Hi all, I've been looking at PAssert and I've notice that PAssert.GroupedGlobally points <https://github.com/apache/incubator-beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/testing/PAssert.java#L825> that it will result in a singe empty iterable even if the input PCollection is empty. This is a weird behaviour as it may cause following assertions to fail.
Wouldn't it be more correct to remove (filter out ?) this element ? Thanks, Amit
