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https://issues.apache.org/jira/browse/CASSANDRA-2769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13051086#comment-13051086
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Benjamin Coverston commented on CASSANDRA-2769:
-----------------------------------------------
I'm sorry I didn't mean to imply it should be fixed _here_. I'll find a more
appropriate venue to vent these frustrations :)
> Cannot Create Duplicate Compaction Marker
> -----------------------------------------
>
> Key: CASSANDRA-2769
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2769
> Project: Cassandra
> Issue Type: Bug
> Affects Versions: 0.8.0
> Reporter: Benjamin Coverston
> Assignee: Sylvain Lebresne
> Fix For: 0.8.2
>
> Attachments:
> 0001-0.8.0-Remove-useless-unmarkCompacting-in-doCleanup.patch,
> 0001-Do-compact-only-smallerSSTables-v2.patch,
> 0001-Do-compact-only-smallerSSTables.patch,
> 0002-Only-compact-what-has-been-succesfully-marked-as-com-v2.patch,
> 0002-Only-compact-what-has-been-succesfully-marked-as-com.patch
>
>
> Concurrent compaction can trigger the following exception when two threads
> compact the same sstable. DataTracker attempts to prevent this but apparently
> not successfully.
> java.io.IOError: java.io.IOException: Unable to create compaction marker
> at
> org.apache.cassandra.io.sstable.SSTableReader.markCompacted(SSTableReader.java:638)
> at
> org.apache.cassandra.db.DataTracker.removeOldSSTablesSize(DataTracker.java:321)
> at org.apache.cassandra.db.DataTracker.replace(DataTracker.java:294)
> at
> org.apache.cassandra.db.DataTracker.replaceCompactedSSTables(DataTracker.java:255)
> at
> org.apache.cassandra.db.ColumnFamilyStore.replaceCompactedSSTables(ColumnFamilyStore.java:932)
> at
> org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:173)
> at
> org.apache.cassandra.db.compaction.CompactionManager$1.call(CompactionManager.java:119)
> at
> org.apache.cassandra.db.compaction.CompactionManager$1.call(CompactionManager.java:102)
> at java.util.concurrent.FutureTask$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:680)
> Caused by: java.io.IOException: Unable to create compaction marker
> at
> org.apache.cassandra.io.sstable.SSTableReader.markCompacted(SSTableReader.java:634)
> ... 12 more
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