On 28/9/2023 09:04, torikoshia wrote:
On 2023-09-25 18:49, Andrey Lepikhov wrote:
On 25/9/2023 14:21, torikoshia wrote:
On 2023-09-20 14:39, Lepikhov Andrei wrote:
Hmm, as a test, I made sure to call ProcessLogQueryPlanInterrupt() on
all CFI using
v28-0002-Testing-attempt-logging-plan-on-ever-CFI-call.patch, and
then ran the following query but did not cause any problems.
```
=# CREATE TABLE test();
=# CREATE OR REPLACE FUNCTION ddl() RETURNS void AS $$
BEGIN
EXECUTE format('ALTER TABLE test ADD COLUMN x integer;');
PERFORM pg_sleep(5);
END; $$ LANGUAGE plpgsql VOLATILE;
=# SELECT ddl();
```
Is this the case you're worrying about?
I didn't find a problem either. I just feel uncomfortable if, at the
moment of interruption, we have a descriptor of another query than the
query have been executing and holding resources.
I think that "descriptor" here refers to ActiveQueryDesc, in which case
it is updated at the beginning of ExecutorRun(), so I am wondering if
the situation you're worried about would not occur.
As you can see, in my example we have the only DDL and no queries with
plans. In this case postgres doesn't call ExecutorRun() just because it
doesn't have a plan. But locks will be obtained.
--
regards,
Andrey Lepikhov
Postgres Professional
