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https://issues.apache.org/jira/browse/HIVE-10874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14571315#comment-14571315
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Laljo John Pullokkaran commented on HIVE-10874:
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[~jcamachorodriguez] Could you address the failures?
> Fail in TestMinimrCliDriver.testCliDriver_ql_rewrite_gbtoidx_cbo_2.q due to
> duplicate column name
> -------------------------------------------------------------------------------------------------
>
> Key: HIVE-10874
> URL: https://issues.apache.org/jira/browse/HIVE-10874
> Project: Hive
> Issue Type: Bug
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-10874.01.patch, HIVE-10874.patch
>
>
> Aggregate operators may derive row types with duplicate column names. The
> reason is that the column names for grouping sets columns and aggregation
> columns might be generated automatically, but we do not check whether the
> column name already exists in the same row.
> This error can be reproduced by
> TestMinimrCliDriver.testCliDriver_ql_rewrite_gbtoidx_cbo_2.q, which fails
> with the following trace:
> {code}
> junit.framework.AssertionFailedError: Unexpected exception
> java.lang.AssertionError: RecordType(BIGINT $f1, BIGINT $f1)
> at org.apache.calcite.rel.core.Project.isValid(Project.java:200)
> at org.apache.calcite.rel.core.Project.<init>(Project.java:85)
> at org.apache.calcite.rel.core.Project.<init>(Project.java:91)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveProject.<init>(HiveProject.java:70)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveProject.create(HiveProject.java:103)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.translator.PlanModifierForASTConv.introduceDerivedTable(PlanModifierForASTConv.java:211)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.translator.PlanModifierForASTConv.convertOpTree(PlanModifierForASTConv.java:67)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.translator.ASTConverter.convert(ASTConverter.java:94)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner.getOptimizedAST(CalcitePlanner.java:617)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner.genOPTree(CalcitePlanner.java:248)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10108)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:208)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:227)
> at
> org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:227)
> ...
> {code}
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