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From Mark Miller <static.void....@gmail.com>
Subject OOM exceptions
Date Fri, 04 Mar 2011 19:38:35 GMT
Other than adding more memory to the machine is there a way to solve 
this? Please help. Thanks

ERROR [COMPACTION-POOL:1] 2011-03-04 11:11:44,891 CassandraDaemon.java 
(line org.apache.cassandra.thrift.CassandraDaemon$1) Uncaught exception 
in thread Thread[COMPACTION-POOL:1,5,main]
java.lang.OutOfMemoryError: Java heap space
     at java.util.Arrays.copyOf(Arrays.java:2798)
     at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:111)
     at java.io.DataOutputStream.write(DataOutputStream.java:107)
     at java.io.FilterOutputStream.write(FilterOutputStream.java:97)
     at 
org.apache.cassandra.utils.FBUtilities.writeByteArray(FBUtilities.java:298)
     at 
org.apache.cassandra.db.ColumnSerializer.serialize(ColumnSerializer.java:66)
     at 
org.apache.cassandra.db.SuperColumnSerializer.serialize(SuperColumn.java:311)
     at 
org.apache.cassandra.db.SuperColumnSerializer.serialize(SuperColumn.java:284)
     at 
org.apache.cassandra.db.ColumnFamilySerializer.serializeForSSTable(ColumnFamilySerializer.java:87)
     at 
org.apache.cassandra.db.ColumnFamilySerializer.serializeWithIndexes(ColumnFamilySerializer.java:99)
     at 
org.apache.cassandra.io.CompactionIterator.getReduced(CompactionIterator.java:140)
     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:135)
     at 
com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:130)
     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:294)
     at 
org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:101)
     at 
org.apache.cassandra.db.CompactionManager$1.call(CompactionManager.java:82)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
     at java.util.concurrent.FutureTask.run(FutureTask.java:166)
     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)


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