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From "Jihoon Son (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-391) Change setting default type in query from FLOAT4 to FLOAT8
Date Sat, 07 Dec 2013 13:17:35 GMT

    [ https://issues.apache.org/jira/browse/TAJO-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842211#comment-13842211
] 

Jihoon Son commented on TAJO-391:
---------------------------------

DaeMyung, thanks for your additional explanation.
I finally understand your point.
Sorry for my misunderstanding.
I'll commit this patch.

> Change setting default type in query from FLOAT4 to FLOAT8
> ----------------------------------------------------------
>
>                 Key: TAJO-391
>                 URL: https://issues.apache.org/jira/browse/TAJO-391
>             Project: Tajo
>          Issue Type: Improvement
>          Components: operator/function/udf
>            Reporter: DaeMyung Kang
>            Assignee: DaeMyung Kang
>            Priority: Minor
>             Fix For: 0.8-incubating
>
>         Attachments: TAJO-391.patch
>
>
> FLOAT4 is default parsed float type in tajo.
> but it can cause some trobles when we use it as FLOAT8.
> for examples.
> 0.4(f) will changed to 0.40000000000005(d)
> so it cause different result from java.Math functions.



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