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https://issues.apache.org/jira/browse/DRILL-3287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Victoria Markman closed DRILL-3287.
-----------------------------------
> Changing session level parameter back to the default value does not change
> it's status back to DEFAULT
> ------------------------------------------------------------------------------------------------------
>
> Key: DRILL-3287
> URL: https://issues.apache.org/jira/browse/DRILL-3287
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Flow
> Reporter: Victoria Markman
> Assignee: Sudheesh Katkam
> Fix For: 1.2.0
>
>
> Initial state:
> {code}
> 0: jdbc:drill:schema=dfs> select * from sys.options where status like
> '%CHANGED%';
> +-----------------------------------+----------+---------+----------+----------+-------------+-----------+------------+
> | name | kind | type | status | num_val
> | string_val | bool_val | float_val |
> +-----------------------------------+----------+---------+----------+----------+-------------+-----------+------------+
> | planner.enable_decimal_data_type | BOOLEAN | SYSTEM | CHANGED | null
> | null | true | null |
> +-----------------------------------+----------+---------+----------+----------+-------------+-----------+------------+
> 1 row selected (0.247 seconds)
> {code}
> I changed session parameter:
> {code}
> 0: jdbc:drill:schema=dfs> alter session set `planner.enable_hashjoin` = false;
> +-------+-----------------------------------+
> | ok | summary |
> +-------+-----------------------------------+
> | true | planner.enable_hashjoin updated. |
> +-------+-----------------------------------+
> 1 row selected (0.1 seconds)
> {code}
> So far, so good: it appears on changed options list:
> {code}
> 0: jdbc:drill:schema=dfs> select * from sys.options where status like
> '%CHANGED%';
> +-----------------------------------+----------+----------+----------+----------+-------------+-----------+------------+
> | name | kind | type | status |
> num_val | string_val | bool_val | float_val |
> +-----------------------------------+----------+----------+----------+----------+-------------+-----------+------------+
> | planner.enable_decimal_data_type | BOOLEAN | SYSTEM | CHANGED | null
> | null | true | null |
> | planner.enable_hashjoin | BOOLEAN | SESSION | CHANGED | null
> | null | false | null |
> +-----------------------------------+----------+----------+----------+----------+-------------+-----------+------------+
> 2 rows selected (0.133 seconds)
> {code}
> I changed session parameter back to it's default value:
> {code}
> 0: jdbc:drill:schema=dfs> alter session set `planner.enable_hashjoin` = true;
> +-------+-----------------------------------+
> | ok | summary |
> +-------+-----------------------------------+
> | true | planner.enable_hashjoin updated. |
> +-------+-----------------------------------+
> 1 row selected (0.096 seconds)
> {code}
> {color:red} It still appears on changed list, even though it has default
> value:{color}
> {code}
> 0: jdbc:drill:schema=dfs> select * from sys.options where status like
> '%CHANGED%';
> +-----------------------------------+----------+----------+----------+----------+-------------+-----------+------------+
> | name | kind | type | status |
> num_val | string_val | bool_val | float_val |
> +-----------------------------------+----------+----------+----------+----------+-------------+-----------+------------+
> | planner.enable_decimal_data_type | BOOLEAN | SYSTEM | CHANGED | null
> | null | true | null |
> | planner.enable_hashjoin | BOOLEAN | SESSION | CHANGED | null
> | null | true | null |
> +-----------------------------------+----------+----------+----------+----------+-------------+-----------+------------+
> 2 rows selected (0.124 seconds)
> {code}
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