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https://issues.apache.org/jira/browse/TEZ-3772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16060145#comment-16060145
]
TezQA commented on TEZ-3772:
----------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12874144/tez-3772.001.patch
against master revision 4a7719b.
{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:red}-1 javadoc{color}. The javadoc tool appears to have generated 2
warning messages.
See
https://builds.apache.org/job/PreCommit-TEZ-Build/2539//artifact/patchprocess/diffJavadocWarnings.txt
for details.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 3.0.1) 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 .
Test results:
https://builds.apache.org/job/PreCommit-TEZ-Build/2539//testReport/
Console output: https://builds.apache.org/job/PreCommit-TEZ-Build/2539//console
This message is automatically generated.
> Allow slowstart for small vertices to be treated differently
> ------------------------------------------------------------
>
> Key: TEZ-3772
> URL: https://issues.apache.org/jira/browse/TEZ-3772
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Muhammad Samir Khan
> Assignee: Muhammad Samir Khan
> Attachments: tez-3772.001.patch
>
>
> If there are a small number of reduces (configurable), then having a
> different threshold can benefit. Performance of jobs with a small number of
> reduce tasks can benefit significantly. Yes, the job could specify slowstart
> as 0.0 instead of the default, but that requires job owners to do something.
> It would be better if the defaults did something more optimal for both large
> and small jobs.
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