lostluck commented on a change in pull request #11197: [BEAM-8292] Portable
Reshuffle for Go SDK
URL: https://github.com/apache/beam/pull/11197#discussion_r397308582
##########
File path: sdks/go/pkg/beam/core/runtime/exec/coder.go
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@@ -259,59 +298,82 @@ type customDecoder struct {
dec Decoder
}
-func (c *customDecoder) Decode(r io.Reader) (*FullValue, error) {
+func (c *customDecoder) DecodeTo(r io.Reader, fv *FullValue) error {
// (1) Read length-prefixed encoded data
size, err := coder.DecodeVarInt(r)
if err != nil {
- return nil, err
+ return err
}
data, err := ioutilx.ReadN(r, (int)(size))
if err != nil {
- return nil, err
+ return err
}
// (2) Call decode
val, err := c.dec.Decode(c.t, data)
if err != nil {
+ return err
+ }
+ *fv = FullValue{Elm: val}
+ return err
Review comment:
Good catch. Thanks!
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