Siddharth Seth created HIVE-14403:
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Summary: LLAP node specific preemption will only preempt once on a
node per AM
Key: HIVE-14403
URL: https://issues.apache.org/jira/browse/HIVE-14403
Project: Hive
Issue Type: Bug
Reporter: Siddharth Seth
Assignee: Siddharth Seth
Priority: Critical
Query hang reported by [~cartershanklin]
Turns out that once an AM has preempted a task on a node for locality, it will
not be able to preempt another task on the same node (specifically for local
requests)
Manifests as a query hanging. It's possible for a previous query to interfere
with a subsequent query since the AM is shared.
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