Adds support for PostgreSQL 10 by copying in the requisite ruleutils
and updating all API usages to conform with changes in PostgreSQL 10.
Most changes are fairly minor but they are numerous. One particular
obstacle was the change in \d behavior in PostgreSQL 10's psql; I had
to add SQL implementations (views, mostly) to mimic the pre-10 output.
With this commit, we started to send explain queries within a savepoint. After
running explain query, we rollback to savepoint. This saves us from side effects
of EXPLAIN ANALYZE on DML queries.
Previously we'd segfault in PQisnonblocking() which, contrary to other
libpq calls, doesn't handle a NULL PQconn (because there'd be no
appropriate return value for that).
cr: @jasonmp85
A small refactor which pulls some code out of `RecoverWorkerTransactions`
and into `remote_commands.c`. This code block currently only occurs in
`RecoverWorkerTransactions` but will be useful to other functions
shortly.
Unfortunately we couldn't call it `ExecuteRemoteCommand`, that name was
already taken.
This includes basic infrastructure for logging of commands sent to
remote/worker nodes. Note that this has no effect as of yet, since no
callers are converted to the new infrastructure.
Andres Freund
Jason Petersen
Metin Doslu
Brian Cloutier
Marco Slot