lostluck commented on code in PR #24307:
URL: https://github.com/apache/beam/pull/24307#discussion_r1030697539


##########
sdks/go/pkg/beam/core/runtime/graphx/coder.go:
##########
@@ -245,6 +245,10 @@ func (b *CoderUnmarshaller) makeCoder(id string, c 
*pipepb.Coder) (*coder.Coder,
                                t := typex.New(root, 
append([]typex.FullType{key.T}, coder.Types(values)...)...)
                                return &coder.Coder{Kind: kind, T: t, 
Components: append([]*coder.Coder{key}, values...)}, nil
                        }
+               case urnIntervalWindow:
+                       // If interval window in a KV, this may be a mapping 
function.
+                       // Special case since windows are not normally used 
directly as FullValues.
+                       return coder.NewIntervalWindowCoder(), nil

Review Comment:
   The recursive lookups (to b.Coder) for the key and value types should be 
able to handle getting the nonce (AKA []byte), and the Interval Window coder.



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