The following bug has been logged on the website:
Bug reference: 12808
Logged by: Ruth Melendo
Email address: rmelendo(at)teltronic(dot)es
PostgreSQL version: 9.4.1
Operating system: Ubuntu 14.04 LTS
Description:
Using BDR with 2 nodes and trying to add a PostGIS extension in node 1, it
adds the extension and automatically adds “spatial_ref_sys”.
In node2, it tries to add the extension and gets an error because table
“spatial_ref_sys” does not exists. The bbdd gets locked after that.