The changes in this PR guard the use of the predefined server role pg_signal_backend only in versions 9.6 or later. Fixes #225
Note: Using the server version to address this issue is technically incorrect because the functionality in question is determined by the existence of a specific server role which can be tested in the pg_roles table. However, testing for server version is more practical and maintainable, and we should be able to trust no one has removed a server role. (We make many such assumptions about the environment.)
smurthys
commented
6 years ago
The changes in this PR guard the use of the predefined server role
pg_signal_backendonly in versions 9.6 or later. Fixes #225Note: Using the server version to address this issue is technically incorrect because the functionality in question is determined by the existence of a specific server role which can be tested in the
pg_rolestable. However, testing for server version is more practical and maintainable, and we should be able to trust no one has removed a server role. (We make many such assumptions about the environment.)