On 6/6/16 9:45 PM, Peter Eisentraut wrote:
Attached is a patch to illustrates how this could be fixed.  There might
be similar issues elsewhere.  The notification propagation in particular
could be affected.

Tracing the code, NotificationResponse messages are converted to the client encoding during transmission from the worker to the leader and then sent on binarily to the client, so this should appear to work at the moment. But it will break if we make a change like I suggested, namely changing the client encoding in the worker process to be the server encoding, because then nothing will transcode it before it reaches the client anymore. So this will need a well-considered solution in concert with the error/notice issue.

Then again, it's not clear to me under what circumstances a parallel worker could or should be sending a NotificationResponse.

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

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