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https://issues.apache.org/jira/browse/CASSANDRA-19042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17825949#comment-17825949
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Berenguer Blasi commented on CASSANDRA-19042:
---------------------------------------------

5.0 looks like is nearing completion :fireworks: so any help here from someone 
knowledgeable would be great! #collaborating

> Repair fuzz tests fail with paxos_variant: v2
> ---------------------------------------------
>
>                 Key: CASSANDRA-19042
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-19042
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Consistency/Repair, Feature/Lightweight Transactions, 
> Test/fuzz
>            Reporter: Branimir Lambov
>            Assignee: David Capwell
>            Priority: Normal
>             Fix For: 5.0-rc, 5.x
>
>          Time Spent: 2h 10m
>  Remaining Estimate: 0h
>
> Adding {{paxos_variant: v2}} to the test yaml causes all fuzz repair tests to 
> fail with
> {code}
> java.lang.NullPointerException: null
>       at 
> org.apache.cassandra.gms.EndpointStateSerializer.serializedSize(EndpointState.java:337)
>       at 
> org.apache.cassandra.gms.EndpointStateSerializer.serializedSize(EndpointState.java:300)
>       at 
> org.apache.cassandra.service.paxos.cleanup.PaxosStartPrepareCleanup$RequestSerializer.serializedSize(PaxosStartPrepareCleanup.java:176)
>       at 
> org.apache.cassandra.service.paxos.cleanup.PaxosStartPrepareCleanup$RequestSerializer.serializedSize(PaxosStartPrepareCleanup.java:147)
>       at 
> org.apache.cassandra.net.Message$Serializer.payloadSize(Message.java:1067)
>       at org.apache.cassandra.net.Message.payloadSize(Message.java:1114)
>       at 
> org.apache.cassandra.net.Message$Serializer.serializedSize(Message.java:750)
>       at org.apache.cassandra.net.Message.serializedSize(Message.java:1094)
> ...
> {code}
> This happens for all three options of {{paxos_state_purging}} and both with 
> and without {{storage_compatibility_mode: NONE}}.
> Tests still fail if {{PaxosStartPrepareCleanup}} is changed to use 
> {{EndpointState.nullableSerializer}}.



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