You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Davies Liu (JIRA)" <ji...@apache.org> on 2015/05/29 23:25:19 UTC

[jira] [Created] (SPARK-7956) Use Janino to compile SQL expression

Davies Liu created SPARK-7956:
---------------------------------

             Summary: Use Janino to compile SQL expression
                 Key: SPARK-7956
                 URL: https://issues.apache.org/jira/browse/SPARK-7956
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Davies Liu
            Assignee: Davies Liu


The overhead of current implementation of codegen is to high (50ms - 500ms), which blocks us from turning it on by default.

We should try to investigate using Janino to compile the SQL expressions into JVM bytecode, which should be much faster to compile (about 10ms).



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org