[jira] [Commented] (TEZ-2216) Expose errors during AM initialization

["Jeff Zhang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TEZ-2216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14372415#comment-14372415 ] 

Jeff Zhang commented on TEZ-2216:
---------------------------------

This could be done to some certain extent. Depends on 2 things:
* whether DAGClientServer is started ( Client get diagnostics from DAGClientServer
* whether YarnTaskSchedulerService is started ( YarnTaskScheduler will unregister it from RM, and push diagnostics to RM, Client get diagnostics from RM )

> Expose errors during AM initialization
> --------------------------------------
>
>                 Key: TEZ-2216
>                 URL: https://issues.apache.org/jira/browse/TEZ-2216
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Bikas Saha
>
> If there are bad configs or other issues that cause errors/exceptions during AM initialization (eg. during service init) then those errors are not exposed to the user. Exposing them would be useful in quickly debugging such issues.



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