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From Paul Ingalls <paulinga...@gmail.com>
Subject NPE in CompactionExecutor
Date Fri, 19 Jul 2013 17:04:31 GMT
I'm seeing a number of NullPointerExceptions in the log of my cluster.  You can see the log
line below.  I'm thinking this is probably bad.  Any ideas?

ERROR [CompactionExecutor:38] 2013-07-19 17:01:34,494 CassandraDaemon.java (line 192) Exception
in thread Thread[CompactionExecutor:38,1,main]
java.lang.NullPointerException

Not sure if this is related or not, but I'm also getting a bunch of AssertionErrors as well,
even after running a scrub…

ERROR [CompactionExecutor:38] 2013-07-19 17:01:06,192 CassandraDaemon.java (line 192) Exception
in thread Thread[CompactionExecutor:38,1,main]
java.lang.AssertionError: incorrect row data size 29502477 written to /mnt/datadrive/lib/cassandra/data/fanzo/tweets_by_team/fanzo-tweets_by_team-tmp-ic-5262-Data.db;
correct is 29725806
	at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:162)
	at org.apache.cassandra.db.compaction.CompactionTask.runWith(CompactionTask.java:162)
	at org.apache.cassandra.io.util.DiskAwareRunnable.runMayThrow(DiskAwareRunnable.java:48)
	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
	at org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:58)
	at org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:60)
	at org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:211)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:724)
 


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