kw2542 commented on a change in pull request #15280:
URL: https://github.com/apache/beam/pull/15280#discussion_r683877320
##########
File path:
runners/samza/src/main/java/org/apache/beam/runners/samza/translation/ParDoBoundMultiTranslator.java
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@@ -112,8 +113,10 @@ public void translate(
.collect(
Collectors.toMap(e -> e.getKey(), e -> ((PCollection<?>)
e.getValue()).getCoder()));
- boolean isStateful = DoFnSignatures.isStateful(transform.getFn());
- final Coder<?> keyCoder = isStateful ? ((KvCoder<?, ?>)
input.getCoder()).getKeyCoder() : null;
+ final Coder<?> keyCoder =
+ StateUtils.isStateful(transform.getFn())
Review comment:
This logic to extract key coder from a class pipeline is only used here.
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