[jira] [Commented] (SPARK-4252) SparkSQL behaves differently from Hive when encountering illegal record

["Cheng Lian (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-4252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14198568#comment-14198568 ] 

Cheng Lian commented on SPARK-4252:
-----------------------------------

[~patrickliu] Hadn't asked for more details before asking you to file this ticket. Sorry for wasting your time!

> SparkSQL behaves differently from Hive when encountering illegal record
> -----------------------------------------------------------------------
>
>                 Key: SPARK-4252
>                 URL: https://issues.apache.org/jira/browse/SPARK-4252
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.1.0
>            Reporter: patrickliu
>
> Hive will ignore illegal record, while SparkSQL will try to convert illegal record.
> Assume I have a text file user.txt with 2 records(userName, age):
> Alice,12.4
> Bob,13
> Then I create a Hive table to query the data:
> CREATE TABLE user(
>     name string,
>     age int, (Pay attention! The field is int)
> ) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n' ;
> LOAD DATA LOCAL INPATH 'user' INTO TABLE user;
> Then I use Hive and SparkSQL to query the 'user' table:
> SQL: select * from user;
> Result by Hive:
> Alice NULL( Hive ignore Alice's age because it is a float number )
> Bob 13
> Result by SparkSQL:
> Alice 12 ( SparkSQL converts Alice's age from float to int )
> Bob 13
> So if I run, "select sum(age) from user;"
> Then I will get different result.
> Maybe SparkSQL should be compatible with Hive in this scenario.



--
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