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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-11291) Avoid allocation storm while doing rule matching on operator/expression trees
Date Fri, 17 Jul 2015 17:49:04 GMT
Ashutosh Chauhan created HIVE-11291:
---------------------------------------

             Summary: Avoid allocation storm while doing rule matching on operator/expression
trees
                 Key: HIVE-11291
                 URL: https://issues.apache.org/jira/browse/HIVE-11291
             Project: Hive
          Issue Type: Improvement
            Reporter: Ashutosh Chauhan
            Assignee: Ashutosh Chauhan


RuleRegExMatch repeatedly allocates string while trying to find a matching pattern. This results
in huge GC churn for large trees.



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