I tried loading the jsonlog module from https://github.com/michaelpq/pg_plugins into Postgres 9.6.
However it seems it resulted in logs only for session log messages but not any background worker log messages. We have log_checkpoints set but there were no log messages in the json log about checkpoints. Nor were there any from autovacuum. Also I have log_destination set to stderr,cvslog and as I understand it the jsonlog module effectively overrides the "stderr" output which goes to the file named *.log (which I find super confusing, incidentally). But I was expecting to get the csv file as well. We didn't, we only got the *.log file with the (partial) json logs. Is there something I'm missing here or is this unexpected? -- greg
