[ 
https://issues.apache.org/jira/browse/DRILL-5522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Robert Hou resolved DRILL-5522.
-------------------------------
    Resolution: Fixed

This has been resolved.

> OOM during the merge and spill process of the managed external sort
> -------------------------------------------------------------------
>
>                 Key: DRILL-5522
>                 URL: https://issues.apache.org/jira/browse/DRILL-5522
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Relational Operators
>    Affects Versions: 1.10.0
>            Reporter: Rahul Challapalli
>            Assignee: Paul Rogers
>         Attachments: 26e334aa-1afa-753f-3afe-862f76b80c18.sys.drill, 
> drillbit.log, drillbit.out, drill-env.sh
>
>
> git.commit.id.abbrev=1e0a14c
> The below query fails with an OOM
> {code}
> ALTER SESSION SET `exec.sort.disable_managed` = false;
> alter session set `planner.memory.max_query_memory_per_node` = 1552428800;
> create table dfs.drillTestDir.xsort_ctas3_multiple partition by (type, aCol) 
> as select type, rptds, rms, s3.rms.a aCol, uid from (
>   select * from (
>     select s1.type type, flatten(s1.rms.rptd) rptds, s1.rms, s1.uid
>     from (
>       select d.type type, d.uid uid, flatten(d.map.rm) rms from 
> dfs.`/drill/testdata/resource-manager/nested-large.json` d order by d.uid
>     ) s1
>   ) s2
>   order by s2.rms.mapid, s2.rptds.a
> ) s3;
> {code}
> Stack trace
> {code}
> 2017-05-17 15:15:35,027 [26e334aa-1afa-753f-3afe-862f76b80c18:frag:4:2] INFO  
> o.a.d.e.w.fragment.FragmentExecutor - User Error Occurred: One or more nodes 
> ran out of memory while executing the query. (Unable to allocate buffer of 
> size 2097152 due to memory limit. Current allocation: 29229064)
> org.apache.drill.common.exceptions.UserException: RESOURCE ERROR: One or more 
> nodes ran out of memory while executing the query.
> Unable to allocate buffer of size 2097152 due to memory limit. Current 
> allocation: 29229064
> [Error Id: 619e2e34-704c-4964-a354-1348fb33ce8a ]
>         at 
> org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:544)
>  ~[drill-common-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:244)
>  [drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
>  [drill-common-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>  [na:1.7.0_111]
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>  [na:1.7.0_111]
>         at java.lang.Thread.run(Thread.java:745) [na:1.7.0_111]
> Caused by: org.apache.drill.exec.exception.OutOfMemoryException: Unable to 
> allocate buffer of size 2097152 due to memory limit. Current allocation: 
> 29229064
>         at 
> org.apache.drill.exec.memory.BaseAllocator.buffer(BaseAllocator.java:220) 
> ~[drill-memory-base-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.memory.BaseAllocator.buffer(BaseAllocator.java:195) 
> ~[drill-memory-base-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.vector.BigIntVector.reAlloc(BigIntVector.java:212) 
> ~[vector-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.vector.BigIntVector.copyFromSafe(BigIntVector.java:324) 
> ~[vector-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.vector.NullableBigIntVector.copyFromSafe(NullableBigIntVector.java:367)
>  ~[vector-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.vector.NullableBigIntVector$TransferImpl.copyValueSafe(NullableBigIntVector.java:328)
>  ~[vector-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.vector.complex.RepeatedMapVector$RepeatedMapTransferPair.copyValueSafe(RepeatedMapVector.java:360)
>  ~[vector-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.vector.complex.MapVector$MapTransferPair.copyValueSafe(MapVector.java:220)
>  ~[vector-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.vector.complex.MapVector.copyFromSafe(MapVector.java:82)
>  ~[vector-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.test.generated.PriorityQueueCopierGen49.doCopy(PriorityQueueCopierTemplate.java:34)
>  ~[na:na]
>         at 
> org.apache.drill.exec.test.generated.PriorityQueueCopierGen49.next(PriorityQueueCopierTemplate.java:76)
>  ~[na:na]
>         at 
> org.apache.drill.exec.physical.impl.xsort.managed.CopierHolder$BatchMerger.next(CopierHolder.java:234)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.xsort.managed.ExternalSortBatch.mergeSpilledRuns(ExternalSortBatch.java:1214)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.xsort.managed.ExternalSortBatch.load(ExternalSortBatch.java:689)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.xsort.managed.ExternalSortBatch.innerNext(ExternalSortBatch.java:559)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:162)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:215)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.svremover.RemovingRecordBatch.innerNext(RemovingRecordBatch.java:93)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:162)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:215)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:104) 
> ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.SingleSenderCreator$SingleSenderRootExec.innerNext(SingleSenderCreator.java:92)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:94) 
> ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:234)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at 
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:227)
>  ~[drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         at java.security.AccessController.doPrivileged(Native Method) 
> ~[na:1.7.0_111]
>         at javax.security.auth.Subject.doAs(Subject.java:415) ~[na:1.7.0_111]
>         at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1595)
>  ~[hadoop-common-2.7.0-mapr-1607.jar:na]
>         at 
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:227)
>  [drill-java-exec-1.11.0-SNAPSHOT.jar:1.11.0-SNAPSHOT]
>         ... 4 common frames omitted
> {code}
> I attached the logs and the profile files. The data set is too large to 
> attach here



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