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Posted to jira@kafka.apache.org by "John Roesler (Jira)" <ji...@apache.org> on 2020/10/10 03:04:00 UTC
[jira] [Assigned] (KAFKA-10215) MockProcessorContext doesn't work
with SessionStores
[ https://issues.apache.org/jira/browse/KAFKA-10215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
John Roesler reassigned KAFKA-10215:
------------------------------------
Assignee: John Roesler
> MockProcessorContext doesn't work with SessionStores
> ----------------------------------------------------
>
> Key: KAFKA-10215
> URL: https://issues.apache.org/jira/browse/KAFKA-10215
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Reporter: John Roesler
> Assignee: John Roesler
> Priority: Major
>
> The recommended pattern for testing custom Processor implementations is to use the test-utils MockProcessorContext. If a Processor implementation needs a store, the store also has to be initialized with the same context. However, the existing (in-memory and persistent) Session store implementations perform internal casts that result in class cast exceptions if you attempt to initialize them with the MockProcessorContext.
> A workaround is to instead embed the processor in an application and use the TopologyTestDriver instead.
> The fix is the same as for KAFKA-10200
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