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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10089) NullPointerException in Gossip handleStateNormal
Date Mon, 09 Nov 2015 07:45:10 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14996159#comment-14996159
] 

Stefania commented on CASSANDRA-10089:
--------------------------------------

[~jkni] sorry for the delay, I got side-tracked by another ticket.

I've implemented the proposed copy-on-write of the map using an atomic reference. I've limited
access to it best I could but we are still exposing the entry set for callers to iterate over
it. Further, we no longer log an error if we have no tokens in status SHUTDOWN.

CI is still running.

> NullPointerException in Gossip handleStateNormal
> ------------------------------------------------
>
>                 Key: CASSANDRA-10089
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10089
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Stefania
>            Assignee: Stefania
>             Fix For: 2.1.x, 2.2.x, 3.1
>
>         Attachments: node1_debug.log, node2_debug.log, node3_debug.log
>
>
> Whilst comparing dtests for CASSANDRA-9970 I found [this failing dtest|http://cassci.datastax.com/view/Dev/view/blerer/job/blerer-9970-dtest/lastCompletedBuild/testReport/consistency_test/TestConsistency/short_read_test/]
in 2.2:
> {code}
> Unexpected error in node1 node log: ['ERROR [GossipStage:1] 2015-08-14 15:39:57,873 CassandraDaemon.java:183
- Exception in thread Thread[GossipStage:1,5,main] java.lang.NullPointerException: null \tat
org.apache.cassandra.service.StorageService.getApplicationStateValue(StorageService.java:1731)
~[main/:na] \tat org.apache.cassandra.service.StorageService.getTokensFor(StorageService.java:1804)
~[main/:na] \tat org.apache.cassandra.service.StorageService.handleStateNormal(StorageService.java:1857)
~[main/:na] \tat org.apache.cassandra.service.StorageService.onChange(StorageService.java:1629)
~[main/:na] \tat org.apache.cassandra.service.StorageService.onJoin(StorageService.java:2312)
~[main/:na] \tat org.apache.cassandra.gms.Gossiper.handleMajorStateChange(Gossiper.java:1025)
~[main/:na] \tat org.apache.cassandra.gms.Gossiper.applyStateLocally(Gossiper.java:1106) ~[main/:na]
\tat org.apache.cassandra.gms.GossipDigestAck2VerbHandler.doVerb(GossipDigestAck2VerbHandler.java:49)
~[main/:na] \tat org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:66)
~[main/:na] \tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
~[na:1.7.0_80] \tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
~[na:1.7.0_80] \tat java.lang.Thread.run(Thread.java:745) ~[na:1.7.0_80]']
> {code}
> I wasn't able to find it on unpatched branches  but it is clearly not related to CASSANDRA-9970,
if anything it could have been a side effect of CASSANDRA-9871.



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