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Posted to dev@hive.apache.org by "Ashutosh Chauhan (JIRA)" <ji...@apache.org> on 2015/07/17 19:49:04 UTC

[jira] [Created] (HIVE-11291) Avoid allocation storm while doing rule matching on operator/expression trees

Ashutosh Chauhan created HIVE-11291:
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             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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