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From Oleg Dulin <oleg.du...@gmail.com>
Subject Cass 1.1.1 and 1.1.11 Exception during compactions
Date Mon, 29 Apr 2013 13:31:12 GMT
We saw this exception with 1.1.1 and also with 1.1.11 (we upgraded for 
unrelated reasons, to fix the FD leak during slice queries) -- name of 
the CF replaced with "*" for confidentiality:

10419 ERROR [CompactionExecutor:36] 2013-04-29 07:50:49,060 
AbstractCassandraDaemon.java (line 132) Exception in thread T      
hread[CompactionExecutor:36,1,main]
10420 java.lang.RuntimeException: Last written key 
DecoratedKey(138024912283272996716128964353306009224, 6138633035613062  
    2d616666362d376330612d666531662d373738616630636265396535) >= 
current key DecoratedKey(12706537740594940274338371890      1402082101, 
64323962636163652d646561372d333039322d386166322d663064346132363963386131) 
writing into *-tmp-hf-7372-Data.db
10421         at 
org.apache.cassandra.io.sstable.SSTableWriter.beforeAppend(SSTableWriter.java:134) 

10422         at 
org.apache.cassandra.io.sstable.SSTableWriter.append(SSTableWriter.java:153) 

10423         at 
org.apache.cassandra.db.compaction.CompactionTask.execute(CompactionTask.java:160) 

10424         at 
org.apache.cassandra.db.compaction.LeveledCompactionTask.execute(LeveledCompactionTask.java:50)


10425         at 
org.apache.cassandra.db.compaction.CompactionManager$2.runMayThrow(CompactionManager.java:164)


10426         at 
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
10427         at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
10428         at 
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
10429         at java.util.concurrent.FutureTask.run(FutureTask.java:166)
10430         at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 

10431         at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 

10432         at java.lang.Thread.run(Thread.java:722)


ANy thoughts ? Should I be concerned about data being lost ?


-- 
Regards,
Oleg Dulin
NYC Java Big Data Engineer
http://www.olegdulin.com/



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