Github user pwendell commented on the pull request:
https://github.com/apache/spark/pull/1336#issuecomment-49230195
Hey actually - could this differentiate between the case where the event
log was not enabled (and give a message like "Application did not enable event
logging") and a case where the event log was expected but could not be read
(and give a message like "Error reading event log"). Bonus points if you can
encode the error message in the second case.
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