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From "Omid Aladini (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4411) Assertion with LCS compaction
Date Wed, 18 Jul 2012 12:15:35 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13417024#comment-13417024
] 

Omid Aladini commented on CASSANDRA-4411:
-----------------------------------------

Awesome. Thanks for the patch. Tested it and it works.

Sylvain, regarding your earlier comment on CASSANDRA-4321:

{quote} This is not really a new bug, but I believe that prior to CASSANDRA-4142, this had
less consequences. {quote}

Does it mean LC-compacted SSTables created by 1.1.0 or earlier are as well affected and need
to be scrubbed?
                
> 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
>            Assignee: Sylvain Lebresne
>             Fix For: 1.1.3
>
>         Attachments: 0001-Add-debugging-info-for-LCS.txt, 4411-followup.txt, 4411.txt,
assertion-w-more-debugging-info-omid.log, assertion.moreinfo.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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