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https://issues.apache.org/jira/browse/CASSANDRA-8067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14206159#comment-14206159
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Andreas Schnitzerling commented on CASSANDRA-8067:
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I still have the same issue running since a few weeks w/ 2.1.1 and I already
upgraded the sstables on that node. There are a lot in my system.log. In 2.0.10
there was not such an issue. I still have most nodes running on 2.0.10. I'm
curious for Yuki's report, if upgrading the whole cluster fixes the problem.
You can see my system.log at CASSANDRA-8192.
> NullPointerException in KeyCacheSerializer
> ------------------------------------------
>
> Key: CASSANDRA-8067
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8067
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: Eric Leleu
> Fix For: 2.1.1
>
>
> Hi,
> I have this stack trace in the logs of Cassandra server (v2.1)
> {code}
> ERROR [CompactionExecutor:14] 2014-10-06 23:32:02,098
> CassandraDaemon.java:166 - Exception in thread
> Thread[CompactionExecutor:14,1,main]
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.service.CacheService$KeyCacheSerializer.serialize(CacheService.java:475)
> ~[apache-cassandra-2.1.0.jar:2.1.0]
> at
> org.apache.cassandra.service.CacheService$KeyCacheSerializer.serialize(CacheService.java:463)
> ~[apache-cassandra-2.1.0.jar:2.1.0]
> at
> org.apache.cassandra.cache.AutoSavingCache$Writer.saveCache(AutoSavingCache.java:225)
> ~[apache-cassandra-2.1.0.jar:2.1.0]
> at
> org.apache.cassandra.db.compaction.CompactionManager$11.run(CompactionManager.java:1061)
> ~[apache-cassandra-2.1.0.jar:2.1.0]
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
> Source) ~[na:1.7.0]
> at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
> ~[na:1.7.0]
> at java.util.concurrent.FutureTask.run(Unknown Source) ~[na:1.7.0]
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> [na:1.7.0]
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> [na:1.7.0]
> at java.lang.Thread.run(Unknown Source) [na:1.7.0]
> {code}
> It may not be critical because this error occured in the AutoSavingCache.
> However the line 475 is about the CFMetaData so it may hide bigger issue...
> {code}
> 474 CFMetaData cfm =
> Schema.instance.getCFMetaData(key.desc.ksname, key.desc.cfname);
> 475 cfm.comparator.rowIndexEntrySerializer().serialize(entry,
> out);
> {code}
> Regards,
> Eric
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