[jira] [Created] (DRILL-2758) Memory leak in parquet writer when writing billions of records

["Aman Sinha (JIRA)" <ji...@apache.org>]

Aman Sinha created DRILL-2758:
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             Summary: Memory leak in parquet writer when writing billions of records
                 Key: DRILL-2758
                 URL: https://issues.apache.org/jira/browse/DRILL-2758
             Project: Apache Drill
          Issue Type: Bug
          Components: Storage - Parquet
    Affects Versions: 0.8.0
            Reporter: Aman Sinha
            Assignee: Steven Phillips


 Encountered the following memory leak when running a CTAS creating parquet data.  This is on a large data set, so I cannot provide the reproduction here.  Several billions of records are written and all fragments except 1 show FINIISHED state in the profile.  The 1 fragment that is in RUNNING state shows 0 records written.  The jstack on that node showed no activity and cpu was idle.  However, drillbit.log shows the following memory leak:  

{code}
2015-04-10 18:11:40,337 [2ad7efdb-37ad-743e-3fe4-54a9d158d843:frag:1:40] WARN  o.a.d.e.w.fragment.FragmentExecutor - Failure while closing out resources
java.lang.IllegalStateException: Attempted to close accountor with 1 buffer(s) still allocatedfor QueryId: 2ad7efdb-37ad-743e-3fe4-54a9d158d843, MajorFragmentId: 1, MinorFragmen
tId: 40.


        Total 1 allocation(s) of byte size(s): 1153433, at stack location:
                org.apache.drill.exec.memory.TopLevelAllocator$ChildAllocator.buffer(TopLevelAllocator.java:234)
                org.apache.drill.exec.store.parquet.ParquetDirectByteBufferAllocator.allocate(ParquetDirectByteBufferAllocator.java:45)
                parquet.bytes.CapacityByteArrayOutputStream.allocateSlab(CapacityByteArrayOutputStream.java:74)
                parquet.bytes.CapacityByteArrayOutputStream.initSlabs(CapacityByteArrayOutputStream.java:88)
                parquet.bytes.CapacityByteArrayOutputStream.<init>(CapacityByteArrayOutputStream.java:69)
                parquet.column.values.plain.PlainValuesWriter.<init>(PlainValuesWriter.java:48)
                parquet.column.ParquetProperties.getValuesWriter(ParquetProperties.java:109)
                parquet.column.impl.ColumnWriterImpl.<init>(ColumnWriterImpl.java:81)
                parquet.column.impl.ColumnWriteStoreImpl.newMemColumn(ColumnWriteStoreImpl.java:68)
                parquet.column.impl.ColumnWriteStoreImpl.getColumnWriter(ColumnWriteStoreImpl.java:56)
                parquet.io.MessageColumnIO$MessageColumnIORecordConsumer.<init>(MessageColumnIO.java:124)
                parquet.io.MessageColumnIO.getRecordWriter(MessageColumnIO.java:315)
                org.apache.drill.exec.store.parquet.ParquetRecordWriter.newSchema(ParquetRecordWriter.java:165)
                org.apache.drill.exec.store.parquet.ParquetRecordWriter.updateSchema(ParquetRecordWriter.java:141)
                org.apache.drill.exec.physical.impl.WriterRecordBatch.setupNewSchema(WriterRecordBatch.java:162)
                org.apache.drill.exec.physical.impl.WriterRecordBatch.innerNext(WriterRecordBatch.java:113)
                org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142)
                org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:118)
                org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:68)
                org.apache.drill.exec.physical.impl.SingleSenderCreator$SingleSenderRootExec.innerNext(SingleSenderCreator.java:99)
{code}



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