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Posted to issues@drill.apache.org by "Jacques Nadeau (JIRA)" <ji...@apache.org> on 2015/04/30 20:07:06 UTC
[jira] [Commented] (DRILL-2921) Query with a mix of distinct and
not distinct scalar aggregates runs out of memory
[ https://issues.apache.org/jira/browse/DRILL-2921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14521961#comment-14521961 ]
Jacques Nadeau commented on DRILL-2921:
---------------------------------------
[~vicky], can you provide the plan. I think the issue with memory is due to the fact that this actually becomes a massive set of joins (since our current aggregate doesn't support multiple count distinct).
> Query with a mix of distinct and not distinct scalar aggregates runs out of memory
> ----------------------------------------------------------------------------------
>
> Key: DRILL-2921
> URL: https://issues.apache.org/jira/browse/DRILL-2921
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 0.9.0
> Reporter: Victoria Markman
> Assignee: Chris Westin
> Attachments: alltypes, drillbit-drill-2921.log, plan-drill-2921.txt
>
>
> Query below fails with NULL pointer exception.
> This bug is a request to investigate why 8GB of direct memory is not enough to execute this query.
> General enhancement to fail properly when running out of memory is addressed in DRILL-2920
> Query below was executed on a single node with direct memory of 8GB and planner.slice_target = 1. Table size is 100 rows (parquet file)
> Increasing direct memory to 20GB allowed query to finish and return results.
> Failing query:
> {code}
> select
> count(*),
> count(distinct c_varchar),
> count(c_varchar),
> count(distinct c_integer),
> count(c_integer),
> count(distinct c_bigint),
> count(c_bigint),
> count(distinct c_smalldecimal),
> count(c_smalldecimal),
> count(distinct c_bigdecimal),
> count(c_bigdecimal),
> count(distinct c_float),
> count(c_float),
> count(distinct c_date),
> count(c_date),
> count(distinct c_time),
> count(c_time),
> count(distinct c_timestamp),
> count(c_timestamp),
> count(distinct c_boolean),
> count(c_boolean)
> from
> alltypes
> ;
> {code}
> Exception in drillbit.log:
> {code}
> [6e59caeb-a5f5-45f0-80db-58d220f87306 on atsqa4-133.qa.lab:31010]
> org.apache.drill.common.exceptions.UserException: SYSTEM ERROR: null
> Fragment 19:2
> [6e59caeb-a5f5-45f0-80db-58d220f87306 on atsqa4-133.qa.lab:31010]
> at org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:465) ~[drill-common-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:262) [drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:232) [drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_71]
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_71]
> at java.lang.Thread.run(Thread.java:745) [na:1.7.0_71]
> Caused by: java.lang.NullPointerException: null
> at org.apache.drill.exec.vector.IntVector.allocateNew(IntVector.java:164) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.test.generated.HashTableGen16.allocMetadataVector(HashTableTemplate.java:746) ~[na:na]
> at org.apache.drill.exec.test.generated.HashTableGen16.setup(HashTableTemplate.java:461) ~[na:na]
> at org.apache.drill.exec.physical.impl.common.ChainedHashTable.createAndSetupHashTable(ChainedHashTable.java:223) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.test.generated.HashAggregatorGen0.setup(HashAggTemplate.java:269) ~[na:na]
> at org.apache.drill.exec.physical.impl.aggregate.HashAggBatch.createAggregatorInternal(HashAggBatch.java:234) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.aggregate.HashAggBatch.createAggregator(HashAggBatch.java:157) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.aggregate.HashAggBatch.buildSchema(HashAggBatch.java:101) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:132) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:118) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:101) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:91) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.aggregate.StreamingAggBatch.buildSchema(StreamingAggBatch.java:99) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:132) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.validate.IteratorValidatorBatchIterator.next(IteratorValidatorBatchIterator.java:118) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:74) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.SingleSenderCreator$SingleSenderRootExec.innerNext(SingleSenderCreator.java:91) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:64) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:199) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at org.apache.drill.exec.work.fragment.FragmentExecutor$1.run(FragmentExecutor.java:193) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> at java.security.AccessController.doPrivileged(Native Method) ~[na:1.7.0_71]
> at javax.security.auth.Subject.doAs(Subject.java:415) ~[na:1.7.0_71]
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1469) ~[hadoop-common-2.4.1-mapr-1408.jar:na]
> at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:193) [drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
> ... 3 common frames omitted
> {code}
> I will attach drillbit.log, alltypes data file and explain plan.
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