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https://issues.apache.org/jira/browse/DRILL-1093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jacques Nadeau resolved DRILL-1093.
-----------------------------------
Resolution: Fixed
> Resource leak: ByteBuf.release() not called
> -------------------------------------------
>
> Key: DRILL-1093
> URL: https://issues.apache.org/jira/browse/DRILL-1093
> Project: Apache Drill
> Issue Type: Bug
> Affects Versions: 0.4.0
> Reporter: Sudheesh Katkam
> Assignee: Jacques Nadeau
> Fix For: 0.5.0
>
>
> 0: jdbc:drill:zk=local> SELECT * FROM cp.`employee.json` LIMIT 20;
> 16:10:39.711 [10a4550e-24cc-44dc-96dc-fe38ad9abb0a:frag:0:0 - Producer
> Thread] ERROR io.netty.util.ResourceLeakDetector - LEAK: ByteBuf.release()
> was not called before it's garbage-collected. Enable advanced leak reporting
> to find out where the leak occurred. To enable advanced leak reporting,
> specify the JVM option '-Dio.netty.leakDetectionLevel=advanced' or call
> ResourceLeakDetector.setLevel()
> *Here's what I get when I set the level to advanced:*
> 16:02:34.268 [c52b9de5-8043-4ba4-a6bc-57df791b9885:frag:0:0 - Producer
> Thread] ERROR io.netty.util.ResourceLeakDetector - LEAK: ByteBuf.release()
> was not called before it's garbage-collected.
> Recent access records: 2
> #2:
>
> io.netty.buffer.AdvancedLeakAwareByteBuf.getBytes(AdvancedLeakAwareByteBuf.java:211)
>
> org.apache.drill.exec.vector.VarCharVector$Mutator.setSafe(VarCharVector.java:494)
>
> org.apache.drill.exec.vector.NullableVarCharVector$Mutator.setSafe(NullableVarCharVector.java:442)
>
> org.apache.drill.exec.vector.complex.impl.NullableVarCharWriterImpl.write(NullableVarCharWriterImpl.java:115)
>
> org.apache.drill.exec.vector.complex.fn.JsonReader.writeData(JsonReader.java:140)
>
> org.apache.drill.exec.vector.complex.fn.JsonReader.write(JsonReader.java:65)
>
> org.apache.drill.exec.vector.complex.fn.JsonReaderWithState.write(JsonReaderWithState.java:52)
>
> org.apache.drill.exec.store.easy.json.JSONRecordReader2.next(JSONRecordReader2.java:90)
> org.apache.drill.exec.physical.impl.ScanBatch.next(ScanBatch.java:138)
>
> org.apache.drill.exec.physical.impl.producer.ProducerConsumerBatch$Producer.run(ProducerConsumerBatch.java:122)
> java.lang.Thread.run(Thread.java:745)
> #1:
>
> io.netty.buffer.AdvancedLeakAwareByteBuf.setBytes(AdvancedLeakAwareByteBuf.java:319)
>
> org.apache.drill.exec.vector.complex.fn.JsonReader.writeData(JsonReader.java:136)
>
> org.apache.drill.exec.vector.complex.fn.JsonReader.write(JsonReader.java:65)
>
> org.apache.drill.exec.vector.complex.fn.JsonReaderWithState.write(JsonReaderWithState.java:52)
>
> org.apache.drill.exec.store.easy.json.JSONRecordReader2.next(JSONRecordReader2.java:90)
> org.apache.drill.exec.physical.impl.ScanBatch.next(ScanBatch.java:138)
>
> org.apache.drill.exec.physical.impl.producer.ProducerConsumerBatch$Producer.run(ProducerConsumerBatch.java:122)
> java.lang.Thread.run(Thread.java:745)
> Created at:
>
> io.netty.buffer.UnpooledByteBufAllocator.newDirectBuffer(UnpooledByteBufAllocator.java:55)
>
> io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:155)
>
> io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:146)
>
> io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:83)
>
> org.apache.drill.exec.vector.complex.fn.JsonReader.writeData(JsonReader.java:135)
>
> org.apache.drill.exec.vector.complex.fn.JsonReader.write(JsonReader.java:65)
>
> org.apache.drill.exec.vector.complex.fn.JsonReaderWithState.write(JsonReaderWithState.java:52)
>
> org.apache.drill.exec.store.easy.json.JSONRecordReader2.next(JSONRecordReader2.java:90)
> org.apache.drill.exec.physical.impl.ScanBatch.next(ScanBatch.java:138)
>
> org.apache.drill.exec.physical.impl.producer.ProducerConsumerBatch$Producer.run(ProducerConsumerBatch.java:122)
> java.lang.Thread.run(Thread.java:745)
> *This happens only on the first query on any json file.*
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