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From "B. Todd Burruss (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-866) AssertionError SSTableSliceIterator.java:126
Date Fri, 26 Mar 2010 20:16:27 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12850332#action_12850332
] 

B. Todd Burruss commented on CASSANDRA-866:
-------------------------------------------

all of my queries are the same - i'm doing straight get, put, deletes.  one column family,
one column.  get a "bucket" of data, put a "bucket" of data.

i don't know which ones are working at which ones don't.  i haven't tried correlating the
AssertionError back to a particular request.  i can say that not all gets fail.

last night i saw a bunch of AssertionErrors and then eventually the node OOM exception.  what
assertion is failing?

here's my column family definition.

      <ColumnFamily CompareWith="BytesType" Name="bucket"
                    RowsCached="20%"
                    KeysCached="0%"
                    />


> AssertionError SSTableSliceIterator.java:126
> --------------------------------------------
>
>                 Key: CASSANDRA-866
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-866
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.6
>            Reporter: B. Todd Burruss
>             Fix For: 0.6
>
>
> also seeing these, using cassandra-0.6.0-beta2/
> 2010-03-09 07:37:57,683 ERROR [ROW-READ-STAGE:77] [CassandraDaemon.java:78] Fatal exception
in thread Thread[ROW-READ-STAGE:77,5,main]
> java.lang.AssertionError
>         at org.apache.cassandra.db.filter.SSTableSliceIterator$ColumnGroupReader.<init>(SSTableSliceIterator.java:126)
>         at org.apache.cassandra.db.filter.SSTableSliceIterator.<init>(SSTableSliceIterator.java:59)
>         at org.apache.cassandra.db.filter.SliceQueryFilter.getSSTableColumnIterator(SliceQueryFilter.java:63)
>         at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:851)
>         at org.apache.cassandra.db.ColumnFamilyStore.cacheRow(ColumnFamilyStore.java:748)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:773)
>         at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:740)
>         at org.apache.cassandra.db.Table.getRow(Table.java:381)
>         at org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:56)
>         at org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:80)
>         at org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:40)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:619)

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