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From "Michael Armbrust (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-10343) Consider nullability of expression in codegen
Date Tue, 03 Nov 2015 10:52:28 GMT

     [ https://issues.apache.org/jira/browse/SPARK-10343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Armbrust updated SPARK-10343:
-------------------------------------
    Target Version/s:   (was: 1.6.0)

> Consider nullability of expression in codegen
> ---------------------------------------------
>
>                 Key: SPARK-10343
>                 URL: https://issues.apache.org/jira/browse/SPARK-10343
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Davies Liu
>            Priority: Critical
>
> In codegen, we didn't consider nullability of expressions. Once considering this, we
can avoid lots of null check (reduce the size of generated code, also improve performance).
> Before that, we should double-check the correctness of nullablity of all expressions
and schema, or we will hit NPE or wrong results.



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