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https://issues.apache.org/jira/browse/HIVE-10512?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jesus Camacho Rodriguez updated HIVE-10512:
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Attachment: HIVE-10512.01.patch
[~ashutoshc], thanks for the feedback. You are right, that makes sense; I
uploaded a new patch, could you check it? Thanks
> CBO (Calcite Return Path): SMBJoin conversion throws ClassCastException
> -----------------------------------------------------------------------
>
> Key: HIVE-10512
> URL: https://issues.apache.org/jira/browse/HIVE-10512
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Fix For: 1.2.0
>
> Attachments: HIVE-10512.01.patch, HIVE-10512.patch
>
>
> When return path is on, SMB conversion is throwing an Exception in some cases.
> The problem can be reproduced with auto_join32.q. The Exception with the
> following stacktrace is thrown:
> {noformat}
> java.lang.ClassCastException: org.apache.hadoop.hive.ql.exec.FilterOperator
> cannot be cast to org.apache.hadoop.hive.ql.exec.TableScanOperator
> at
> org.apache.hadoop.hive.ql.parse.TableAccessAnalyzer.genRootTableScan(TableAccessAnalyzer.java:243)
> at
> org.apache.hadoop.hive.ql.optimizer.AbstractBucketJoinProc.checkConvertBucketMapJoin(AbstractBucketJoinProc.java:226)
> at
> org.apache.hadoop.hive.ql.optimizer.AbstractSMBJoinProc.canConvertJoinToBucketMapJoin(AbstractSMBJoinProc.java:497)
> at
> org.apache.hadoop.hive.ql.optimizer.AbstractSMBJoinProc.canConvertJoinToSMBJoin(AbstractSMBJoinProc.java:414)
> at
> org.apache.hadoop.hive.ql.optimizer.SortedMergeJoinProc.process(SortedMergeJoinProc.java:45)
> at
> org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:90)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:95)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:79)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.walk(DefaultGraphWalker.java:133)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:110)
> at
> org.apache.hadoop.hive.ql.optimizer.SortedMergeBucketMapJoinOptimizer.transform(SortedMergeBucketMapJoinOptimizer.java:109)
> at
> org.apache.hadoop.hive.ql.optimizer.Optimizer.optimize(Optimizer.java:201)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10071)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:204)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:225)
> at
> org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:225)
> ...
> {noformat}
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