,
HDFS-4698.005.patch
>
>
> We should provide metrics to let clients know how many bytes of data they have read remotely,
versus locally or via short-circuit local reads.  This will allow clients to know how well
they're doing at bringing the computation to the data, which will be useful in evaluating
placement policies and cluster configurations.

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