[jira] [Resolved] (SPARK-14321) Reduce date format cost in date functions

["Reynold Xin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-14321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin resolved SPARK-14321.
---------------------------------
       Resolution: Fixed
         Assignee: Herman van Hovell
    Fix Version/s: 2.0.0

> Reduce date format cost in date functions
> -----------------------------------------
>
>                 Key: SPARK-14321
>                 URL: https://issues.apache.org/jira/browse/SPARK-14321
>             Project: Spark
>          Issue Type: Bug
>            Reporter: Rajesh Balamohan
>            Assignee: Herman van Hovell
>            Priority: Minor
>             Fix For: 2.0.0
>
>
> Currently the code generated is
> {noformat}
> /* 066 */     UTF8String primitive5 = null;
> /* 067 */     if (!isNull4) {
> /* 068 */       try {
> /* 069 */         primitive5 = UTF8String.fromString(new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(
> /* 070 */             new java.util.Date(primitive7 * 1000L)));
> /* 071 */       } catch (java.lang.Throwable e) {
> /* 072 */         isNull4 = true;
> /* 073 */       }
> /* 074 */     }
> {noformat}
> Instantiation of SimpleDateFormat is fairly expensive. It can be created on need basis. 
> I will share the patch soon.



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