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From Skanda Prasad <skanda.ganapa...@gmail.com>
Subject OOM error
Date Fri, 13 Jun 2014 16:17:10 GMT
Hi,

When I run a group by query on a data size of approx 50 million records, I'm getting the below
oom error with phoenix-2.2.3-incubating build.

java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
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)
Caused by: java.lang.RuntimeException: java.io.IOException: Map failed
at org.apache.phoenix.iterate.MappedByteBufferSortedQueue.offer(MappedByteBufferSortedQueue.java:66)
at org.apache.phoenix.iterate.MappedByteBufferSortedQueue.offer(MappedByteBufferSortedQueue.java:36)
at java.util.AbstractQueue.add(AbstractQueue.java:68)
at org.apache.phoenix.iterate.OrderedResultIterator.getResultIterator(OrderedResultIterator.java:224)
at org.apache.phoenix.iterate.OrderedResultIterator.peek(OrderedResultIterator.java:238)
at org.apache.phoenix.iterate.MergeSortResultIterator.minIterator(MergeSortResultIterator.java:68)
at org.apache.phoenix.iterate.MergeSortResultIterator.next(MergeSortResultIterator.java:90)
at org.apache.phoenix.iterate.GroupedAggregatingResultIterator.next(GroupedAggregatingResultIterator.java:68)
at org.apache.phoenix.jdbc.PhoenixResultSet.next(PhoenixResultSet.java:731)
at com.xxxcorp.etl.action.c.a(SourceFile:54)
at com.xxxcorp.etl.action.c.call(SourceFile:25)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
... 3 more
Caused by: java.io.IOException: Map failed
at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:748)
at org.apache.phoenix.iterate.MappedByteBufferSortedQueue$MappedByteBufferPriorityQueue.writeResult(MappedByteBufferSortedQueue.java:291)
at org.apache.phoenix.iterate.MappedByteBufferSortedQueue.offer(MappedByteBufferSortedQueue.java:58)
... 15 more
Caused by: java.lang.OutOfMemoryError: Map failed
at sun.nio.ch.FileChannelImpl.map0(Native Method)
at sun.nio.ch.FileChannelImpl.map(FileChannelImpl.java:745)

-skanda
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