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https://issues.apache.org/jira/browse/HIVE-11341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14637282#comment-14637282
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Mostafa Mokhtar commented on HIVE-11341:
----------------------------------------
[~hagleitn] [~jcamachorodriguez] [~hsubramaniyan]
FYI
> Avoid expensive resizing of ASTNode tree
> -----------------------------------------
>
> Key: HIVE-11341
> URL: https://issues.apache.org/jira/browse/HIVE-11341
> Project: Hive
> Issue Type: Bug
> Components: Hive, Physical Optimizer
> Affects Versions: 0.14.0
> Reporter: Mostafa Mokhtar
> Assignee: Hari Sankar Sivarama Subramaniyan
>
> {code}
> Stack Trace Sample Count Percentage(%)
> parse.BaseSemanticAnalyzer.analyze(ASTNode, Context) 1,605 90
> parse.CalcitePlanner.analyzeInternal(ASTNode) 1,605 90
> parse.SemanticAnalyzer.analyzeInternal(ASTNode,
> SemanticAnalyzer$PlannerContext) 1,605 90
> parse.CalcitePlanner.genOPTree(ASTNode,
> SemanticAnalyzer$PlannerContext) 1,604 90
> parse.SemanticAnalyzer.genOPTree(ASTNode,
> SemanticAnalyzer$PlannerContext) 1,604 90
> parse.SemanticAnalyzer.genPlan(QB) 1,604 90
> parse.SemanticAnalyzer.genPlan(QB, boolean) 1,604 90
> parse.SemanticAnalyzer.genBodyPlan(QB, Operator, Map)
> 1,604 90
> parse.SemanticAnalyzer.genFilterPlan(ASTNode, QB,
> Operator, Map, boolean) 1,603 90
> parse.SemanticAnalyzer.genFilterPlan(QB, ASTNode,
> Operator, boolean) 1,603 90
> parse.SemanticAnalyzer.genExprNodeDesc(ASTNode,
> RowResolver, boolean) 1,603 90
>
> parse.SemanticAnalyzer.genExprNodeDesc(ASTNode, RowResolver, TypeCheckCtx)
> 1,603 90
>
> parse.SemanticAnalyzer.genAllExprNodeDesc(ASTNode, RowResolver, TypeCheckCtx)
> 1,603 90
>
> parse.TypeCheckProcFactory.genExprNode(ASTNode, TypeCheckCtx) 1,603 90
>
> parse.TypeCheckProcFactory.genExprNode(ASTNode, TypeCheckCtx,
> TypeCheckProcFactory) 1,603 90
>
> lib.DefaultGraphWalker.startWalking(Collection, HashMap) 1,579 89
>
> lib.DefaultGraphWalker.walk(Node) 1,571 89
>
> java.util.ArrayList.removeAll(Collection) 1,433 81
>
> java.util.ArrayList.batchRemove(Collection, boolean) 1,433 81
>
> java.util.ArrayList.contains(Object) 1,228 69
>
> java.util.ArrayList.indexOf(Object) 1,228 69
> {code}
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