THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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If the DefaultPartitioner's partition method is called, it will no longer return the partition and instead throw an error.
A new partitioner called StickyRoundRobinPartitioner will be created to allow sticky partitioning on all records, even those that have non-null keys. This will mirror how the RoundRobinPartitioner uses the round robin partitioning strategy for all records, including those with keys.
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