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https://issues.apache.org/jira/browse/KAFKA-20571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nikita Shupletsov updated KAFKA-20571:
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Description: If `metricValue()` method is called on `num-keys` before the
storage is initialized, `InvalidStateStoreException` is thrown (was: There is
a separate thread that fetches metrics, and if it kicks in before the storage
gets initialized, an exception occurs that kills the thread.)
> InMemory KeyValue store metric throws exception
> -----------------------------------------------
>
> Key: KAFKA-20571
> URL: https://issues.apache.org/jira/browse/KAFKA-20571
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: Bill Bejeck
> Priority: Blocker
> Fix For: 4.3.0
>
>
> If `metricValue()` method is called on `num-keys` before the storage is
> initialized, `InvalidStateStoreException` is thrown
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