Jonathan Eagles commented on TEZ-3897:

{color:green}+1 overall{color}.  Here are the results of testing the latest 
  against master revision bb40cf5.

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

    {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 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/2734//console

> Tez Local Mode hang for vertices with broadcast input
> -----------------------------------------------------
>                 Key: TEZ-3897
>                 URL: https://issues.apache.org/jira/browse/TEZ-3897
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jonathan Eagles
>            Assignee: Jonathan Eagles
>            Priority: Major
>         Attachments: TEZ-3897.001.patch, TEZ-3897.002.patch
> Broadcast edges are not taken into consideration for slow-start edges so 
> downstream tasks in local mode can start before upstream tasks. Without 
> preemption in the scheduler, there will be a hang.

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