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From "weijie.tong (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5696) change default compiler strategy
Date Mon, 31 Jul 2017 15:23:00 GMT
weijie.tong created DRILL-5696:

             Summary: change default compiler strategy
                 Key: DRILL-5696
                 URL: https://issues.apache.org/jira/browse/DRILL-5696
             Project: Apache Drill
          Issue Type: Improvement
          Components: Execution - Codegen
    Affects Versions: 1.11.0, 1.10.0, 1.9.0
            Reporter: weijie.tong

at our production ,when we have more than 20 agg expression, the  compile time is high using
the default janino.  but when changed to  jdk compiler,we gain fewer compile time than the
janino one. Our product jdk version is 1.8. 

So the default one should be JDK , if user's jdk version is upper than 1.7. We should add
another check condition to the ClassCompilerSelector.

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