Siddharth Seth created HIVE-13858:
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Summary: LLAP: A preempted task can end up waiting on
completeInitialization if some part of the executing code suppressed the
interrupt
Key: HIVE-13858
URL: https://issues.apache.org/jira/browse/HIVE-13858
Project: Hive
Issue Type: Bug
Reporter: Siddharth Seth
Assignee: Siddharth Seth
Priority: Critical
An interrupt along with a HiveProcessor.abort call is made when attempting to
preempt a task.
In this specific case, the task was in the middle of HDFS IO - which 'handled'
the interrupt by retrying. As a result the interrupt status on the thread was
reset - so instead of skipping the future.get in completeInitialization - the
task ended up blocking there.
End result - a single executor slot permanently blocked in LLAP. Depending on
what else is running - this can cause a cluster level deadlock.
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