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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Runtime exception
Date Tue, 25 Oct 2011 17:47:22 GMT
Are you using the StorageProxy API directly?

On Tue, Oct 25, 2011 at 12:39 PM, Andy Stec <andystec@gmail.com> wrote:
> We're using version 1.0.  The following exception shows up in the system log
> periodically.  What might be causing this exception?  Attached is the full
> system.log.
>
> Thanks,
>
> Andy
>
>
> 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
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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