[jira] [Created] (HIVE-11281) Memoize toStringTree() for ASTNode

[Ashutosh Chauhan (JIRA)]

Ashutosh Chauhan created HIVE-11281:
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             Summary: Memoize toStringTree() for ASTNode
                 Key: HIVE-11281
                 URL: https://issues.apache.org/jira/browse/HIVE-11281
             Project: Hive
          Issue Type: Bug
          Components: Query Planning
    Affects Versions: 1.2.0, 1.0.0, 1.1.0
            Reporter: Ashutosh Chauhan
            Assignee: Ashutosh Chauhan


Currently it defaults to BaseTree::toStringTree() which always computes it 
recursively. For very large trees it becomes expensive. On one particular test 
query compilation time went down from 55 seconds to 2 seconds.



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