[jira] [Created] (PHOENIX-990) OOM caused by order by query returning all rows

["Mujtaba Chohan (JIRA)" <ji...@apache.org>]

Mujtaba Chohan created PHOENIX-990:
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             Summary: OOM caused by order by query returning all rows
                 Key: PHOENIX-990
                 URL: https://issues.apache.org/jira/browse/PHOENIX-990
             Project: Phoenix
          Issue Type: Bug
    Affects Versions: 3.0.0
            Reporter: Mujtaba Chohan
            Assignee: James Taylor


OOM error with the following stack trace with large number of rows for query with order by returning all rows without limit or aggregation (ex. select * from table order by col1). Created a local perf. test to verify it when this gets fixed. Also performance.py script can be used to generate a few mil. rows.

Originally reported by @zenmehra.

Stack:
ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed openScanner
org.apache.hadoop.hbase.DoNotRetryIOException: PERFORMANCE_5000000,,1400524730456.c62cccdac8cffd098d236f5e282564bb.: java.io.IOException: Map failed
	at org.apache.phoenix.util.ServerUtil.throwIOException(ServerUtil.java:73)
	at org.apache.phoenix.coprocessor.ScanRegionObserver.getTopNScanner(ScanRegionObserver.java:221)
	at org.apache.phoenix.coprocessor.ScanRegionObserver.doPostScannerOpen(ScanRegionObserver.java:197)
	at org.apache.phoenix.coprocessor.BaseScannerRegionObserver.postScannerOpen(BaseScannerRegionObserver.java:66)
	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postScannerOpen(RegionCoprocessorHost.java:1316)
	at org.apache.hadoop.hbase.regionserver.HRegionServer.internalOpenScanner(HRegionServer.java:2573)
	at org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:2541)
	at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:323)
	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1426)
Caused by: java.lang.RuntimeException: java.io.IOException: Map failed
	at org.apache.phoenix.iterate.MappedByteBufferSortedQueue.offer(MappedByteBufferSortedQueue.java:73)
	at org.apache.phoenix.iterate.MappedByteBufferSortedQueue.offer(MappedByteBufferSortedQueue.java:43)
	at java.util.AbstractQueue.add(AbstractQueue.java:68)
	at org.apache.phoenix.iterate.OrderedResultIterator.getResultIterator(OrderedResultIterator.java:224)
	at org.apache.phoenix.iterate.OrderedResultIterator.next(OrderedResultIterator.java:169)
	at org.apache.phoenix.coprocessor.ScanRegionObserver.getTopNScanner(ScanRegionObserver.java:216)
	... 10 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:299)
	at org.apache.phoenix.iterate.MappedByteBufferSortedQueue.offer(MappedByteBufferSortedQueue.java:65)
	... 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)



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