[DRILL-1700] caught a memory assertion on an order by

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Component/s: Query Planning & Optimization
• Assignee: Chun Chang
• Reporter: Chun Chang
• Created: 12/Nov/14 23:47
• Updated: 18/Sep/15 20:16
• Resolved: 30/Dec/14 22:01

Description

#Wed Nov 12 13:06:45 EST 2014
git.commit.id.abbrev=1e21045

The following query on a 1 million row data caused a memory assertion.

0: jdbc:drill:schema=dfs> select columns[0], columns[1], columns[2] from `aggregate_1m.csv` order by cast(columns[0] as int);
--------------------------------

EXPR$0

EXPR$1

EXPR$2

--------------------------------
Query failed: Failure while running fragment.[ 7bc42b6c-c00a-41c2-af43-331655e5a178 on qa-node119.qa.lab:31010 ]

java.lang.RuntimeException: java.sql.SQLException: Failure while executing query.
at sqlline.SqlLine$IncrementalRows.hasNext(SqlLine.java:2514)
at sqlline.SqlLine$TableOutputFormat.print(SqlLine.java:2148)
at sqlline.SqlLine.print(SqlLine.java:1809)

The same query adding a limit (say limit 100) worked. Here is the assertion stack in drill bit log:

2014-11-12 15:16:22,864 [f89183d7-f94d-4ece-818f-8e597859d529:frag:0:0] WARN o.a.d.e.w.fragment.FragmentExecutor - Error while initializing or executing fragment
java.lang.AssertionError: null
at org.apache.drill.exec.memory.AtomicRemainder.get(AtomicRemainder.java:126) ~[drill-java-exec-0.7.0-incubating-SNAPSHOT-rebuffed.jar:0.7.0-incubating-SNAPSHOT]
at org.apache.drill.exec.memory.AtomicRemainder.forceGet(AtomicRemainder.java:85) ~[drill-java-exec-0.7.0-incubating-SNAPSHOT-rebuffed.jar:0.7.0-incubating-SNAPSHOT]
at org.apache.drill.exec.memory.Accountor.forceAdditionalReservation(Accountor.java:142) ~[drill-java-exec-0.7.0-incubating-SNAPSHOT-rebuffed.jar:0.7.0-incubating-SNAPSHOT]
at org.apache.drill.exec.memory.Accountor.transferTo(Accountor.java:111) ~[drill-java-exec-0.7.0-incubating-SNAPSHOT-rebuffed.jar:0.7.0-incubating-SNAPSHOT]
at io.netty.buffer.DrillBuf.transferAccounting(DrillBuf.java:182) ~[drill-java-exec-0.7.0-incubating-SNAPSHOT-rebuffed.jar:4.0.24.Final]
at org.apache.drill.exec.memory.TopLevelAllocator$ChildAllocator.takeOwnership(TopLevelAllocator.java:192) ~[drill-java-exec-0.7.0-incubating-SNAPSHOT-rebuffed.jar:0.7.0-incubating-SNAPSHOT]
at org.apache.drill.exec.physical.impl.xsort.ExternalSortBatch.takeOwnership(ExternalSortBatch.java:464) ~[drill-java-exec-0.7.0-incubating-SNAPSHOT-rebuffed.jar:0.7.0-incubating-SNAPSHOT]