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From "Nikolai Grigoriev (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-5256) "Memory was freed" AssertionError During Major Compaction
Date Wed, 29 Oct 2014 15:29:35 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-5256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Nikolai Grigoriev updated CASSANDRA-5256:
-----------------------------------------
    Attachment:     (was: cassandra.yaml)

> "Memory was freed" AssertionError During Major Compaction
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-5256
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5256
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.2.0
>         Environment: Linux ashbdrytest01p 3.2.0-37-generic #58-Ubuntu SMP Thu Jan 24
15:28:10 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
> java version "1.6.0_30"
> Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
> Java HotSpot(TM) 64-Bit Server VM (build 20.5-b03, mixed mode)
> Ubuntu 12.04.2 LTS
>            Reporter: C. Scott Andreas
>            Assignee: Jonathan Ellis
>            Priority: Critical
>              Labels: compaction
>             Fix For: 1.2.2
>
>         Attachments: 5256-v2.txt, 5256-v4.txt, 5256-v5.txt, 5256.txt
>
>
> When initiating a major compaction with `./nodetool -h localhost compact`, an AssertionError
is thrown in the CompactionExecutor from o.a.c.io.util.Memory:
> ERROR [CompactionExecutor:41495] 2013-02-14 14:38:35,720 CassandraDaemon.java (line 133)
Exception in thread Thread[CompactionExecutor:41495,1,RMI Runtime]
> java.lang.AssertionError: Memory was freed
>   at org.apache.cassandra.io.util.Memory.checkPosition(Memory.java:146)
> 	at org.apache.cassandra.io.util.Memory.getLong(Memory.java:116)
> 	at org.apache.cassandra.io.compress.CompressionMetadata.chunkFor(CompressionMetadata.java:176)
> 	at org.apache.cassandra.io.compress.CompressedRandomAccessReader.reBuffer(CompressedRandomAccessReader.java:88)
> 	at org.apache.cassandra.io.util.RandomAccessReader.read(RandomAccessReader.java:327)
> 	at java.io.RandomAccessFile.readInt(RandomAccessFile.java:755)
> 	at java.io.RandomAccessFile.readLong(RandomAccessFile.java:792)
> 	at org.apache.cassandra.utils.BytesReadTracker.readLong(BytesReadTracker.java:114)
> 	at org.apache.cassandra.db.ColumnSerializer.deserializeColumnBody(ColumnSerializer.java:101)
> 	at org.apache.cassandra.db.OnDiskAtom$Serializer.deserializeFromSSTable(OnDiskAtom.java:92)
> 	at org.apache.cassandra.db.ColumnFamilySerializer.deserializeColumnsFromSSTable(ColumnFamilySerializer.java:149)
> 	at org.apache.cassandra.io.sstable.SSTableIdentityIterator.getColumnFamilyWithColumns(SSTableIdentityIterator.java:235)
> 	at org.apache.cassandra.db.compaction.PrecompactedRow.merge(PrecompactedRow.java:109)
> 	at org.apache.cassandra.db.compaction.PrecompactedRow.<init>(PrecompactedRow.java:93)
> 	at org.apache.cassandra.db.compaction.CompactionController.getCompactedRow(CompactionController.java:162)
> 	at org.apache.cassandra.db.compaction.CompactionIterable$Reducer.getReduced(CompactionIterable.java:76)
> 	at org.apache.cassandra.db.compaction.CompactionIterable$Reducer.getReduced(CompactionIterable.java:57)
> 	at org.apache.cassandra.utils.MergeIterator$ManyToOne.consume(MergeIterator.java:114)
> 	at org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:97)
> 	at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
> 	at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
> 	at org.apache.cassandra.db.compaction.CompactionTask.runWith(CompactionTask.java:158)
> 	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.execute(CompactionTask.java:71)
> 	at org.apache.cassandra.db.compaction.CompactionManager$6.runMayThrow(CompactionManager.java:342)
> 	at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:662)
> ---
> I've invoked the `nodetool compact` three times; this occurred after each. The node has
been up for a couple days accepting writes and has not been restarted.
> Here's the server's log since it was started a few days ago: https://gist.github.com/cscotta/4956472/raw/95e7cbc68de1aefaeca11812cbb98d5d46f534e8/cassandra.log
> Here's the code being used to issue writes to the datastore: https://gist.github.com/cscotta/20cbd36c2503c71d06e9
> ---
> Configuration: One node, one keyspace, one column family. ~60 writes/second of data with
a TTL of 86400, zero reads. Stock cassandra.yaml.
> Keyspace DDL:
> create keyspace jetpack;
> use jetpack;
> create column family Metrics with key_validation_class = 'UTF8Type' and comparator =
'IntegerType';



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