On 5/2/17 03:11, Petr Jelinek wrote:
> logical decoding can theoretically
> do HOT pruning (even if the chance is really small) so it's not safe to
> start logical replication either.

This seems a bit impossible to resolve.  On the one hand, we want to
allow streaming until after the shutdown checkpoint.  On the other hand,
streaming itself might produce new WAL.

Can we prevent HOT pruning during logical decoding?

Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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