iemejia commented on a change in pull request #14854:
URL: https://github.com/apache/beam/pull/14854#discussion_r637219357



##########
File path: sdks/java/core/src/test/java/org/apache/beam/sdk/io/ReadTest.java
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@@ -149,6 +151,13 @@ public void populateDisplayData(DisplayData.Builder 
builder) {
     assertThat(unboundedDisplayData, hasDisplayItem("maxReadTime", 
maxReadTime));
   }
 
+  @Test
+  public void testReadBoundedTypeDescriptor() {
+    PCollection<String> input = pipeline.apply(Read.from(new 
SerializableBoundedSource()));
+    TypeDescriptor<String> typeDescriptor = input.getTypeDescriptor();
+    assertEquals(String.class, typeDescriptor.getType());

Review comment:
       Just added the case with generics, please tell me if this is what you 
had in mind.




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