Guozhang Wang created KAFKA-2733:
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Summary: Distinguish metric names inside the sensor registry
Key: KAFKA-2733
URL: https://issues.apache.org/jira/browse/KAFKA-2733
Project: Kafka
Issue Type: Sub-task
Reporter: Guozhang Wang
Fix For: 0.9.0.1
Since stream tasks can share the same StreamingMetrics object, and the
MetricName is distinguishable only by the group name (same for the same type of
states, and for other streaming metrics) and the tags (currently only the
client-ids of the StreamThead), when we have multiple tasks within a single
stream thread, it could lead to IllegalStateException upon trying to registry
the same metric from those tasks.
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