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https://issues.apache.org/jira/browse/TEZ-3452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15553495#comment-15553495
]
TezQA commented on TEZ-3452:
----------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12832042/TEZ-3452.3.patch
against master revision 149db1b.
{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 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/2022//testReport/
Console output: https://builds.apache.org/job/PreCommit-TEZ-Build/2022//console
This message is automatically generated.
> Auto-reduce parallelism calculation can overflow with large inputs
> ------------------------------------------------------------------
>
> Key: TEZ-3452
> URL: https://issues.apache.org/jira/browse/TEZ-3452
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Jonathan Eagles
> Assignee: Jonathan Eagles
> Attachments: TEZ-3452.1.patch, TEZ-3452.2.patch, TEZ-3452.3.patch
>
>
> Overflow can occur when the numTasks is high (say 45000) and outputSize is
> high (say 311TB) and slow start is set to 1.0.
> {code:title=ShuffleVertexManager}
> for (Map.Entry<String, SourceVertexInfo> vInfo : getBipartiteInfo()) {
> SourceVertexInfo srcInfo = vInfo.getValue();
> if (srcInfo.numTasks > 0 && srcInfo.numVMEventsReceived > 0) {
> // this assumes that 1 vmEvent is received per completed task -
> TEZ-2961
> expectedTotalSourceTasksOutputSize +=
> (srcInfo.numTasks * srcInfo.outputSize) /
> srcInfo.numVMEventsReceived;
> }
> }
> {code}
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