[TAJO-1954] Fix memory leak in physical operator

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.10.0
• Fix Version/s: 0.12.0, 0.11.1
• Component/s: Physical Operator
• Assignee: Jinho Kim
• Reporter: Jinho Kim
• Created: 02/Nov/15 07:32
• Updated: 03/Nov/15 02:39
• Resolved: 02/Nov/15 09:45

Description

A physical operator should be closed but some operator does not call to close.

it's garbage-collected. See http://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records: 1
#1:
	io.netty.buffer.AdvancedLeakAwareByteBuf.nioBuffer(AdvancedLeakAwareByteBuf.java:673)
	org.apache.tajo.storage.RawFile$RawFileScanner.init(RawFile.java:103)
	org.apache.tajo.engine.planner.physical.SeqScanExec.initScanner(SeqScanExec.java:286)
	org.apache.tajo.engine.planner.physical.SeqScanExec.init(SeqScanExec.java:191)
	org.apache.tajo.engine.planner.physical.UnaryPhysicalExec.init(UnaryPhysicalExec.java:53)
	org.apache.tajo.engine.planner.physical.ExternalSortExec.init(ExternalSortExec.java:147)
	org.apache.tajo.engine.planner.physical.UnaryPhysicalExec.init(UnaryPhysicalExec.java:53)
	org.apache.tajo.engine.planner.physical.ColPartitionStoreExec.init(ColPartitionStoreExec.java:117)
	org.apache.tajo.worker.TaskImpl.run(TaskImpl.java:403)
	org.apache.tajo.worker.TaskContainer.run(TaskContainer.java:65)
	java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	java.util.concurrent.FutureTask.run(FutureTask.java:266)
	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	java.lang.Thread.run(Thread.java:745)

2015-10-27 14:10:05,557 ERROR: io.netty.util.ResourceLeakDetector (error(527)) - LEAK: ByteBuf.release() was not called before it's garbage-collected. See http://netty.io/wiki/reference-counted-objects.html for more information.
Recent access records: 1
#1:
	io.netty.buffer.AdvancedLeakAwareByteBuf.nioBuffer(AdvancedLeakAwareByteBuf.java:673)
	org.apache.tajo.storage.RawFile$RawFileScanner.init(RawFile.java:103)
	org.apache.tajo.engine.planner.physical.SeqScanExec.initScanner(SeqScanExec.java:286)
	org.apache.tajo.engine.planner.physical.SeqScanExec.init(SeqScanExec.java:191)
	org.apache.tajo.engine.planner.physical.UnaryPhysicalExec.init(UnaryPhysicalExec.java:53)
	org.apache.tajo.engine.planner.physical.ExternalSortExec.init(ExternalSortExec.java:147)
	org.apache.tajo.engine.planner.physical.UnaryPhysicalExec.init(UnaryPhysicalExec.java:53)
	org.apache.tajo.engine.planner.physical.AggregationExec.init(AggregationExec.java:53)
	org.apache.tajo.engine.planner.physical.DistinctGroupbySortAggregationExec.<init>(DistinctGroupbySortAggregationExec.java:73)