Rahul Challapalli created DRILL-5522: ----------------------------------------
Summary: 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 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. 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