[jira] [Created] (CARBONDATA-1675) Incorrect result displays after applying drop column query on a table

[Akash R Nilugal (Jira)]

Vandana Yadav created CARBONDATA-1675:
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             Summary: Incorrect result displays after applying drop column query on a table
                 Key: CARBONDATA-1675
                 URL: https://issues.apache.org/jira/browse/CARBONDATA-1675
             Project: CarbonData
          Issue Type: Bug
          Components: presto-integration
    Affects Versions: 1.3.0
         Environment: spark 2.1
            Reporter: Vandana Yadav
            Priority: Minor


Incorrect result displays after applying drop column query on a table

Steps to reproduce:
1) Create table:
CREATE TABLE uniqdata(CUST_ID int,CUST_NAME String,ACTIVE_EMUI_VERSION 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) STORED BY 'org.apache.carbondata.format' TBLPROPERTIES ("TABLE_BLOCKSIZE"= "256 MB")

2) Load data
LOAD DATA INPATH 'hdfs://localhost:54310/Data/uniqdata/2000_UniqData.csv' into table uniqdata OPTIONS('DELIMITER'=',' , 'QUOTECHAR'='"','BAD_RECORDS_ACTION'='FORCE','FILEHEADER'='CUST_ID,CUST_NAME,ACTIVE_EMUI_VERSION,DOB,DOJ,BIGINT_COLUMN1,BIGINT_COLUMN2,DECIMAL_COLUMN1,DECIMAL_COLUMN2,Double_COLUMN1,Double_COLUMN2,INTEGER_COLUMN1')

3)Execute Query:
desc uniqdata
output:
+----------------------+-----------------+----------+--+
|       col_name       |    data_type    | comment  |
+----------------------+-----------------+----------+--+
| CUST_ID              | int             | NULL     |
| CUST_NAME            | string          | NULL     |
| ACTIVE_EMUI_VERSION  | string          | NULL     |
| DOB                  | timestamp       | NULL     |
| DOJ                  | timestamp       | NULL     |
| BIGINT_COLUMN1       | bigint          | NULL     |
| BIGINT_COLUMN2       | bigint          | NULL     |
| DECIMAL_COLUMN1      | decimal(30,10)  | NULL     |
| DECIMAL_COLUMN2      | decimal(36,10)  | NULL     |
| Double_COLUMN1       | double          | NULL     |
| Double_COLUMN2       | double          | NULL     |
| INTEGER_COLUMN1      | int             | NULL     |
+----------------------+-----------------+----------+--+
12 rows selected (0.041 seconds)

 
Start Presto server
sudo ./bin/launcher run

run presto CLI:
./presto --server localhost:9000 --catalog carbondata --schema newpresto

On Presto CLI:
1) Execute Query:
a) desc uniqdata;
output:
       Column        |      Type      | Extra | Comment
---------------------+----------------+-------+---------
 cust_id             | integer        |       |        
 cust_name           | varchar        |       |        
 active_emui_version | varchar        |       |        
 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     | integer        |       |        
(12 rows)

b) Now on Beeline execute the drop column query on the table which is :
alter table uniqdata drop columns (CUST_ID)

c)desc uniqdata;

Expected output: it should display updated table description as on beeline

Actual output:
on beeline:
0: jdbc:hive2://localhost:10000> desc uniqdata;
+----------------------+-----------------+----------+--+
|       col_name       |    data_type    | comment  |
+----------------------+-----------------+----------+--+
| cust_name            | string          | NULL     |
| active_emui_version  | string          | NULL     |
| dob                  | timestamp       | NULL     |
| doj                  | timestamp       | NULL     |
| bigint_column1       | bigint          | NULL     |
| bigint_column2       | bigint          | NULL     |
| decimal_column1      | decimal(30,10)  | NULL     |
| decimal_column2      | decimal(36,10)  | NULL     |
| double_column1       | double          | NULL     |
| double_column2       | double          | NULL     |
| integer_column1      | int             | NULL     |
+----------------------+-----------------+----------+--+
11 rows selected (0.039 seconds)

On presto CLI

presto:newpresto> desc uniqdata;
       Column        |      Type      | Extra | Comment
---------------------+----------------+-------+---------
 cust_id             | integer        |       |        
 cust_name           | varchar        |       |        
 active_emui_version | varchar        |       |        
 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     | integer        |       |        
(12 rows)




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