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Posted to commits@cassandra.apache.org by "Sylvain Lebresne (Commented) (JIRA)" <ji...@apache.org> on 2011/10/26 11:47:33 UTC
[jira] [Commented] (CASSANDRA-3402) Runtime exception thrown
periodically under load
[ https://issues.apache.org/jira/browse/CASSANDRA-3402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13135833#comment-13135833 ]
Sylvain Lebresne commented on CASSANDRA-3402:
---------------------------------------------
A few questions to help narrow it down:
* Do you have assertion enables on the node(s) on which you're getting this exception? You should be able to find if you do in the cassandra-env.sh (search for assertions, by default assertions are enabled so if you haven't made modifications it should be). I'm asking because there is an assertion on the write path that checks we don't write columns with a name of length 0, so if assertion are enabled and you haven't seen any assertion error in the logs, this would narrow it down quite a bit.
* You said you got this exception periodically. Does the exception always says "error reading 5 of 5", or are the numbers different sometimes?
* I don't suppose you've find a way to reproduce this easily on a blank database?
> Runtime exception thrown periodically under load
> ------------------------------------------------
>
> Key: CASSANDRA-3402
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3402
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.0
> Environment: Cassandra 1.0
> Red Hat Enterprise Linux Server 6.0
> Reporter: Andy Stec
> Assignee: Sylvain Lebresne
> Fix For: 1.0.1
>
>
> The exception listed below is thrown periodically. We're using thrift interface for C++. Jonathan Ellis requested that we open a bug for this.
> ERROR [ReadStage:1761] 2011-10-25 12:17:16,088 AbstractCassandraDaemon.java (line 133) Fatal exception in thread Thread[ReadStage:1761,5,main]
> java.lang.RuntimeException: error reading 5 of 5
> at org.apache.cassandra.db.columniterator.SimpleSliceReader.computeNext(SimpleSliceReader.java:83)
> at org.apache.cassandra.db.columniterator.SimpleSliceReader.computeNext(SimpleSliceReader.java:40)
> at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
> at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
> at org.apache.cassandra.db.columniterator.SSTableSliceIterator.hasNext(SSTableSliceIterator.java:107)
> at org.apache.cassandra.utils.MergeIterator$Candidate.advance(MergeIterator.java:145)
> at org.apache.cassandra.utils.MergeIterator$ManyToOne.advance(MergeIterator.java:124)
> at org.apache.cassandra.utils.MergeIterator$ManyToOne.computeNext(MergeIterator.java:98)
> at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:140)
> at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:135)
> at org.apache.cassandra.db.filter.SliceQueryFilter.collectReducedColumns(SliceQueryFilter.java:116)
> at org.apache.cassandra.db.filter.QueryFilter.collateColumns(QueryFilter.java:144)
> at org.apache.cassandra.db.CollationController.collectAllData(CollationController.java:225)
> at org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:61)
> at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1297)
> at org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:1128)
> at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1157)
> at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1114)
> at org.apache.cassandra.db.Table.getRow(Table.java:388)
> at org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:58)
> at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:62)
> at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:59)
> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: org.apache.cassandra.db.ColumnSerializer$CorruptColumnException: invalid column name length 0
> at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:89)
> at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:82)
> at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:72)
> at org.apache.cassandra.db.ColumnSerializer.deserialize(ColumnSerializer.java:36)
> at org.apache.cassandra.db.columniterator.SimpleSliceReader.computeNext(SimpleSliceReader.java:79)
> ... 24 more
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