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https://issues.apache.org/jira/browse/GEODE-6842?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan McMahon resolved GEODE-6842.
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Resolution: Fixed
Fix Version/s: 1.10.0
> Possible ClassCastException in HAEventWrapper during concurrent client
> registration and queue GII
> -------------------------------------------------------------------------------------------------
>
> Key: GEODE-6842
> URL: https://issues.apache.org/jira/browse/GEODE-6842
> Project: Geode
> Issue Type: Bug
> Components: client queues, client/server
> Affects Versions: 1.10.0
> Reporter: Ryan McMahon
> Assignee: Ryan McMahon
> Priority: Major
> Fix For: 1.10.0
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> It is possible for a ClassCastException to be thrown if a client is
> registering interest/CQ concurrently while a queue GII is being performed.
> The issue is that the queued event (HAEventWrapper) can be mutated by the
> client registration logic while it is in another client's queue, so if a GII
> occurs it could be serialized while being mutated. Specifically, the
> CqNameToOpHashMap was shown to throw the exception on the deserialization
> side, because of a map size/entries mismatch on the serialization side caused
> by the race described above.
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