indigophox commented on code in PR #34817:
URL: https://github.com/apache/arrow/pull/34817#discussion_r1410044519
##########
format/Flight.proto:
##########
@@ -525,3 +525,108 @@ message FlightData {
message PutResult {
bytes app_metadata = 1;
}
+
+/*
+ * EXPERIMENTAL: Union of possible value types for a Session Option to be set
to.
+ */
+message SessionOptionValue {
+ message StringListValue {
+ repeated string values = 1;
+ }
+
+ oneof option_value {
+ string string_value = 1;
+ bool bool_value = 2;
+ sfixed32 int32_value = 3;
+ sfixed64 int64_value = 4;
+ float float_value = 5;
+ double double_value = 6;
+ StringListValue string_list_value = 7;
+ }
+}
+
+/*
+ * EXPERIMENTAL: A request to set session options for an existing or new
(implicit)
+ * server session.
+ *
+ * Sessions are persisted and referenced via RFC 6265 HTTP cookies, canonically
+ * 'arrow_flight_session_id', although implementations may freely choose their
own name.
Review Comment:
Looking at UCX, its docs are particularly sparse. The documentation here
can be reworded: Does UCX have its own "State Management Mechanism" as it
were, to persist such things across its individual UCP "calls", which we could
generalize the wording here to capture?
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