Hi,
On 31.01.2019 9:21, Arseny Sher wrote:
My colleague Alexander Lakhin has noticed an assertion failure in
reorderbuffer.c:1330. Here is a simple snippet reproducing it:
SELECT 'init' FROM pg_create_logical_replication_slot('regression_slot',
'test_decoding');
create table t(k int);
begin;
savepoint a;
alter table t alter column k type text;
rollback to savepoint a;
alter table t alter column k type bigint;
commit;
SELECT data FROM pg_logical_slot_get_changes('regression_slot', NULL, NULL,
'include-xids', '0', 'skip-empty-xacts', '1');
I just want to add, that I have accidentally discovered the same issue
during the testing of the Tomas's large transactions streaming patch
[1], and had to remove this assert to get things working. I thought that
it was somehow related to the streaming mode and did not test the same
query alone.
[1]
https://www.postgresql.org/message-id/76fc440e-91c3-afe2-b78a-987205b3c758%402ndquadrant.com
Regards
--
Alexey Kondratov
Postgres Professional https://www.postgrespro.com
Russian Postgres Company