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https://issues.apache.org/jira/browse/CASSANDRA-7465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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T Jake Luciani updated CASSANDRA-7465:
--------------------------------------
Attachment: 7465.txt
I think this is the only change needed. I'm going to verify this on an ec2
cluster unless [~jasobrown] can test first
> DecoratedKey assertion error on reads
> -------------------------------------
>
> Key: CASSANDRA-7465
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7465
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: 3 nodes
> Oracle Linux Server 6.3
> kernel ver 2.6.39
> Reporter: Jason Brown
> Assignee: T Jake Luciani
> Priority: Blocker
> Fix For: 2.1.0
>
> Attachments: 7465.txt
>
>
> Getting the following exception when running read stress:
> {code}WARN [SharedPool-Worker-31] 2014-06-27 21:25:51,391
> AbstractTracingAwareExecutorService.java:166 - Uncaught exception on thread
> Thread[SharedPool-Worker-31,10,main]: {}
> java.lang.AssertionError: DecoratedKey(-5397116645141815707,
> 30303031393143364639) != DecoratedKey(-5397116645141815707,
> 30303031343439443233) in
> /u/sdd/cassandra-jasobrown/data/Keyspace1/Standard1-6ab9bd90fe3b11e385edff96c2ef2fd6/Keyspace1-Standard1-ka-73-Data.db
> at
> org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:111)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.columniterator.SSTableNamesIterator.<init>(SSTableNamesIterator.java:59)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.filter.NamesQueryFilter.getSSTableColumnIterator(NamesQueryFilter.java:89)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:62)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.CollationController.collectTimeOrderedData(CollationController.java:125)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:59)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1873)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1681)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at org.apache.cassandra.db.Keyspace.getRow(Keyspace.java:341)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:55)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:1393)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:2060)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
> ~[na:1.7.0_13]
> at
> org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:162)
> ~[apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:103)
> [apache-cassandra-2.1.0-rc2-SNAPSHOT.jar:2.1.0-rc2-SNAPSHOT]
> at java.lang.Thread.run(Thread.java:722) [na:1.7.0_13]
> {code}
> I have a three node cluster, which I populate with the following stress
> command:
> {code}
> cassandra-stress write n=60000000 -schema replication\(factor\=2\) -key
> populate=1..60000000 -rate threads=42 -mode native prepared cql3 -port
> native=9043 thrift=9161 -node athena06-a,athena06-b,athena06-c -col
> n=fixed\(21\) size=exp\(11..42\)
> {code}
> Then I run the read stress:
> {code}
> cassandra-stress read n=100000000 -key dist=extr\(1..600000000,2\) -mode
> native prepared cql3 -port native=9043 thrift=9161 -node
> athena06-b,athena06-c,athena06-a -col n=fixed\(21\) -rate threads=64
> {code}
> The above exception occurs semi-frequently (several to ~50 times a minute,
> but seems to depend on amount of data in cluster - anecdotal evidence only).
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