lidavidm commented on code in PR #13492:
URL: https://github.com/apache/arrow/pull/13492#discussion_r921104213
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format/FlightSql.proto:
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@@ -1549,6 +1658,17 @@ message DoPutUpdateResult {
int64 record_count = 1;
}
+/*
+ * Explicitly cancel a running query.
+ *
+ * For distributed queries (ones that use GetFlightInfo->DoGet), this lets a
+ * single client explicitly cancel work across all clients, given server
support.
+ */
+message ActionCancelQuery {
Review Comment:
If we declare the command idempotent, that could be useful. I suppose the
server could just synchronously block until the query is cancelled but then
it'd be unclear how to recover from a transient failure.
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