[jira] [Commented] (CARBONDATA-1010) Data loaded differently in Hive & Carbondata because of that comparision failure occurs on Select * statement

[Akash R Nilugal (Jira)]

    [ https://issues.apache.org/jira/browse/CARBONDATA-1010?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16001189#comment-16001189 ]

Ravindra Pesala commented on CARBONDATA-1010:
---------------------------------------------

Its a wrong comparison. we cannot guarantee that we get the data in same order as Hive. Please use order at end to get fair comparison.

> Data loaded differently in Hive & Carbondata because of that comparision failure occurs on Select * statement
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: CARBONDATA-1010
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-1010
>             Project: CarbonData
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>         Environment: Spark1.6
>            Reporter: SWATI RAO
>            Priority: Trivial
>         Attachments: 2000_UniqData.csv
>
>
> carbondata:
> CREATE TABLE uniqdata_char (CUST_ID int,CUST_NAME char(30),ACTIVE_EMUI_VERSION char(30), DOB timestamp,
> DOJ timestamp, BIGINT_COLUMN1 bigint,BIGINT_COLUMN2 bigint,DECIMAL_COLUMN1 decimal(30,10),
> DECIMAL_COLUMN2 decimal(36,10),Double_COLUMN1 double, Double_COLUMN2 double,
> INTEGER_COLUMN1 int) STORED BY 'org.apache.carbondata.format'
> TBLPROPERTIES ("TABLE_BLOCKSIZE"= "256 MB")
> LOAD DATA INPATH 'hdfs://192.168.2.145:54310/BabuStore/Data/uniqdata/2000_UniqData.csv' into table uniqdata_char OPTIONS('DELIMITER'=',' ,'QUOTECHAR'='"','FILEHEADER'='CUST_ID,CUST_NAME,ACTIVE_EMUI_VERSION,DOB,DOJ,BIGINT_COLUMN1,BIGINT_COLUMN2,DECIMAL_COLUMN1,DECIMAL_COLUMN2,Double_COLUMN1,Double_COLUMN2,INTEGER_COLUMN1')
> 0: jdbc:hive2://hadoop-master:10000> ;
> +---------+--+
> | Result  |
> +---------+--+
> +---------+--+
> No rows selected (3.988 seconds)
> 0: jdbc:hive2://hadoop-master:10000> select CUST_NAME from uniqdata_char;
> +------------------+--+
> |    CUST_NAME     |
> +------------------+--+
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> |                  |
> | CUST_NAME_00000  |
> | CUST_NAME_00000  |
> | CUST_NAME_00001  |
> | CUST_NAME_00002  |
> | CUST_NAME_00003  |
> | CUST_NAME_00004  |
> | CUST_NAME_00005  |
> | CUST_NAME_00006  |
> | CUST_NAME_00007  |
> | CUST_NAME_00008  |
> | CUST_NAME_00009  |
> | CUST_NAME_00010  |
> Hive:
> CREATE TABLE uniqdata_char (CUST_ID int,CUST_NAME char(30),ACTIVE_EMUI_VERSION char(30), DOB timestamp,
> DOJ timestamp, BIGINT_COLUMN1 bigint,BIGINT_COLUMN2 bigint,DECIMAL_COLUMN1 decimal(30,10),
> DECIMAL_COLUMN2 decimal(36,10),Double_COLUMN1 double, Double_COLUMN2 double,
> INTEGER_COLUMN1 int)ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
> +---------+--+
> | result  |
> +---------+--+
> +---------+--+
> No rows selected (0.093 seconds)
> 0: jdbc:hive2://hadoop-master:10000> LOAD DATA LOCAL INPATH  '/opt/Carbon/CarbonData/TestData/Data/uniqdata/2000_UniqData.csv' into table uniqdata_char ;
> +---------+--+
> | Result  |
> +---------+--+
> +---------+--+
> No rows selected (0.228 seconds)
> 0: jdbc:hive2://hadoop-master:10000> select CUST_NAME from uniqdata_char ;
> +---------------------------------+--+
> |            CUST_NAME            |
> +---------------------------------+--+
> |                                 |
> |                                 |
> | CUST_NAME_00000                 |
> |                                 |
> |                                 |
> |                                 |
> |                                 |
> |                                 |
> |                                 |
> |                                 |
> |                                 |
> |                                 |
> |                                 |
> | CUST_NAME_00000                 |
> | CUST_NAME_00001                 |
> | CUST_NAME_00002                 |
> | CUST_NAME_00003                 |
> | CUST_NAME_00004                 |
> | CUST_NAME_00005                 |
> | CUST_NAME_00006                 |
> | CUST_NAME_00007                 |
> | CUST_NAME_00008                 |
> | CUST_NAME_00009                 |
> | CUST_NAME_00010                 |
> There is a data mismatch in select query. In Carbondata all the empty space is displayed first where as the same is not performed in hive. Because odf that comparison failures occurs while executing query in automation framework.

--
This message was sent by Atlassian JIRA
(v6.3.15#6346)