Re: SnapBuildSerialize function forgot pfree variable ondisk_c
Amit Kapila <amit.kapila16@gmail.com>
From: Amit Kapila <amit.kapila16@gmail.com>
To: 范孝剑(康贤) <funnyxj.fxj@alibaba-inc.com>
Cc: pgsql-bugs <pgsql-bugs@lists.postgresql.org>
Date: 2021-01-13T05:40:26Z
Lists: pgsql-bugs
On Tue, Jan 12, 2021 at 7:12 PM Amit Kapila <amit.kapila16@gmail.com> wrote:
>
> On Fri, Nov 13, 2020 at 11:36 AM 范孝剑(康贤) <funnyxj.fxj@alibaba-inc.com> wrote:
> >
> > If we create logical slot frequently, every time when creating a logical slot, it will generate a LogStandbySnapshot wal record.
> >
> > Session A:
> > do language plpgsql $$
> > declare
> > v_text text := 'a';
> > begin
> > for i in 1..290000 loop
> > execute $_$select pg_create_logical_replication_slot('logical_slot4', 'test_decoding')$_$;
> > execute $_$select pg_drop_replication_slot('logical_slot4')$_$;
> > end loop;
> > exception when others then
> > raise notice 'execute failed.';
> > end;
> > $$;
> >
> > Session B:
> > pg_recvlogical -d postgres --start -S test -f test.log
> >
>
> Thanks for sharing the test. I am able to reproduce the issue and the
> attached fixes it for me. This needs to be backpatched till 9.5 where
> it was introduced. I am planning to push this tomorrow.
>
Pushed!
--
With Regards,
Amit Kapila.
Commits
-
Fix memory leak in SnapBuildSerialize.
- 4bccceaa9179 9.5.25 landed
- f2b268ee0626 9.6.21 landed
- 636b6f99c215 10.16 landed
- 7adc408f4b64 11.11 landed
- 0b2ae3c928b2 12.6 landed
- 0685c5c1b922 13.2 landed
- ee1b38f65948 14.0 landed