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https://issues.apache.org/jira/browse/CASSANDRA-4411?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-4411:
----------------------------------------
Attachment: 0001-Add-debugging-info-for-LCS.txt
Unfortunately the log doesn't give us much to chew on.
I've actually be able to reproduce this once (using stress). Unfortunately, I
hadn't added more debugging yet and since I added more debug info I haven't
been able to reproduce (despite having retried from scratch like 3 times
letting it run for multiple hours each time).
So I'm attaching a simple patch that adds more debugging. If you guys can try
applying the patch and see if you can reproduce. If so, the log file produced
should be helpful. I'll note that it is preferable to *not* turn DEBUG logging
with this patch as this is not useful and would only generate awfully large
logs.
> Assertion with LCS compaction
> -----------------------------
>
> Key: CASSANDRA-4411
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4411
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.2
> Reporter: Anton Winter
> Fix For: 1.1.3
>
> Attachments: 0001-Add-debugging-info-for-LCS.txt,
> assertion.system.log, system.log
>
>
> As instructed in CASSANDRA-4321 I have raised this issue as a continuation of
> that issue as it appears the problem still exists.
> I have repeatedly run sstablescrub across all my nodes after the 1.1.2
> upgrade until sstablescrub shows no errors. The exceptions described in
> CASSANDRA-4321 do not occur as frequently now but the integrity check still
> throws exceptions on a number of nodes. Once those exceptions occur
> compactionstats shows a large number of pending tasks with no progression
> afterwards.
> {code}
> ERROR [CompactionExecutor:150] 2012-07-05 04:26:15,570
> AbstractCassandraDaemon.java (line 134) Exception in thread
> Thread[CompactionExecutor:150,1,main]
> java.lang.AssertionError
> at
> org.apache.cassandra.db.compaction.LeveledManifest.promote(LeveledManifest.java:214)
> at
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.handleNotification(LeveledCompactionStrategy.java:158)
> at
> org.apache.cassandra.db.DataTracker.notifySSTablesChanged(DataTracker.java:531)
> at
> org.apache.cassandra.db.DataTracker.replaceCompactedSSTables(DataTracker.java:254)
> at
> org.apache.cassandra.db.ColumnFamilyStore.replaceCompactedSSTables(ColumnFamilyStore.java:978)
> at
> org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:200)
> at
> org.apache.cassandra.db.compaction.LeveledCompactionTask.execute(LeveledCompactionTask.java:50)
> at
> org.apache.cassandra.db.compaction.CompactionManager$1.runMayThrow(CompactionManager.java:150)
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:636)
> {code}
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