[ 
https://issues.apache.org/jira/browse/CASSANDRA-11904?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Valentin Martinjuk updated CASSANDRA-11904:
-------------------------------------------
    Description: 
We have Cassandra cluster 2.2.5 with two datacenters(3 nodes each).
We observe ERRORs below on all nodes. The ERROR is repeated every minute. 

No any complains from customers. Do we have any chance to fix it without 
restart?

{code}
ERROR [CompactionExecutor:13996] 2016-05-26 21:20:46,700 
CassandraDaemon.java:185 - Exception in thread 
Thread[CompactionExecutor:13996,1,main]
java.lang.AssertionError: Memory was freed
        at 
org.apache.cassandra.io.util.SafeMemory.checkBounds(SafeMemory.java:103) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.io.util.Memory.getInt(Memory.java:292) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.getPositionInSummary(IndexSummary.java:148)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.fillTemporaryKey(IndexSummary.java:162)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.binarySearch(IndexSummary.java:121)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.getSampleIndexesForRanges(SSTableReader.java:1398)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.estimatedKeysForRanges(SSTableReader.java:1354)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.AbstractCompactionStrategy.worthDroppingTombstones(AbstractCompactionStrategy.java:403)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.findDroppableSSTable(LeveledCompactionStrategy.java:412)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getNextBackgroundTask(LeveledCompactionStrategy.java:101)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.WrappingCompactionStrategy.getNextBackgroundTask(WrappingCompactionStrategy.java:88)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:250)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_74]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
[na:1.8.0_74]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_74]
ERROR [CompactionExecutor:13996] 2016-05-26 21:21:46,702 
CassandraDaemon.java:185 - Exception in thread 
Thread[CompactionExecutor:13996,1,main]
java.lang.AssertionError: Memory was freed
        at 
org.apache.cassandra.io.util.SafeMemory.checkBounds(SafeMemory.java:103) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.io.util.Memory.getInt(Memory.java:292) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.getPositionInSummary(IndexSummary.java:148)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.fillTemporaryKey(IndexSummary.java:162)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.binarySearch(IndexSummary.java:121)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.getSampleIndexesForRanges(SSTableReader.java:1398)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.estimatedKeysForRanges(SSTableReader.java:1354)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.AbstractCompactionStrategy.worthDroppingTombstones(AbstractCompactionStrategy.java:403)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.findDroppableSSTable(LeveledCompactionStrategy.java:412)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getNextBackgroundTask(LeveledCompactionStrategy.java:101)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.WrappingCompactionStrategy.getNextBackgroundTask(WrappingCompactionStrategy.java:88)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:250)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_74]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
[na:1.8.0_74]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_74]
{code}

  was:
We have Cassandra cluster 2.2.5 with two datacenters(3 nodes each).
We observe ERRORs below on all nodes. The ERROR is repeated every minute. 

No any complains from customers. Do we have any chance to fix it?

{code}
ERROR [CompactionExecutor:13996] 2016-05-26 21:20:46,700 
CassandraDaemon.java:185 - Exception in thread 
Thread[CompactionExecutor:13996,1,main]
java.lang.AssertionError: Memory was freed
        at 
org.apache.cassandra.io.util.SafeMemory.checkBounds(SafeMemory.java:103) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.io.util.Memory.getInt(Memory.java:292) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.getPositionInSummary(IndexSummary.java:148)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.fillTemporaryKey(IndexSummary.java:162)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.binarySearch(IndexSummary.java:121)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.getSampleIndexesForRanges(SSTableReader.java:1398)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.estimatedKeysForRanges(SSTableReader.java:1354)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.AbstractCompactionStrategy.worthDroppingTombstones(AbstractCompactionStrategy.java:403)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.findDroppableSSTable(LeveledCompactionStrategy.java:412)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getNextBackgroundTask(LeveledCompactionStrategy.java:101)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.WrappingCompactionStrategy.getNextBackgroundTask(WrappingCompactionStrategy.java:88)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:250)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_74]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
[na:1.8.0_74]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_74]
ERROR [CompactionExecutor:13996] 2016-05-26 21:21:46,702 
CassandraDaemon.java:185 - Exception in thread 
Thread[CompactionExecutor:13996,1,main]
java.lang.AssertionError: Memory was freed
        at 
org.apache.cassandra.io.util.SafeMemory.checkBounds(SafeMemory.java:103) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at org.apache.cassandra.io.util.Memory.getInt(Memory.java:292) 
~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.getPositionInSummary(IndexSummary.java:148)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.fillTemporaryKey(IndexSummary.java:162)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.IndexSummary.binarySearch(IndexSummary.java:121)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.getSampleIndexesForRanges(SSTableReader.java:1398)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.io.sstable.format.SSTableReader.estimatedKeysForRanges(SSTableReader.java:1354)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.AbstractCompactionStrategy.worthDroppingTombstones(AbstractCompactionStrategy.java:403)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.findDroppableSSTable(LeveledCompactionStrategy.java:412)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getNextBackgroundTask(LeveledCompactionStrategy.java:101)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.WrappingCompactionStrategy.getNextBackgroundTask(WrappingCompactionStrategy.java:88)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:250)
 ~[apache-cassandra-2.2.5.jar:2.2.5]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
~[na:1.8.0_74]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
~[na:1.8.0_74]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
[na:1.8.0_74]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_74]
{code}


