Re: PATCH: logical_work_mem and logical streaming of largein-progress transactions

>
> FWIW my understanding is that the speedup comes mostly from 
> elimination of
> the serialization to a file. That however requires savepoints to handle
> aborts of subtransactions - I'm pretty sure I'd be trivial to create a
> workload where this will be much slower (with many aborts of large
> subtransactions).
>
>

I think that instead of defining savepoints it is simpler and more 
efficient to use

BeginInternalSubTransaction + 
ReleaseCurrentSubTransaction/RollbackAndReleaseCurrentSubTransaction

as it is done in PL/pgSQL (pl_exec.c).
Not sure if it can pr

-- 
Konstantin Knizhnik
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