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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5873) Measure bw of a single copy call and display the correct aggregated bw
Date Wed, 08 Oct 2014 20:32:35 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14164110#comment-14164110
] 

Hadoop QA commented on MAPREDUCE-5873:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12673678/MAPREDUCE-5873.v6.patch
  against trunk revision e16e25a.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 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
2.0.3) 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-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4942//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4942//console

This message is automatically generated.

> Measure bw of a single copy call and display the correct aggregated bw
> ----------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5873
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5873
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 2.3.0
>            Reporter: Siqi Li
>            Assignee: Siqi Li
>         Attachments: MAPREDUCE-5873.v1.patch, MAPREDUCE-5873.v2.patch, MAPREDUCE-5873.v3.patch,
MAPREDUCE-5873.v4.patch, MAPREDUCE-5873.v5.patch, MAPREDUCE-5873.v6.patch
>
>
> Currently ShuffleScheduler in ReduceTask JVM status displays bandwidth. Its definition
however is confusing because it captures the time where there is no copying because there
is a pause between when new wave of map outputs is available.
> current bw is definded as (bytes copied so far) / (total time in the copy phase so far)
> It would be more useful 
> 1) to measure bandwidth of a single copy call.
> 2) display aggregated bw as long as there is at least one fetcher is in the copy call.



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