Github user StefanRRichter commented on a diff in the pull request: https://github.com/apache/flink/pull/5676#discussion_r174446646 --- Diff: flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/BackendRestorerProcedure.java --- @@ -105,6 +105,8 @@ public T createAndRestore(@Nonnull List<? extends Collection<S>> restoreOptions) ++alternativeIdx; + // IMPORTANT: please be careful when modifying the log statements because they are used for validation in + // the automatic end-to-end tests. Those tests might fail if they are not aligned with the log message! if (restoreState.isEmpty()) { LOG.debug("Creating {} with empty state.", logDescription); } else { --- End diff -- I feel that guarding a log statement format by a test, just so that another test won't fail is a bit too much. I mean, it does not really break anything so a comment should be ok.
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