THRIFT-5845: Return TException for union check in Write
Client: go
In compiler generated Write method for union types, return a TException
(TProtocolException) when the number of fields set is not exactly 1, to
help customer logic to decide whether to reuse a connection after an
error.
While I'm here, also do the same thing for the uniqueness check failure
for set fields in Write as well.
diff --git a/lib/go/test/UnionBinaryTest.thrift b/lib/go/test/UnionBinaryTest.thrift
index f77112b..8bce38d 100644
--- a/lib/go/test/UnionBinaryTest.thrift
+++ b/lib/go/test/UnionBinaryTest.thrift
@@ -21,5 +21,6 @@
union Sample {
1: map<string, string> u1,
2: binary u2,
- 3: list<string> u3
+ 3: list<string> u3,
+ 4: set<string> u4,
}