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From "chris erway (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (CASSANDRA-2863) NPE when writing SSTable generated via repair
Date Tue, 20 Sep 2011 23:22:09 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-2863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13109079#comment-13109079
] 

chris erway edited comment on CASSANDRA-2863 at 9/20/11 11:20 PM:
------------------------------------------------------------------

I just got a similar-looking NPE stack trace.  The node that raised the exception was receiving
streams from a node being decommissioned (with "nodetool decommission").  Both nodes were
running 0.8.6; both had been upgraded a few hours earlier from 0.8.4.

The first:  

ERROR [CompactionExecutor:72] 2011-09-20 22:34:20,892 AbstractCassandraDaemon.java (line 139)
Fatal exception in thread Thread[CompactionExecutor:72,1,main]
java.lang.NullPointerException
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.close(SSTableWriter.java:382)
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.index(SSTableWriter.java:370)
        at org.apache.cassandra.io.sstable.SSTableWriter$Builder.build(SSTableWriter.java:315)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1108)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1099)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)

Then half a minute later:

 INFO [CompactionExecutor:72] 2011-09-20 22:34:46,923 SSTableReader.java (line 162) Opening
/mnt/cassandra/data/Keyspace/CF1-g-1536
ERROR [Thread-785] 2011-09-20 22:34:52,054 AbstractCassandraDaemon.java (line 139) Fatal exception
in thread Thread[Thread-785,5,main]
java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:154)
        at org.apache.cassandra.streaming.IncomingStreamReader.read(IncomingStreamReader.java:63)
        at org.apache.cassandra.net.IncomingTcpConnection.stream(IncomingTcpConnection.java:189)
        at org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:117)
Caused by: java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
        at java.util.concurrent.FutureTask.get(FutureTask.java:83)
        at org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:138)
        ... 3 more
Caused by: java.lang.NullPointerException
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.close(SSTableWriter.java:382)
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.index(SSTableWriter.java:370)
        at org.apache.cassandra.io.sstable.SSTableWriter$Builder.build(SSTableWriter.java:315)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1108)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1099)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)


      was (Author: cce):
    I just got a similar-looking NPE stack trace.  The node that raised the exception was
receiving streams from a node being decommissioned (with "nodetool decommission").  Both nodes
were running 0.8.6; both had been upgraded a few hours earlier from 0.8.4.

The first:  

ERROR [CompactionExecutor:72] 2011-09-20 22:34:20,892 AbstractCassandraDaemon.java (line 139)
Fatal exception in thread Thread[CompactionExecutor:72,1,main]
java.lang.NullPointerException
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.close(SSTableWriter.java:382)
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.index(SSTableWriter.java:370)
        at org.apache.cassandra.io.sstable.SSTableWriter$Builder.build(SSTableWriter.java:315)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1108)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1099)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)

Then half a minute later:

 INFO [CompactionExecutor:72] 2011-09-20 22:34:46,923 SSTableReader.java (line 162) Opening
/mnt/cassandra/data/Tracelytics/Events-g-1536
ERROR [Thread-785] 2011-09-20 22:34:52,054 AbstractCassandraDaemon.java (line 139) Fatal exception
in thread Thread[Thread-785,5,main]
java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:154)
        at org.apache.cassandra.streaming.IncomingStreamReader.read(IncomingStreamReader.java:63)
        at org.apache.cassandra.net.IncomingTcpConnection.stream(IncomingTcpConnection.java:189)
        at org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:117)
Caused by: java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
        at java.util.concurrent.FutureTask.get(FutureTask.java:83)
        at org.apache.cassandra.streaming.StreamInSession.closeIfFinished(StreamInSession.java:138)
        ... 3 more
Caused by: java.lang.NullPointerException
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.close(SSTableWriter.java:382)
        at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.index(SSTableWriter.java:370)
        at org.apache.cassandra.io.sstable.SSTableWriter$Builder.build(SSTableWriter.java:315)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1108)
        at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1099)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)

  
> NPE when writing SSTable generated via repair
> ---------------------------------------------
>
>                 Key: CASSANDRA-2863
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2863
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.8.1
>            Reporter: H├ęctor Izquierdo
>
> A NPE is generated during repair when closing an sstable generated via SSTable build.
It doesn't happen always. The node had been scrubbed and compacted before calling repair.
>  INFO [CompactionExecutor:2] 2011-07-06 11:11:32,640 SSTableReader.java (line 158) Opening
/d2/cassandra/data/sbs/walf-g-730
> ERROR [CompactionExecutor:2] 2011-07-06 11:11:34,327 AbstractCassandraDaemon.java (line
113) Fatal exception in thread Thread[CompactionExecutor:2,1,main] 
> java.lang.NullPointerException
> 	at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.close(SSTableWriter.java:382)
> 	at org.apache.cassandra.io.sstable.SSTableWriter$RowIndexer.index(SSTableWriter.java:370)
> 	at org.apache.cassandra.io.sstable.SSTableWriter$Builder.build(SSTableWriter.java:315)
> 	at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1103)
> 	at org.apache.cassandra.db.compaction.CompactionManager$9.call(CompactionManager.java:1094)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:662)

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