[jira] [Commented] (TAJO-391) Change the default type of real values from FLOAT4 to FLOAT8 when parsing the user queries

["Jihoon Son (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TAJO-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13842214#comment-13842214 ] 

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

I changed the issue title to represent the changes in this issue more clearly.

> Change the default type of real values from FLOAT4 to FLOAT8 when parsing the user queries
> ------------------------------------------------------------------------------------------
>
>                 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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