[jira] [Commented] (TEZ-1928) Tez local mode hang in Pig tez local mode

["Siddharth Seth (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TEZ-1928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14268920#comment-14268920 ] 

Siddharth Seth commented on TEZ-1928:
-------------------------------------

[~daijy] - if you're running with Tez-0.5.3 or higher, can you try setting the following - either programmatically or via tez-site 

{code}
  <property>
    <name>tez.am.dag.scheduler.class</name>
    <value>org.apache.tez.dag.app.dag.impl.DAGSchedulerNaturalOrderControlled</value>
  </property>
{code}


> Tez local mode hang in Pig tez local mode
> -----------------------------------------
>
>                 Key: TEZ-1928
>                 URL: https://issues.apache.org/jira/browse/TEZ-1928
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Daniel Dai
>         Attachments: TestMultiQuery.log, TestMultiQueryBasic.log, TestScalarAliasesLocal.log
>
>
> Pig tez local mode tests hang under some scenario. I attached several stack trace of hanging tests.
> By setting "tez.am.inline.task.execution.max-tasks", the test does not hang. However, we cannot make it general since Pig backend code is not designed to be multithread-safe. 



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