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Posted to jira@kafka.apache.org by "Sam Lendle (JIRA)" <ji...@apache.org> on 2018/07/18 01:28:00 UTC
[jira] [Created] (KAFKA-7176) State store metrics for migrated
tasks are not removed
Sam Lendle created KAFKA-7176:
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Summary: State store metrics for migrated tasks are not removed
Key: KAFKA-7176
URL: https://issues.apache.org/jira/browse/KAFKA-7176
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 1.1.0
Reporter: Sam Lendle
I observed that state store metrics for tasks that have been migrated to other instances are not removed and are still being updated with phantom values, (when viewed for example via jmx mbeans).
For all tasks/threads on the same instance (including for migrated tasks), the values of state store metrics are all (nearly) the same. For the rate metrics at least, the value reported for each task is the rate I expect for all active tasks on that instance, so things are apparently being counted multiple times. Presumably, this is how migrated task metrics are being updated.
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