Jeff Zhang created TEZ-2041:
-------------------------------

             Summary: TEZ-UI May need to provide extra info about recovery on 
tez-ui
                 Key: TEZ-2041
                 URL: https://issues.apache.org/jira/browse/TEZ-2041
             Project: Apache Tez
          Issue Type: Bug
          Components: UI
            Reporter: Jeff Zhang
            Priority: Minor


There's one special case that one task may be associated with 2 succeeded 
task_attempt when recovery happens. If the first succeeded task attempt can not 
be recovered. Another task attempt will be scheduled. So in this case, there 
will be 2 succeeded task attempts for the same task. It may confuse users on 
tez-ui, maybe could provide extra info about recovery on tez-ui. This also need 
extra info in the history event.

{code}
2015-02-05 17:11:14,999 INFO [Dispatcher thread: Central] impl.TaskImpl: Trying 
to recover task, taskId=task_1423126607079_0004_1_04_000000, 
recoveredState=SUCCEEDED
2015-02-05 17:11:14,999 INFO [Dispatcher thread: Central] impl.TaskImpl: 
Recovering data for task from previous DAG attempt, 
taskId=task_1423126607079_0004_1_04_000000, output=scope-43
2015-02-05 17:11:14,999 INFO [Dispatcher thread: Central] impl.TaskImpl: Task 
recovery not supported by committer, failing task attempt, 
taskId=task_1423126607079_0004_1_04_000000, 
attemptId=attempt_1423126607079_0004_1_04_000000_0, output=scope-43
2015-02-05 17:11:15,000 INFO [Dispatcher thread: Central] impl.TaskImpl: 
task_1423126607079_0004_1_04_000000 Task Transitioned from NEW to RUNNING due 
to event T_RECOVER
{code}



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