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Date: Thu, 10 Mar 2011 10:05:00 +0000 (UTC)
From: "Sylvain Lebresne (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] Commented: (CASSANDRA-2104) IndexOutOfBoundsException during
 lazy row compaction of supercolumns
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    [ https://issues.apache.org/jira/browse/CASSANDRA-2104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13005015#comment-13005015 ] 

Sylvain Lebresne commented on CASSANDRA-2104:
---------------------------------------------

Can you open a new ticket with the description of the problem then. If you're at liberty to attach an bad sstable to reproduce the problem, that would clearly help.

> IndexOutOfBoundsException during lazy row compaction of supercolumns
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-2104
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2104
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7.0
>            Reporter: Daniel Lundin
>            Assignee: Sylvain Lebresne
>             Fix For: 0.7.3
>
>         Attachments: 0001-Use-the-right-comparator-when-deserializing-superCol.patch, Unit-test.patch
>
>   Original Estimate: 8h
>  Remaining Estimate: 8h
>
> I ran into an exception when lazily compacting wide rows of TimeUUID columns.
> It seems to trigger when a row is larger than {{in_memory_compaction_limit_in_mb}}.
> Traceback:
> {noformat}
>  INFO [CompactionExecutor:1] 2011-02-03 10:59:59,262 CompactionIterator.java (line 135) Compacting large row XXXXXXXXXXXXX (76999384 bytes) incrementally
>  ERROR [CompactionExecutor:1] 2011-02-03 10:59:59,266 AbstractCassandraDaemon.java (line 114) Fatal exception in thread T
>  hread[CompactionExecutor:1,1,main]
>  java.lang.IndexOutOfBoundsException
>          at java.nio.Buffer.checkIndex(Buffer.java:514)
>          at java.nio.HeapByteBuffer.get(HeapByteBuffer.java:121)
>          at org.apache.cassandra.db.marshal.TimeUUIDType.compareTimestampBytes(TimeUUIDType.java:56)
>          at org.apache.cassandra.db.marshal.TimeUUIDType.compare(TimeUUIDType.java:45)
>          at org.apache.cassandra.db.marshal.TimeUUIDType.compare(TimeUUIDType.java:29)
>          at java.util.concurrent.ConcurrentSkipListMap$ComparableUsingComparator.compareTo(ConcurrentSkipListMap.java:606
>  )
>          at java.util.concurrent.ConcurrentSkipListMap.findPredecessor(ConcurrentSkipListMap.java:685)
>          at java.util.concurrent.ConcurrentSkipListMap.doPut(ConcurrentSkipListMap.java:864)
>          at java.util.concurrent.ConcurrentSkipListMap.putIfAbsent(ConcurrentSkipListMap.java:1893)
>          at org.apache.cassandra.db.SuperColumn.addColumn(SuperColumn.java:170)
>          at org.apache.cassandra.db.SuperColumn.putColumn(SuperColumn.java:195)
>          at org.apache.cassandra.db.ColumnFamily.addColumn(ColumnFamily.java:221)
>          at org.apache.cassandra.io.LazilyCompactedRow$LazyColumnIterator.reduce(LazilyCompactedRow.java:204)
>          at org.apache.cassandra.io.LazilyCompactedRow$LazyColumnIterator.reduce(LazilyCompactedRow.java:185)
>          at org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:62)
>          at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
>          at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
>          at com.google.common.collect.Iterators$7.computeNext(Iterators.java:604)
>          at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
>          at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
>          at org.apache.cassandra.db.ColumnIndexer.serializeInternal(ColumnIndexer.java:76)
>          at org.apache.cassandra.db.ColumnIndexer.serialize(ColumnIndexer.java:50)
>          at org.apache.cassandra.io.LazilyCompactedRow.<init>(LazilyCompactedRow.java:88)
>          at org.apache.cassandra.io.CompactionIterator.getCompactedRow(CompactionIterator.java:137)
>          at org.apache.cassandra.io.CompactionIterator.getReduced(CompactionIterator.java:108)
>          at org.apache.cassandra.io.CompactionIterator.getReduced(CompactionIterator.java:43)
>          at org.apache.cassandra.utils.ReducingIterator.computeNext(ReducingIterator.java:73)
>          at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:136)
>          at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:131)
>          at org.apache.commons.collections.iterators.FilterIterator.setNextObject(FilterIterator.java:183)
>          at org.apache.commons.collections.iterators.FilterIterator.hasNext(FilterIterator.java:94)
>          at org.apache.cassandra.db.CompactionManager.doCompaction(CompactionManager.java:426)
>          at org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:122)
>          at org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:92)
>          at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>          at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>          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)
> {noformat}

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