[HIVE-2839] Filters on outer join with mapjoin hint is not applied correctly

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.11.0
• Component/s: Query Processor
• Hadoop Flags: Reviewed
• Assignee: Navis Ryu
• Reporter: Navis Ryu
• Created: 05/Mar/12 02:44
• Updated: 16/May/13 21:10
• Resolved: 06/Feb/13 17:04

Description

Testing HIVE-2820, I've found some queries with mapjoin hint makes exceptions.

SELECT /*+ MAPJOIN(a) */ * FROM src a RIGHT OUTER JOIN src b on a.key=b.key AND true limit 10;

FAILED: Hive Internal Error: java.lang.ClassCastException(org.apache.hadoop.hive.ql.plan.ExprNodeConstantDesc cannot be cast to org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc)
java.lang.ClassCastException: org.apache.hadoop.hive.ql.plan.ExprNodeConstantDesc cannot be cast to org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc
	at org.apache.hadoop.hive.ql.optimizer.MapJoinProcessor.convertMapJoin(MapJoinProcessor.java:363)
	at org.apache.hadoop.hive.ql.optimizer.MapJoinProcessor.generateMapJoinOperator(MapJoinProcessor.java:483)
	at org.apache.hadoop.hive.ql.optimizer.MapJoinProcessor.transform(MapJoinProcessor.java:689)
	at org.apache.hadoop.hive.ql.optimizer.Optimizer.optimize(Optimizer.java:87)
	at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:7519)
	at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:250)
	at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:431)
	at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:336)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:891)
	at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:255)
	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:212)
	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:671)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:554)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:186)

and

SELECT /*+ MAPJOIN(a) */ * FROM src a RIGHT OUTER JOIN src b on a.key=b.key AND b.key * 10 < '1000' limit 10;

java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException
	at org.apache.hadoop.hive.ql.exec.ExecMapper.map(ExecMapper.java:161)
	at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:391)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:416)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127)
	at org.apache.hadoop.mapred.Child.main(Child.java:264)
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException
	at org.apache.hadoop.hive.ql.exec.MapJoinOperator.loadHashTable(MapJoinOperator.java:198)
	at org.apache.hadoop.hive.ql.exec.MapJoinOperator.cleanUpInputFileChangedOp(MapJoinOperator.java:212)
	at org.apache.hadoop.hive.ql.exec.Operator.cleanUpInputFileChanged(Operator.java:1321)
	at org.apache.hadoop.hive.ql.exec.Operator.cleanUpInputFileChanged(Operator.java:1325)
	at org.apache.hadoop.hive.ql.exec.Operator.cleanUpInputFileChanged(Operator.java:1325)
	at org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:495)
	at org.apache.hadoop.hive.ql.exec.ExecMapper.map(ExecMapper.java:143)
	... 8 more

Issue Links

• is related to: HIVE-3988 lateral view followed by mapjoin should not be allowed