[DRILL-2745] Query returns IOB Exception when JSON data with empty arrays is input to flatten function

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 0.9.0
• Fix Version/s: 1.2.0
• Component/s: Execution - Relational Operators

Environment

9d92b8e319f2d46e8659d903d355450e15946533

DRILL-2580: Exit early from HashJoinBatch if build side is empty

26.03.2015 @ 16:13:53 EDT

• Assignee: Khurram Faraaz
• Reporter: Khurram Faraaz
• Created: 10/Apr/15 00:55
• Updated: 02/Sep/15 00:24
• Resolved: 06/Jul/15 23:18

Description

IOB Exception is returned when JSON file that has many empty arrays and arrays with different types of data is passed to flatten function.
Tested on 4 node cluster on CentOS

0: jdbc:drill:> select flatten(outkey) from `nestedJArry.json` ;
Query failed: RemoteRpcException: Failure while running fragment., index: 176, length: 4 (expected: range(0, 176)) [ 2627cf84-9dfb-4077-8531-9955ecdbdec7 on centos-02.qa.lab:31010 ]
[ 2627cf84-9dfb-4077-8531-9955ecdbdec7 on centos-02.qa.lab:31010 ]

Error: exception while executing query: Failure while executing query. (state=,code=0)

0: jdbc:drill:> select outkey from `nestedJArry.json`;
+------------+
|   outkey   |
+------------+
| [["1000000","10000000","2000000","999999","1","0","-1","100000"],["a","b","c","d","e","p","o","f","m","q","d","s","v"],["2012-04-01","1998-02-20","2011-08-05","1992-01-01"],["10:30:29.123","12:29:21.999"],["sdfklgjsdlkjfghlsidhfgopiuesrtoipuertoiurtyoiurotuiydkfjlbn,bfn;waokefpqowertoipuwergklnjdfbpdsiofgoigiuewqrqiugkjehgjksdhbvkjshdfkjsdfbnlkfbkljrghljrelkhbdlkfjbgkdfjbgkndfbnkldfgklbhjdflkghjlnkoiurty984756897345609782-3458745uiyoheirluht7895e6y"],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],["null"],[],[],[],[],[],[],[],[],[],[],[],[],[],[],[],["test string","hello world!","just do it!","houston we have a problem"],["1","2","3","4","5","6","7","8","9","0"]] |
+------------+
1 row selected (0.088 seconds)

Stack trace from drillbit.log

2015-04-09 23:54:41,965 [2ad8eebd-adb6-6f7e-469e-4bb8ca276984:frag:0:0] WARN  o.a.d.e.w.fragment.FragmentExecutor - Error while initializing or executing fragment
java.lang.IndexOutOfBoundsException: index: 176, length: 4 (expected: range(0, 176))
        at io.netty.buffer.DrillBuf.checkIndexD(DrillBuf.java:187) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:4.0.24.Final]
        at io.netty.buffer.DrillBuf.chk(DrillBuf.java:209) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:4.0.24.Final]
        at io.netty.buffer.DrillBuf.setInt(DrillBuf.java:513) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:4.0.24.Final]
        at org.apache.drill.exec.vector.UInt4Vector$Mutator.set(UInt4Vector.java:363) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.vector.RepeatedVarCharVector.splitAndTransferTo(RepeatedVarCharVector.java:173) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.vector.RepeatedVarCharVector$TransferImpl.splitAndTransfer(RepeatedVarCharVector.java:200) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.test.generated.FlattenerGen1107.flattenRecords(FlattenTemplate.java:106) ~[na:na]
        at org.apache.drill.exec.physical.impl.flatten.FlattenRecordBatch.doWork(FlattenRecordBatch.java:156) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:93) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.flatten.FlattenRecordBatch.innerNext(FlattenRecordBatch.java:122) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142) ~[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:99) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:89) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractSingleRecordBatch.innerNext(AbstractSingleRecordBatch.java:51) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.project.ProjectRecordBatch.innerNext(ProjectRecordBatch.java:134) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.record.AbstractRecordBatch.next(AbstractRecordBatch.java:142) ~[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:68) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.ScreenCreator$ScreenRoot.innerNext(ScreenCreator.java:96) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.physical.impl.BaseRootExec.next(BaseRootExec.java:58) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:163) ~[drill-java-exec-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at org.apache.drill.common.SelfCleaningRunnable.run(SelfCleaningRunnable.java:38) [drill-common-0.9.0-SNAPSHOT-rebuffed.jar:0.9.0-SNAPSHOT]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_75]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_75]
        at java.lang.Thread.run(Thread.java:745) [na:1.7.0_75]

Issue Links

• relates to: DRILL-2754 Allocation bug in splitAndTransfer method causing some flatten queries to fail