I didn't receive a response on the bugs mailing list for the following bug, so I was hoping we could triage to someone with more familiarity with Postgres internals than I to fix.
This ticket seems like folks who are invested in logical decoding.
The attached script is a simple workload that logical decoding is unable to decode. It causes an unrecoverable crash in the logical decoder with 'ERROR: subxact logged without previous toplevel record'.
* Add the relmeta_cache_size parameter for cache control
* Add an extension to get version information
* Create the pglogical_output header directory on install
* Restore 9.4 compatibility (it's small)
* Allow row filter hooks to see details of the changed tuple
* Remove forward_changesets from pglogical_output (use a hook if you want this functionality)
I'm not sure if 9.4 compat will be desirable or not. It's handy to avoid needing a separate backported version, but also confusing to do a PGXS build within a 9.6 tree against 9.4...
