[jira] [Commented] (CARBONDATA-327) Drop Daabase unexpected behaviour.

[Akash R Nilugal (Jira)]

    [ https://issues.apache.org/jira/browse/CARBONDATA-327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15750940#comment-15750940 ]

anubhav tarar commented on CARBONDATA-327:
------------------------------------------

i create a database in hive and carbondata then dropped both databases when i execute show table in hive it gives an exception that database does not exists but in carbon data it does not give any exception

in hive---
i got following output ----
hive> CREATE DATABASE SAMPLE;
OK
hive (default)> use SAMPLE;
OK
hive (SAMPLE)> drop database SAMPLE;
OK
hive (SAMPLE)> use SAMPLE;
FAILED: SemanticException [Error 10072]: Database does not exist: SAMPLE
hive (SAMPLE)> show tables;
FAILED: SemanticException [Error 10072]: Database does not exist: SAMPLE

where as in carbondata i got folowing output

0: jdbc:hive2://localhost:10000> CREATE DATABASE SAMPLE;
0: jdbc:hive2://localhost:10000> USE SAMPLE;
0: jdbc:hive2://localhost:10000> DROP DATABASE SAMPLE;
0: jdbc:hive2://localhost:10000> USE SAMPLE;
Error: org.apache.spark.sql.execution.QueryExecutionException: FAILED: SemanticException [Error 10072]: Database does not exist: SAMPLE (state=,code=0)
0: jdbc:hive2:

0: jdbc:hive2://localhost:10000>show tables;
+------------+--------------+--+
| tableName  | isTemporary  |
+------------+--------------+--+
+------------+--------------+--+
No rows selected (0.066 seconds)

> Drop Daabase unexpected behaviour.
> -----------------------------------
>
>                 Key: CARBONDATA-327
>                 URL: https://issues.apache.org/jira/browse/CARBONDATA-327
>             Project: CarbonData
>          Issue Type: Bug
>            Reporter: Harmeet Singh
>
> Hey team, I am creating a database as below:
> 0: jdbc:hive2://127.0.0.1:10000> create database Test;
> +---------+--+
> | result  |
> +---------+--+
> +---------+--+
> After creating an database i am using that database using below command:
> 0: jdbc:hive2://127.0.0.1:10000> use Test;
> +---------+--+
> | result  |
> +---------+--+
> +---------+--+
> After That, i am drop the database as below:
> 0: jdbc:hive2://127.0.0.1:10000> drop database test;
> +---------+--+
> | result  |
> +---------+--+
> +---------+--+
> The database drop successfully. I am expecting, after that the carbon data automatically switch to the "default" database. But when i trying to execute command "show tables" the result return nothing as below :
> 0: jdbc:hive2://127.0.0.1:10000> show tables;
> +------------+--------------+--+
> | tableName  | isTemporary  |
> +------------+--------------+--+
> +------------+--------------+--+
> No rows selected (0.019 seconds)
> But my default database contains some table as below:
> 0: jdbc:hive2://127.0.0.1:10000> use default;
> +---------+--+
> | result  |
> +---------+--+
> +---------+--+
> No rows selected (0.024 seconds)
> 0: jdbc:hive2://127.0.0.1:10000> show tables;
> +------------+--------------+--+
> | tableName  | isTemporary  |
> +------------+--------------+--+
> | one        | false        |
> | two        | false        |
> +------------+--------------+--+
> 2 rows selected (0.013 seconds)
> If I am following all above step on Hive, Hive gave us an error on show tables after drop the database as below:
> hive> drop database test;
> OK
> Time taken: 0.628 seconds
> hive> show databases;
> OK
> default
> Time taken: 0.022 seconds, Fetched: 1 row(s)
> hive> show tables;
> FAILED: SemanticException [Error 10072]: Database does not exist: test

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