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From "Jonathan Foley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4687) Exception: DecoratedKey(xxx, yyy) != DecoratedKey(zzz, kkk)
Date Sat, 28 Dec 2013 06:24:10 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13857955#comment-13857955
] 

Jonathan Foley commented on CASSANDRA-4687:
-------------------------------------------

I saw this in 2.01 writing at 800 ops/sec to a Counter CF, incremental updates on 58k rows.


ERROR [ReplicateOnWriteStage:47] 2013-12-28 04:53:00,429 CassandraDaemon.java (line 185) Exception
in thread Thread[ReplicateOnWriteStage:47,5,main]
java.lang.AssertionError: DecoratedKey(-9223372036854775808, ) != DecoratedKey(-1114982523139082887,
52656e6f) in /raid0/cassandra/data/Profiles_production_2/CityFeatures/Profile


I also saw a related error that has a different signature in that the hash seems anomalously
long:

java.lang.AssertionError: DecoratedKey(-5739285166491603123, 2d323030350480000000000000000000014336a50ee40000002400010000a85e9880587011e389a8999c37e7417d000000000000000100000000000$


> Exception: DecoratedKey(xxx, yyy) != DecoratedKey(zzz, kkk)
> -----------------------------------------------------------
>
>                 Key: CASSANDRA-4687
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4687
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: CentOS 6.3 64-bit, Oracle JRE 1.6.0.33 64-bit, single node cluster
>            Reporter: Leonid Shalupov
>            Priority: Minor
>         Attachments: 4687-debugging.txt, apache-cassandra-1.2.13-SNAPSHOT.jar, guava-backed-cache.patch
>
>
> Under heavy write load sometimes cassandra fails with assertion error.
> git bisect leads to commit 295aedb278e7a495213241b66bc46d763fd4ce66.
> works fine if global key/row caches disabled in code.
> {quote}
> java.lang.AssertionError: DecoratedKey(xxx, yyy) != DecoratedKey(zzz, kkk) in /var/lib/cassandra/data/...-he-1-Data.db
> 	at org.apache.cassandra.db.columniterator.SSTableSliceIterator.<init>(SSTableSliceIterator.java:60)
> 	at org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:67)
> 	at org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:79)
> 	at org.apache.cassandra.db.CollationController.collectAllData(CollationController.java:256)
> 	at org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:64)
> 	at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1345)
> 	at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1207)
> 	at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1142)
> 	at org.apache.cassandra.db.Table.getRow(Table.java:378)
> 	at org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:69)
> 	at org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:819)
> 	at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1253)
> 	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)
> {quote}



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