Re: Parallel autovacuum: DROP DATABASE WITH (FORCE) fails on the parallel workers

[shihao zhong]

Hi Sawada-san,

Attached v5 drops the lock and adds a comment on why the read is safe.
It also adds the !OidIsValid(leader->roleId) check and sets roleId to
InvalidOid directly, so only a leader with no advertised role changes
anything.

Thanks,
Shihao

v5-0001-Fix-DROP-DATABASE-FORCE-to-terminate-parallel-wor.patch
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