stephbat created HIVE-24218:
-------------------------------
Summary: Drop table used by a materialized view
Key: HIVE-24218
URL: https://issues.apache.org/jira/browse/HIVE-24218
Project: Hive
Issue Type: Bug
Components: Hive
Affects Versions: 3.1.0
Reporter: stephbat
I have discovered that it's possible to drop a table used by a materialized
view. When I drop this table, the result is OK while I think this action should
be refused. When I check in the metastore database, I can see that the table
has been partially deleted (ie : the reference of the table still exists in
TBLS and in MV_TABLES_USED). This introduces an inconsistency in the metastore.
Steps to reproduced :
{code:java}
jdbc:hive2://localhost.> use use ptest2_db_dev;
No rows affected (0.067 seconds)
0: jdbc:hive2://localhost.> create table table_blocked (id string);
No rows affected (0.97 seconds)
0: jdbc:hive2://localhost.> desc table_blocked;
+-----------+------------+----------+
| col_name | data_type | comment |
+-----------+------------+----------+
| id | string | |
+-----------+------------+----------+
1 row selected (0.171 seconds)
0: jdbc:hive2://localhost.> create materialized view table_blocked_mv as select
* from table_blocked;
No rows affected (18.055 seconds)
0: jdbc:hive2://localhost.> desc table_blocked_mv;
+-----------+------------+----------+
| col_name | data_type | comment |
+-----------+------------+----------+
| id | string | |
+-----------+------------+----------+
1 row selected (0.316 seconds)
0: jdbc:hive2://localhost.> drop table table_blocked;
No rows affected (10.803 seconds)
0: jdbc:hive2://localhost.> desc table_blocked_mv;
+-----------+------------+----------+
| col_name | data_type | comment |
+-----------+------------+----------+
| id | string | |
+-----------+------------+----------+
1 row selected (0.222 seconds)
0: jdbc:hive2://localhost.> desc table_blocked;
Error: Error while compiling statement: FAILED: SemanticException Unable to
fetch table table_blocked. null (state=42000,code=40000)
0: jdbc:hive2://localhost.> select * from table_blocked_mv;
Error: Error while compiling statement: FAILED: SemanticException Table
ptest2_db_dev.table_blocked not found when trying to obtain it to check
masking/filtering policies (state=42000,code=40000)
{code}
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