Nikolai Grigoriev created CASSANDRA-8190:
--------------------------------------------
Summary: 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
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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