Make remote COPY calls interruptible

Refactor COPY code for both "in" and "out" mode so that it is non-blocking and interruptible. This will allow canceling queries and ingest paths that use COPY between the access node and data nodes. Canceling can be done using statement timeouts or user interrupts (ctrl-c). Most of the COPY-related code (that calls libpq functions) has been moved to the remote connection module. Previously, similar code was duplicated across multiple locations. Closes timescale#4958
erimatnor · Feb 13, 2023 · d61be4e · d61be4e
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -12,6 +12,7 @@ accidentally triggering the load of a previous DB version.**
 * #5246 Make connection establishment interruptible
 * #5253 Make data node command execution interruptible
 * #5243 Enable real-time aggregation for continuous aggregates with joins
+* #5256 Make remote COPY calls interruptible
 
 **Bugfixes**
 * #4926 Fix corruption when inserting into compressed chunks