TezQA commented on TEZ-3816:

{color:red}-1 overall{color}.  Here are the results of testing the latest 
  against master revision 1061cf5.

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

    {color:red}-1 tests included{color}.  The patch doesn't appear to include 
any new or modified tests.
                        Please justify why no new tests are needed for this 
                        Also please list what manual steps were performed to 
verify this patch.

    {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: 
Console output: https://builds.apache.org/job/PreCommit-TEZ-Build/2610//console

This message is automatically generated.

> Ability to automatically speculate single-task vertices
> -------------------------------------------------------
>                 Key: TEZ-3816
>                 URL: https://issues.apache.org/jira/browse/TEZ-3816
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Muhammad Samir Khan
>            Assignee: Muhammad Samir Khan
>         Attachments: TEZ-3816.001.patch
> When a single-task vertex is unlucky, it lands on a very slow node. 
> Speculation doesn't currently apply when there are no other tasks to compare 
> with. It would be good to have a configurable timeout after which the tasks 
> automatically speculate.

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