> Exception in thread Thread[CompactionExecutor:13358,1,main] 
> java.lang.AssertionError: Memory was freed
> ------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-11904
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11904
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Compaction
>            Reporter: Valentin Martinjuk
>
> We have Cassandra cluster 2.2.5 with two datacenters(3 nodes each).
> We observe ERRORs below on all nodes. The ERROR is repeated every minute. 
> No any complains from customers. Do we have any chance to fix it without 
> restart?
> {code}
> ERROR [CompactionExecutor:13996] 2016-05-26 21:20:46,700 
> CassandraDaemon.java:185 - Exception in thread 
> Thread[CompactionExecutor:13996,1,main]
> java.lang.AssertionError: Memory was freed
>         at 
> org.apache.cassandra.io.util.SafeMemory.checkBounds(SafeMemory.java:103) 
> ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at org.apache.cassandra.io.util.Memory.getInt(Memory.java:292) 
> ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.IndexSummary.getPositionInSummary(IndexSummary.java:148)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.IndexSummary.fillTemporaryKey(IndexSummary.java:162)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.IndexSummary.binarySearch(IndexSummary.java:121)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.format.SSTableReader.getSampleIndexesForRanges(SSTableReader.java:1398)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.format.SSTableReader.estimatedKeysForRanges(SSTableReader.java:1354)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy.worthDroppingTombstones(AbstractCompactionStrategy.java:403)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.findDroppableSSTable(LeveledCompactionStrategy.java:412)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getNextBackgroundTask(LeveledCompactionStrategy.java:101)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.WrappingCompactionStrategy.getNextBackgroundTask(WrappingCompactionStrategy.java:88)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:250)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> ~[na:1.8.0_74]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
> ~[na:1.8.0_74]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  ~[na:1.8.0_74]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  [na:1.8.0_74]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_74]
> ERROR [CompactionExecutor:13996] 2016-05-26 21:21:46,702 
> CassandraDaemon.java:185 - Exception in thread 
> Thread[CompactionExecutor:13996,1,main]
> java.lang.AssertionError: Memory was freed
>         at 
> org.apache.cassandra.io.util.SafeMemory.checkBounds(SafeMemory.java:103) 
> ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at org.apache.cassandra.io.util.Memory.getInt(Memory.java:292) 
> ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.IndexSummary.getPositionInSummary(IndexSummary.java:148)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.IndexSummary.fillTemporaryKey(IndexSummary.java:162)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.IndexSummary.binarySearch(IndexSummary.java:121)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.format.SSTableReader.getSampleIndexesForRanges(SSTableReader.java:1398)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.io.sstable.format.SSTableReader.estimatedKeysForRanges(SSTableReader.java:1354)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.AbstractCompactionStrategy.worthDroppingTombstones(AbstractCompactionStrategy.java:403)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.findDroppableSSTable(LeveledCompactionStrategy.java:412)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.LeveledCompactionStrategy.getNextBackgroundTask(LeveledCompactionStrategy.java:101)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.WrappingCompactionStrategy.getNextBackgroundTask(WrappingCompactionStrategy.java:88)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> org.apache.cassandra.db.compaction.CompactionManager$BackgroundCompactionCandidate.run(CompactionManager.java:250)
>  ~[apache-cassandra-2.2.5.jar:2.2.5]
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
> ~[na:1.8.0_74]
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
> ~[na:1.8.0_74]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>  ~[na:1.8.0_74]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>  [na:1.8.0_74]
>         at java.lang.Thread.run(Thread.java:745) [na:1.8.0_74]
> {code}



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