[
https://issues.apache.org/jira/browse/DRILL-5744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16146371#comment-16146371
]
Paul Rogers commented on DRILL-5744:
------------------------------------
The gist of this issue is this:
{code}
[265b163b-cf44-d2ff-2e70-4cd746b56611:frag:0:0]
Completed load phase: read 977 batches, spilled 19 times, total input bytes:
1,365,135,360
Starting consolidate phase. Batches = 977, Records = 4000000, Memory =
23,101,440, In-memory batches 16, spilled runs 19
Starting merge phase. Runs = 35, Alloc. memory = 2,310,1440
Unable to allocate buffer of size 4,194,304 (rounded from 3276750) due to
memory limit. Current allocation: 79986944
at
org.apache.drill.exec.record.VectorInitializer.allocateBatch(VectorInitializer.java:85)
at
org.apache.drill.exec.physical.impl.xsort.managed.PriorityQueueCopierWrapper$BatchMerger.next(PriorityQueueCopierWrapper.java:262)
at
org.apache.drill.exec.physical.impl.xsort.managed.ExternalSortBatch.load(ExternalSortBatch.java:374)
{code}
Configuration:
{code}
Config: spill file size = 268435456, spill batch size = 1048576, merge batch
size = 16777216, mSort batch size = 65535
Memory config: Allocator limit = 76,214,400
Actual batch schema & sizes {
...
Records: 4096, Total size: 1,441,792, Data size: 376,615, Gross row width: 352,
Net row width: 92, Density: 27}
Input Batch Estimates: record size = 123 bytes; net = 10776576 bytes, gross =
16164864, records = 4096
Spill batch size: net = 1048575 bytes, gross = 1572862 bytes, records = 8525;
spill file = 268435456 bytes
Output batch size: net = 8060805 bytes, gross = 12091207 bytes, records = 65535
Available memory: 76214400, buffer memory = 72020100, merge memory = 60092790
{code}
Initial analysis suggests that the sort tried to merge too many batches at the
same time and ran out of memory when trying to read a batch from disk. This
would be a bug.
> External sort fails with OOM error
> ----------------------------------
>
> Key: DRILL-5744
> URL: https://issues.apache.org/jira/browse/DRILL-5744
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 1.10.0
> Reporter: Robert Hou
> Assignee: Paul Rogers
> Fix For: 1.12.0
>
> Attachments: 265b163b-cf44-d2ff-2e70-4cd746b56611.sys.drill,
> q34.drillbit.log
>
>
> Query is:
> {noformat}
> ALTER SESSION SET `exec.sort.disable_managed` = false;
> alter session set `planner.width.max_per_node` = 1;
> alter session set `planner.disable_exchanges` = true;
> alter session set `planner.width.max_per_query` = 1;
> alter session set `planner.memory.max_query_memory_per_node` = 152428800;
> select count(*) 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
> );
> ALTER SESSION SET `exec.sort.disable_managed` = true;
> alter session set `planner.width.max_per_node` = 17;
> alter session set `planner.disable_exchanges` = false;
> alter session set `planner.width.max_per_query` = 1000;
> alter session set `planner.memory.max_query_memory_per_node` = 2147483648;
> {noformat}
> Stack trace is:
> {noformat}
> 2017-08-23 06:59:42,763 [266275e5-ebdb-14ae-d52d-00fa3a154f6d:frag:0:0] 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 4194304 (rounded from 3276750) due to memory limit. Current allocation: 7
> 9986944)
> 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 4194304 (rounded from 3276750) due to
> memory limit. Current allocation: 79986944
> [Error Id: 4f4959df-0921-4a50-b75e-56488469ab10 ]
> at
> org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:550)
> ~[drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:244)
> [drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38)
> [drill-common-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> [na:1.7.0_51]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> [na:1.7.0_51]
> at java.lang.Thread.run(Thread.java:744) [na:1.7.0_51]
> Caused by: org.apache.drill.exec.exception.OutOfMemoryException: Unable to
> allocate buffer of size 4194304 (rounded from 3276750) due to memory limit.
> Cur
> rent allocation: 79986944
> at
> org.apache.drill.exec.memory.BaseAllocator.buffer(BaseAllocator.java:238)
> ~[drill-memory-base-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.memory.BaseAllocator.buffer(BaseAllocator.java:213)
> ~[drill-memory-base-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.vector.VarCharVector.allocateNew(VarCharVector.java:402)
> ~[vector-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.vector.NullableVarCharVector.allocateNew(NullableVarCharVector.java:236)
> ~[vector-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.vector.AllocationHelper.allocatePrecomputedChildCount(AllocationHelper.java:33)
> ~[vector-1.12.0-SNAPSHOT.jar:1.12.0-SNAPS
> HOT]
> at
> org.apache.drill.exec.vector.AllocationHelper.allocate(AllocationHelper.java:46)
> ~[vector-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.VectorInitializer.allocateVector(VectorInitializer.java:113)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT
> ]
> at
> org.apache.drill.exec.record.VectorInitializer.allocateVector(VectorInitializer.java:95)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.VectorInitializer.allocateMap(VectorInitializer.java:130)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.VectorInitializer.allocateVector(VectorInitializer.java:93)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.VectorInitializer.allocateBatch(VectorInitializer.java:85)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.xsort.managed.PriorityQueueCopierWrapper$BatchMerger.next(PriorityQueueCopierWrapper.java:262)
> ~[drill-java
> -exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.xsort.managed.ExternalSortBatch.load(ExternalSortBatch.java:374)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12
> .0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.xsort.managed.ExternalSortBatch.innerNext(ExternalSortBatch.java:303)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar
> :1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.
> 0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.svremover.RemovingRecordBatch.innerNext(RemovingRecordBatch.java:93)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:
> 1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.
> 0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:133)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.1
> 2.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.aggregate.StreamingAggBatch.innerNext(StreamingAggBatch.java:151)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.1
> 2.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:119)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:109)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.
> 0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:133)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.1
> 2.0-SNAPSHOT]
> at
> org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:164)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:105)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:81)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAP
> SHOT]
> at
> org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:95)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:234)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at
> org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:227)
> ~[drill-java-exec-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> at java.security.AccessController.doPrivileged(Native Method)
> ~[na:1.7.0_51]
> at javax.security.auth.Subject.doAs(Subject.java:415) ~[na:1.7.0_51]
> 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-1.12.0-SNAPSHOT.jar:1.12.0-SNAPSHOT]
> ... 4 common frames omitted
> {noformat}
> commit-id:
> 1.12.0-SNAPSHOT e9065b55ea560e7f737d6fcb4948f9e945b9b14f
> DRILL-5660: Parquet metadata caching improvements 15.08.2017 @ 09:31:00
> PDT Unknown 15.08.2017 @ 12:02:27 PDT
> q34 single
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