Guozhang Wang created KAFKA-2160:
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Summary: DelayedOperationPurgatory should remove the pair in
watchersForKey with empty watchers list
Key: KAFKA-2160
URL: https://issues.apache.org/jira/browse/KAFKA-2160
Project: Kafka
Issue Type: Bug
Reporter: Guozhang Wang
Assignee: Guozhang Wang
With purgatory usage in consumer coordinator, it will be common that watcher
lists are very short and live only for a short time. So we'd better clean them
from the watchersForKey Pool once the list become empty in checkAndComplete()
calls.
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