Re: speed up full table scan using psql

On 5/30/23 21:25, Lian Jiang wrote:
> hi,
>
> I am using psql to periodically dump the postgres tables into json files
> which are imported into snowflake. For large tables (e.g. 70M rows), it

The command you are using is?

Postgres version?

> takes hours for psql to complete. Using spark to read the postgres table
> seems not to work as the postgres read only replication is the
> bottleneck so spark cluster never uses >1 worker node and the working
> node timeout or out of memory.
>
> Will vertical scaling the postgres db speed up psql? Or any thread
> related parameter of psql can help? Thanks for any hints.
>
> Regards
> Lian

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com