[jira] [Created] (TEZ-3345) Diagnostics for a failed AM may not show up on the DAG UI page.

["Kuhu Shukla (JIRA)" <ji...@apache.org>]

Kuhu Shukla created TEZ-3345:
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             Summary: Diagnostics for a failed AM may not show up on the DAG UI page.
                 Key: TEZ-3345
                 URL: https://issues.apache.org/jira/browse/TEZ-3345
             Project: Apache Tez
          Issue Type: Bug
          Components: UI
            Reporter: Kuhu Shukla


In a scenario where AM fails on all its attempts, the DAG page does not show the Diagnostics message on the Tez UI "Diagnostics" section. The messageis available on the AHS and could be pulled into the DAG page just like we do for failed vertices.

I ran a simple Tez example job that was given way too less memory causing the AM to fail:
{code}
hadoop jar /home/gs/tez/current/tez-examples-0.7.1.x.x.jar orderedwordcount -Dtez.am.resource.memory.mb=16 -Dtez.am.launch.cmd-opts="-Xmx13m -Djava.net.preferIPv4Stack=true -XX:+UseNUMA -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:<LOG_DIR>/gc.log"/books /output
{code}



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