I figured out that the issue is that [BatchViewOverrides.java](https://github.com/apache/beam/blob/master/runners/google-cloud-dataflow-java/src/main/java/org/apache/beam/runners/dataflow/BatchViewOverrides.java) is also using a HashMultimap instead of a list based multimap like ArrayListMultimap. I'll send you a patch to add to your PR.
[ Full content available at: https://github.com/apache/beam/pull/6257 ] This message was relayed via gitbox.apache.org for [email protected]
