I'm getting constant exceptions during compaction of large rows. In fact, I
have not seen one work, even starting from an empty DB. As soon as I start
pushing in data, when a row hits the large threshold, it fails compaction with
this type of stack trace:
INFO [CompactionExecutor:6] 2013-07-24 01:17:53,592 CompactionController.java
(line 156) Compacting large row fanzo/tweets_by_id:352567939972603904
(153360688 bytes) incrementally
ERROR [CompactionExecutor:6] 2013-07-24 01:18:12,496 CassandraDaemon.java (line
192) Exception in thread Thread[CompactionExecutor:6,1,main]
java.lang.AssertionError: incorrect row data size 5722610 written to
/mnt/datadrive/lib/cassandra/data/fanzo/tweets_by_id/fanzo-tweets_by_id-tmp-ic-1453-Data.db;
correct is 5767384
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)
I'm not sure what to do or where to look. Help…:)
Thanks,
Paul
