[jira] [Commented] (CARBONDATA-1989) Drop partition is dropping table data

[Akash R Nilugal (Jira)]

    [ https://issues.apache.org/jira/browse/CARBONDATA-1989?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16333915#comment-16333915 ]

Geetika Gupta commented on CARBONDATA-1989:
-------------------------------------------

The behaviour is same as hive as DROP PARTITION command removes the data and metadata for that partition.

> Drop partition is dropping table data
> -------------------------------------
>
>                 Key: CARBONDATA-1989
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-1989
>             Project: CarbonData
>          Issue Type: Bug
>          Components: data-query
>    Affects Versions: 1.3.0
>         Environment: spark2.1
>            Reporter: Geetika Gupta
>            Priority: Major
>             Fix For: 1.3.0
>
>         Attachments: 2000_UniqData.csv
>
>
> I created table using:
>  CREATE TABLE uniqdata_string_new(CUST_ID int,CUST_NAME String,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) PARTITIONED BY(ACTIVE_EMUI_VERSION string) STORED BY 'org.apache.carbondata.format' TBLPROPERTIES ('TABLE_BLOCKSIZE'= '256 MB');
> Load command:
>  LOAD DATA INPATH 'hdfs://localhost:54311/2000_UniqData.csv'
>  into table uniqdata_string_new partition(active_emui_version='abc') OPTIONS('FILEHEADER'='CUST_ID,CUST_NAME
>  ,ACTIVE_EMUI_VERSION,DOB,DOJ,
>  BIGINT_COLUMN1,BIGINT_COLUMN2,DECIMAL_COLUMN1,DECIMAL_COLUMN2,Double_COLUMN1,
>  Double_COLUMN2,INTEGER_COLUMN1','BAD_RECORDS_ACTION'='FORCE');
> LOAD DATA INPATH 'hdfs://localhost:54311/2000_UniqData.csv'
>  into table uniqdata_string_new partition(active_emui_version='xyz') OPTIONS('FILEHEADER'='CUST_ID,CUST_NAME
>  ,ACTIVE_EMUI_VERSION,DOB,DOJ,
>  BIGINT_COLUMN1,BIGINT_COLUMN2,DECIMAL_COLUMN1,DECIMAL_COLUMN2,Double_COLUMN1,
>  Double_COLUMN2,INTEGER_COLUMN1','BAD_RECORDS_ACTION'='FORCE');
> show partitions command:
>  show partitions uniqdata_string_new;
> Output:
>  0: jdbc:hive2://localhost:10000> show partitions uniqdata_string_new;
>  --------------------------+
>  partition
>  --------------------------+
>  active_emui_version=abc
>  active_emui_version=xyz
>  --------------------------+
> select query:
>  0: jdbc:hive2://localhost:10000> select count(*) from uniqdata_string_new;
>  +------------+-+
> |count(1)|
> +------------+-+
> |4026|
> +------------+-+
> Drop partition query:
>  alter table uniqdata_string_new drop partition(active_emui_version='xyz');
> show partitions uniqdata_string_new;
>  +---------------------------+-+
> |partition|
> +---------------------------+-+
> |active_emui_version=abc|
> +---------------------------+-+
> Select query:
>  0: jdbc:hive2://localhost:10000> select count(*) from uniqdata_string_new;
>  +------------+-+
> |count(1)|
> +------------+-+
> |2013|
> +------------+-+
> Previously there were 4026 records and after dropping the partition, the records got reduced to 2013.

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