- Does this occur only during compaction or at seemingly random times? - How large is your heap? What jvm settings are you using? How much physical RAM do you have? - Do you have the row and/or key cache enabled? How are they configured? How large are they when the OOM is thrown?
On 03/04/2011 02:38 PM, Mark Miller wrote: > 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) >
