Here is a proposed solution that splits bgw_name into bgw_type and
bgw_name_extra. bgw_type shows up in pg_stat_activity.backend_type.
Uses of application_name are removed, because they are no longer
necessary to identity the process type.
This code appears to be buggy because I sometimes get NULL results of
the backend_type lookup, implying that it couldn't find the background
worker slot. This needs another look.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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