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https://issues.apache.org/jira/browse/CASSANDRA-16588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ekaterina Dimitrova updated CASSANDRA-16588:
--------------------------------------------
Reviewers: Ekaterina Dimitrova, Ekaterina Dimitrova (was: Ekaterina
Dimitrova)
Ekaterina Dimitrova, Ekaterina Dimitrova
Status: Review In Progress (was: Patch Available)
> NPE getting host_id in Gossiper.isSafeForStartup
> ------------------------------------------------
>
> Key: CASSANDRA-16588
> URL: https://issues.apache.org/jira/browse/CASSANDRA-16588
> Project: Cassandra
> Issue Type: Bug
> Components: Cluster/Gossip
> Reporter: Brandon Williams
> Assignee: Brandon Williams
> Priority: Normal
> Fix For: 3.11.x, 4.0-rc
>
>
> As seen here:
> https://ci-cassandra.apache.org/job/Cassandra-devbranch/604/testReport/junit/org.apache.cassandra.distributed.upgrade/MixedModeGossipTest/testStatusFieldShouldExistInOldVersionNodesEdgeCase/
> {noformat}
> java.lang.NullPointerException
> at org.apache.cassandra.gms.Gossiper.isSafeForStartup(Gossiper.java:952)
> at
> org.apache.cassandra.service.StorageService.checkForEndpointCollision(StorageService.java:657)
> at
> org.apache.cassandra.service.StorageService.prepareToJoin(StorageService.java:933)
> at
> org.apache.cassandra.service.StorageService.initServer(StorageService.java:784)
> at
> org.apache.cassandra.service.StorageService.initServer(StorageService.java:729)
> at
> org.apache.cassandra.distributed.impl.Instance.lambda$startup$10(Instance.java:541)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
> I believe what is happening is a GossipDigestAck has been queued to ack the
> shutdown state from the node on the seed, but isn't actually sent until the
> node has restarted and gone into shadow. Since the ack contains the node's
> IP, it assumes a host_id will be there but since this is not an actual shadow
> response, it is not.
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