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https://issues.apache.org/jira/browse/TEZ-3440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15546709#comment-15546709
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TezQA commented on TEZ-3440:
----------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12831604/TEZ-3440-v1.patch
against master revision ad1fb62.
{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/2012//testReport/
Console output: https://builds.apache.org/job/PreCommit-TEZ-Build/2012//console
This message is automatically generated.
> Shuffling to memory can get out-of-sync when fetching multiple compressed map
> outputs
> -------------------------------------------------------------------------------------
>
> Key: TEZ-3440
> URL: https://issues.apache.org/jira/browse/TEZ-3440
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Nathan Roberts
> Assignee: Nathan Roberts
> Attachments: TEZ-3440-v1.patch, TEZ-3440.patch
>
>
> Haven't verified yet but certainly looks like tez needs same fix as
> MAPREDUCE-5308 in IFile.
> Specifically saw this because downstream tasks were reporting enough fetch
> failures that long-running upstream tasks had to be re-run, which makes job
> run for much longer than it needs.
> Usually shows itself as an "Invalid map id" error on a multi-map fetch on
> part 2-n (i.e. never the first one).
>
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