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https://issues.apache.org/jira/browse/CASSANDRA-10722?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
C. Scott Andreas resolved CASSANDRA-10722.
------------------------------------------
Resolution: Information Provided
> Error in system.log file about the compaction
> ---------------------------------------------
>
> Key: CASSANDRA-10722
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10722
> Project: Cassandra
> Issue Type: Test
> Environment: 2nodes,
> each 8GB RAM
> 500GB Disk
> dual core
> Reporter: Arunsandu
> Priority: Minor
> Attachments: Error_Compaction_systemlog.txt
>
>
> Was performing load testing on my tables using cassandra-stress and after the
> test I did drop the keyspace(autogeneratedtest). I keep getting the message
> in system.log every minute.
> component_tracking_by_scid-ka-6-Data.db
> component_tracking_by_scid-ka-7-Data.db
> component_tracking_by_scid-ka-8-Data.db
> component_tracking_by_scid-ka-9-Data.db
> component_tracking_by_scid-ka-10-Data.db
> These SSTables no longer exists in my data directory. Just wanted to know if
> deleting saved_caches of this keyspace would fix my issue. If so, is that
> good practice to delete saved_caches?
> -------------------------------------------------------------
> INFO [CompactionExecutor:5] 2015-11-17 09:27:58,894 CompactionTask.java:141
> - Compacting
> [SSTableReader(path='/apps/apg-data.cassandra/data/autogeneratedtest/component_tracking_by_scid-bb55a0818a6111e59c5e677600703f12/autogeneratedtest-component_tracking_by_scid-ka-8-Data.db'),
>
> SSTableReader(path='/apps/apg-data.cassandra/data/autogeneratedtest/component_tracking_by_scid-bb55a0818a6111e59c5e677600703f12/autogeneratedtest-component_tracking_by_scid-ka-7-Data.db'),
>
> SSTableReader(path='/apps/apg-data.cassandra/data/autogeneratedtest/component_tracking_by_scid-bb55a0818a6111e59c5e677600703f12/autogeneratedtest-component_tracking_by_scid-ka-6-Data.db'),
>
> SSTableReader(path='/apps/apg-data.cassandra/data/autogeneratedtest/component_tracking_by_scid-bb55a0818a6111e59c5e677600703f12/autogeneratedtest-component_tracking_by_scid-ka-9-Data.db'),
>
> SSTableReader(path='/apps/apg-data.cassandra/data/autogeneratedtest/component_tracking_by_scid-bb55a0818a6111e59c5e677600703f12/autogeneratedtest-component_tracking_by_scid-ka-10-Data.db')]
> ERROR [CompactionExecutor:5] 2015-11-17 09:27:58,895
> CassandraDaemon.java:222 - Exception in thread
> Thread[CompactionExecutor:5,1,main]
> java.lang.AssertionError:
> /apps/apg-data.cassandra/data/autogeneratedtest/component_tracking_by_scid-bb55a0818a6111e59c5e677600703f12/autogeneratedtest-component_tracking_by_scid-ka-8-Data.db
> at
> org.apache.cassandra.io.sstable.SSTableReader.getApproximateKeyCount(SSTableReader.java:279)
> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
> at
> org.apache.cassandra.db.compaction.CompactionTask.runMayThrow(CompactionTask.java:151)
> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
> at
> org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
> at
> org.apache.cassandra.db.compaction.CompactionTask.executeInternal(CompactionTask.java:73)
> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
> at
> org.apache.cassandra.db.compaction.AbstractCompactionTask.execute(AbstractCompactionTask.java:59)
> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
> at
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:236)
> ~[cassandra-all-2.1.8.689.jar:2.1.8.689]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_31]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> ~[na:1.8.0_31]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> ~[na:1.8.0_31]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_31]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_31]
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