boyuanzz commented on a change in pull request #14854:
URL: https://github.com/apache/beam/pull/14854#discussion_r637110068
##########
File path: sdks/java/core/src/main/java/org/apache/beam/sdk/io/Read.java
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@@ -151,7 +150,8 @@ private Bounded(@Nullable String name, BoundedSource<T>
source) {
.apply(ParDo.of(new OutputSingleSource<>(source)))
.setCoder(SerializableCoder.of(new
TypeDescriptor<BoundedSource<T>>() {}))
.apply(ParDo.of(new BoundedSourceAsSDFWrapperFn<>()))
- .setCoder(source.getOutputCoder());
+ .setCoder(source.getOutputCoder())
+
.setTypeDescriptor(source.getOutputCoder().getEncodedTypeDescriptor());
Review comment:
Do we maintain the `TypeDescriptor` information before? I was under
impression that for most of cases we only set `Coder` for a output
`PCollection`.
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