Bikas Saha created TEZ-1779:
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Summary: Handle race condition for failure after success of a leaf
vertex task
Key: TEZ-1779
URL: https://issues.apache.org/jira/browse/TEZ-1779
Project: Apache Tez
Issue Type: Bug
Reporter: Bikas Saha
Currently, a leaf task is not expected to fail after success because tasks fail
after success only when outputs are reported failed and noone can report a leaf
vertex output as failed because noone reads it. However, as discussed in
TEZ-14, there can be a case where 2 attempts are running and 1 succeeds. Then
the second one is killed but it fails before getting killed. This failure would
break the cannot fail after success assumption that currently is present in the
code. Does the leaf vertex need special handling anyways?
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