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https://issues.apache.org/jira/browse/KAFKA-4953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Matthias J. Sax resolved KAFKA-4953.
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Resolution: Duplicate
> Global Store: cast exception when initialising with in-memory logged state
> store
> --------------------------------------------------------------------------------
>
> Key: KAFKA-4953
> URL: https://issues.apache.org/jira/browse/KAFKA-4953
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.2.0
> Reporter: Yennick Trevels
> Priority: Major
> Labels: user-experience
>
> Currently it is not possible to initialise a global store with an in-memory
> *logged* store via the TopologyBuilder. This results in the following
> exception:
> {code}
> java.lang.ClassCastException:
> org.apache.kafka.streams.processor.internals.GlobalProcessorContextImpl
> cannot be cast to
> org.apache.kafka.streams.processor.internals.RecordCollector$Supplier
> at
> org.apache.kafka.streams.state.internals.StoreChangeLogger.<init>(StoreChangeLogger.java:52)
> at
> org.apache.kafka.streams.state.internals.StoreChangeLogger.<init>(StoreChangeLogger.java:44)
> at
> org.apache.kafka.streams.state.internals.InMemoryKeyValueLoggedStore.init(InMemoryKeyValueLoggedStore.java:56)
> at
> org.apache.kafka.streams.state.internals.MeteredKeyValueStore$7.run(MeteredKeyValueStore.java:99)
> at
> org.apache.kafka.streams.processor.internals.StreamsMetricsImpl.measureLatencyNs(StreamsMetricsImpl.java:187)
> at
> org.apache.kafka.streams.state.internals.MeteredKeyValueStore.init(MeteredKeyValueStore.java:130)
> at
> org.apache.kafka.streams.processor.internals.GlobalStateManagerImpl.initialize(GlobalStateManagerImpl.java:97)
> at
> org.apache.kafka.streams.processor.internals.GlobalStateUpdateTask.initialize(GlobalStateUpdateTask.java:61)
> at
> org.apache.kafka.test.ProcessorTopologyTestDriver.<init>(ProcessorTopologyTestDriver.java:215)
> at
> org.apache.kafka.streams.processor.internals.ProcessorTopologyTest.shouldDriveInMemoryLoggedGlobalStore(ProcessorTopologyTest.java:235)
> ...
> {code}
> I've created a PR which includes a unit this to verify this behavior.
> If the below PR gets merge, the fixing PR should leverage the provided test
> {{ProcessorTopologyTest#shouldDriveInMemoryLoggedGlobalStore}} by removing
> the {{@ignore}} annotation.
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