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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-5673) NullPointerException on running instances
Date Thu, 20 Jun 2013 16:27:23 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-5673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13689381#comment-13689381
] 

Jonathan Ellis commented on CASSANDRA-5673:
-------------------------------------------

Please test 1.2.5, SSTableNamesIterator has changed substantially due to CASSANDRA-5492.
                
> NullPointerException on running instances
> -----------------------------------------
>
>                 Key: CASSANDRA-5673
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5673
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.2.4
>            Reporter: Sanjay
>
> Hallo,
> We are having sporadic NullPointerException in some of the cassandra nodes in cluster
(See stacktrace). 
> We are having two Datacenter, each having 15 nodes with RF = 2, OS is SLES with java-1_6_0-ibm-1.6.0_sr12.0-0.5.1.

> At present only  workaround is to stop the application running on same node and run repair
tool on cassandra. We are unable to identify the cause of error.
> 1)
> INFO|ScheduledTasks:1|org.apache.cassandra.service.GCInspector|GC for MarkSweepCompact:
347 ms for 1 collections, 138398568 used; ma
> x is 1051721728
> 2013-06-19T16:25:50:843|ERROR|ReplicateOnWriteStage:115|org.apache.cassandra.service.CassandraDaemon|Exception
in thread Thread[ReplicateOnWriteStage:115,5,m
> ain]
> java.lang.RuntimeException: java.lang.NullPointerException
>         at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1582)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:897)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:919)
>         at java.lang.Thread.run(Thread.java:738)
> Caused by: java.lang.NullPointerException
>         at java.util.TreeSet.iterator(TreeSet.java:230)
>         at org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:163)
>         at org.apache.cassandra.db.columniterator.SSTableNamesIterator.<init>(SSTableNamesIterator.java:64)
>         at org.apache.cassandra.db.filter.NamesQueryFilter.getSSTableColumnIterator(NamesQueryFilter.java:81)
>         at org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:68)
>         at org.apache.cassandra.db.CollationController.collectAllData(CollationController.java:274)
>         at org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:65)
>         at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1357)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1214)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1126)
>         at org.apache.cassandra.db.Table.getRow(Table.java:347)
>         at org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:64)
>         at org.apache.cassandra.db.CounterMutation.makeReplicationMutation(CounterMutation.java:90)
>         at org.apache.cassandra.service.StorageProxy$7$1.runMayThrow(StorageProxy.java:796)
>         at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1578)
>         ... 3 more
> 2013-06-19T16:26:01:001|ERROR|ReadStage:4833|org.apache.cassandra.service.CassandraDaemon|Exception
in thread Thread[ReadStage:4833,5,main]
> java.lang.RuntimeException: java.lang.NullPointerException
>         at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1582)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:897)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:919)
>         at java.lang.Thread.run(Thread.java:738)
> Caused by: java.lang.NullPointerException
>         at java.util.TreeSet.iterator(TreeSet.java:230)
>         at org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:163)
>         at org.
> 2)
> 2013-06-19T08:38:23:436| INFO|Thread-2447|org.apache.cassandra.service.StorageService|Starting
repair command #2, repairing 1 ranges for keyspace system_auth
> 2013-06-19T08:58:25:685|ERROR|ReadStage:9270|org.apache.cassandra.service.CassandraDaemon|Exception
in thread Thread[ReadStage:9270,5,main]
> java.lang.NullPointerException
>         at java.util.TreeSet.iterator(TreeSet.java:230)
>         at org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:163)
>         at org.apache.cassandra.db.columniterator.SSTableNamesIterator.<init>(SSTableNamesIterator.java:64)
>         at org.apache.cassandra.db.filter.NamesQueryFilter.getSSTableColumnIterator(NamesQueryFilter.java:81)
>         at org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:68)
>         at org.apache.cassandra.db.CollationController.collectTimeOrderedData(CollationController.java:133)
>         at org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:65)
>         at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1357)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1214)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1126)
>         at org.apache.cassandra.db.Table.getRow(Table.java:347)
>         at org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:64)
>         at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:44)
>         at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:56)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:908)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:931)
>         at java.lang.Thread.run(Thread.java:738)
> Best Regards
> Sanjay

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