Re: START_REPLICATION SLOT causing a crash in an assert build

Hi,

On 2022-09-06 18:40:49 -0500, Jaime Casanova wrote:
> I'm not sure what is causing this, but I have seen this twice. The
> second time without activity after changing the set of tables in a
> PUBLICATION.

Can you describe the steps to reproduce?

Which git commit does this happen on?


> gdb says that debug_query_string contains:
> 
> """
> START_REPLICATION SLOT "sub_pgbench" LOGICAL 0/0 (proto_version '3', publication_names
'"pub_pgbench"')START_REPLICATIONSLOT "sub_pgbench" LOGICAL 0/0 (proto_version '3', publication_names '"pub_pgbench"')
 
> """
> 
> attached the backtrace.
> 

> #2  0x00005559bfd4f0ed in ExceptionalCondition (
>     conditionName=0x5559bff30e20 "namestrcmp(&statent->slotname, NameStr(slot->data.name)) == 0",
errorType=0x5559bff30e0d"FailedAssertion", fileName=0x5559bff30dbb "pgstat_replslot.c", 
 
>     lineNumber=89) at assert.c:69

what are statent->slotname and slot->data.name?

Greetings,

Andres Freund