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https://issues.apache.org/jira/browse/CASSANDRA-8190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14186231#comment-14186231
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Nikolai Grigoriev commented on CASSANDRA-8190:
----------------------------------------------
Happens quite often. I have captured the thread dump and server log (both
attached) when I've got this issue again on one of the nodes.
{code}
pending tasks: 601
Active compaction remaining time : n/a
{code}
> Compactions stop completely because of RuntimeException in CompactionExecutor
> -----------------------------------------------------------------------------
>
> Key: CASSANDRA-8190
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8190
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: DSE 4.5.2 (Cassandra 2.0.10)
> Reporter: Nikolai Grigoriev
> Attachments: jstack.txt.gz, system.log.gz
>
>
> I have a cluster that is recovering from being overloaded with writes. I am
> using the workaround from CASSANDRA-6621 to prevent the STCS fallback (which
> is killing the cluster - see CASSANDRA-7949).
> I have observed that after one or more exceptions like this
> {code}
> ERROR [CompactionExecutor:4087] 2014-10-26 22:50:05,016 CassandraDaemon.java
> (line 199) Exception in thread Thread[CompactionExecutor:4087,1,main]
> java.lang.RuntimeException: Last written key DecoratedKey(425124616570337476,
> 0010000000001111000000000000033523da00001000000000033523da000000001111000000001000000000
> 00004000000000000000000100) >= current key DecoratedKey(-8778432288598355336,
> 0010000000001111000000000000040c7a8f00001000000000040c7a8f000000001111000000001000000000
> 00004000000000000000000100) writing into
> /cassandra-data/disk2/myks/mytable/myks-mytable-tmp-jb-130379-Data.db
> at
> org.apache.cassandra.io.sstable.SSTableWriter.beforeAppend(SSTableWriter.java:142)
> at
> org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:165)
> at
> org.apache.cassandra.db.compaction.CompactionTask.runWith(CompactionTask.java:160)
> 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:60)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:59)
> at
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:198)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> 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:745)
> {code}
> the node completely stops the compactions and I end up in the state like this:
> {code}
> # nodetool compactionstats
> pending tasks: 1288
> compaction type keyspace table completed
> total unit progress
> Active compaction remaining time : n/a
> {code}
> The node recovers if restarted and starts compactions - until getting more
> exceptions like this.
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