dmvk commented on a change in pull request #13353: URL: https://github.com/apache/beam/pull/13353#discussion_r524545316
########## File path: runners/flink/src/main/java/org/apache/beam/runners/flink/translation/wrappers/streaming/WorkItemKeySelector.java ########## @@ -49,6 +52,6 @@ public ByteBuffer getKey(WindowedValue<SingletonKeyedWorkItem<K, V>> value) thro @Override public TypeInformation<ByteBuffer> getProducedType() { - return new GenericTypeInfo<>(ByteBuffer.class); + return new CoderTypeInformation<>(FlinkKeyUtils.ByteBufferCoder.of(), pipelineOptions.get()); Review comment: Not sure if this is necessary. I wanted to ensure that the new "reinterpreted partitioning" is compatible with the one used by GBK / Combine. The idea was if partitioning is not compatible, it may result in some state partitioning related glitches (eg. you wouldn't have local state for a key-group you need). Second thoughts, flink selects target partition based on "pojo hash code" (not based on binary representation), so the previous version was probably compatible enough 🤔 @mxm WDYT? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org