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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Out of memory error in cassandra
Date Tue, 12 Jul 2011 17:42:41 GMT
Have you seen http://www.datastax.com/docs/0.8/troubleshooting/index#nodes-are-dying-with-oom-errors
?

On Mon, Jul 11, 2011 at 1:55 PM, Anurag Gujral <anurag.gujral@gmail.com> wrote:
> Hi All,
>            I am getting following error from cassandra:
> ERROR [ReadStage:23] 2011-07-10 17:19:18,300
> DebuggableThreadPoolExecutor.java (line 103) Error in ThreadPoolExecutor
> java.lang.OutOfMemoryError: Java heap space
>         at
> org.apache.cassandra.utils.BloomFilterSerializer.deserialize(BloomFilterSerializer.java:49)
>         at
> org.apache.cassandra.utils.BloomFilterSerializer.deserialize(BloomFilterSerializer.java:30)
>         at
> org.apache.cassandra.io.sstable.IndexHelper.defreezeBloomFilter(IndexHelper.java:117)
>         at
> org.apache.cassandra.io.sstable.IndexHelper.defreezeBloomFilter(IndexHelper.java:94)
>         at
> org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:107)
>         at
> org.apache.cassandra.db.columniterator.SSTableNamesIterator.<init>(SSTableNamesIterator.java:72)
>         at
> org.apache.cassandra.db.filter.NamesQueryFilter.getSSTableColumnIterator(NamesQueryFilter.java:59)
>         at
> org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
>         at
> org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1311)
>         at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1203)
>         at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
>         at org.apache.cassandra.db.Table.getRow(Table.java:333)
>         at
> org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:60)
>         at
> org.apache.cassandra.db.ReadVerbHandler.doVerb(ReadVerbHandler.java:69)
>         at
> org.apache.cassandra.net.MessageDeliveryTask.run(MessageDeliveryTask.java:72)
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>         at java.lang.Thread.run(Thread.java:636)
>  INFO [ScheduledTasks:1] 2011-07-10 17:19:18,306 StatusLogger.java (line 66)
> RequestResponseStage              0         0
> ERROR [ReadStage:23] 2011-07-10 17:19:18,306 AbstractCassandraDaemon.java
> (line 114) Fatal exception in thread Thread[ReadStage:23,5,main]
> java.lang.OutOfMemoryError: Java heap space
>         at
> org.apache.cassandra.utils.BloomFilterSerializer.deserialize(BloomFilterSerializer.java:49)
>         at
> org.apache.cassandra.utils.BloomFilterSerializer.deserialize(BloomFilterSerializer.java:30)
>         at
> org.apache.cassandra.io.sstable.IndexHelper.defreezeBloomFilter(IndexHelper.java:117)
>         at
> org.apache.cassandra.io.sstable.IndexHelper.defreezeBloomFilter(IndexHelper.java:94)
>         at
> org.apache.cassandra.db.columniterator.SSTableNamesIterator.read(SSTableNamesIterator.java:107)
>         at
> org.apache.cassandra.db.columniterator.SSTableNamesIterator.<init>(SSTableNamesIterator.java:72)
>         at
> org.apache.cassandra.db.filter.NamesQueryFilter.getSSTableColumnIterator(NamesQueryFilter.java:59)
>         at
> org.apache.cassandra.db.filter.QueryFilter.getSSTableColumnIterator(QueryFilter.java:80)
>         at
> org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1311)
>         at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1203)
>         at
> org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
>
>
> Can someone please help debug this? The maximum heap size is 28G .
>
> I am not sure why cassandra is giving Out of memory error here.
>
> Thanks
> Anurag
>



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

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