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https://issues.apache.org/jira/browse/CASSANDRA-8210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Marcus Eriksson resolved CASSANDRA-8210.
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Resolution: Duplicate
I suspect this is related to CASSANDRA-8211 - if we pick an sstable that is
already compacting, this can happen, and the bug in 8211 is likely to be that
we pick bad compaction candidates
> "java.lang.AssertionError: Memory was freed" exception in CompactionExecutor
> ----------------------------------------------------------------------------
>
> Key: CASSANDRA-8210
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8210
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: DSE 4.5.2, Cassandra 2.0.10, OEL 6.5, kernel
> 3.8.13-44.el6uek.x86_64, 128Gb of RAM, swap disabled, JRE 1.7.0_67-b01
> Reporter: Nikolai Grigoriev
> Priority: Minor
> Attachments: cassandra-env.sh, cassandra.yaml, occurence
> frequency.png, system.log.gz
>
>
> I have just got this problem on multiple nodes. Cassandra 2.0.10 (DSE 4.5.2).
> After looking through the history I have found that it was actually happening
> on all nodes since the start of large compaction process (I've loaded tons of
> data in the system and then turned off all load to let it compact the data).
> {code}
> ERROR [CompactionExecutor:1196] 2014-10-28 17:14:50,124 CassandraDaemon.java
> (line 199) Exception in thread Thread[CompactionExecutor:1196,1,main]
> java.lang.AssertionError: Memory was freed
> at org.apache.cassandra.io.util.Memory.checkPosition(Memory.java:259)
> at org.apache.cassandra.io.util.Memory.getInt(Memory.java:211)
> at
> org.apache.cassandra.io.sstable.IndexSummary.getIndex(IndexSummary.java:79)
> at
> org.apache.cassandra.io.sstable.IndexSummary.getKey(IndexSummary.java:84)
> at
> org.apache.cassandra.io.sstable.IndexSummary.binarySearch(IndexSummary.java:58)
> at
> org.apache.cassandra.io.sstable.SSTableReader.getSampleIndexesForRanges(SSTableReader.java:692)
> at
> org.apache.cassandra.io.sstable.SSTableReader.estimatedKeysForRanges(SSTableReader.java:663)
> at
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy.worthDroppingTombstones(AbstractCompactionStrategy.java:328)
> at
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.findDroppableSSTable(LeveledCompactionStrategy.java:354)
> at
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getMaximalTask(LeveledCompactionStrategy.java:125)
> at
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getNextBackgroundTask(LeveledCompactionStrategy.java:113)
> at
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionTask.run(CompactionManager.java:192)
> at
> java.util.concurrent.Executors$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}
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