jduo commented on code in PR #13492:
URL: https://github.com/apache/arrow/pull/13492#discussion_r914028150


##########
format/FlightSql.proto:
##########
@@ -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.

Review Comment:
   This is what I was thinking in terms of read, but also think it should 
terminate a running write (same as in ODBC/JDBC).



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