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https://issues.apache.org/jira/browse/TEZ-2209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14375217#comment-14375217
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Hadoop QA commented on TEZ-2209:
--------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12706417/TEZ-2209.4.patch
against master revision a44f5c5.
{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}. There were no new javadoc warning messages.
{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 .
Test results: https://builds.apache.org/job/PreCommit-TEZ-Build/326//testReport/
Console output: https://builds.apache.org/job/PreCommit-TEZ-Build/326//console
This message is automatically generated.
> Fix pipelined shuffle to fetch data from any one attempt
> --------------------------------------------------------
>
> Key: TEZ-2209
> URL: https://issues.apache.org/jira/browse/TEZ-2209
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Attachments: TEZ-2209.1.patch, TEZ-2209.2.patch, TEZ-2209.3.patch,
> TEZ-2209.4.patch
>
>
> - Currently, pipelined shuffle will fail-fast the moment it receives data
> from an attempt other than 0. This was done as an add-on check to prevent
> data being copied from speculated attempts.
> - However, in some scenarios (like LLAP), it could be possible that that task
> attempt gets killed even before generating any data. In such cases, attempt
> #1 or later attempts, would generate the actual data.
> - This jira is created to allow pipelined shuffle to download data from any
> one attempt.
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