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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1744) Compaction errors: "Keys must be written in ascending order"
Date Sun, 14 Nov 2010 19:55:15 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931875#action_12931875
] 

Brandon Williams commented on CASSANDRA-1744:
---------------------------------------------

I can reproduce just by inserting 1M rows.  I'm not triggering a major compaction, a minor
is naturally occurring and causing the errors.

> Compaction errors: "Keys must be written in ascending order"
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-1744
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1744
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Brandon Williams
>             Fix For: 0.7.0
>
>
> When compaction starts, many of these exceptions are thrown:
> ERROR 16:53:00,252 non-fatal error during compaction
> java.io.IOException: Keys must be written in ascending order.
>         at org.apache.cassandra.io.sstable.SSTableWriter.beforeAppend(SSTableWriter.java:134)
>         at org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:151)
>         at org.apache.cassandra.db.CompactionManager.doCompaction(CompactionManager.java:279)
>         at org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:109)
>         at org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:87)
>         at java.util.concurrent.FutureTask$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)
> Easily reproduced with stress.py

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