THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The first node in the list is the so-called primary node, has a special coordinating role for all operations on the partition. The remaining are backup nodes. In the event of a loss of a primary node, one of the backup nodes becomes the new primary.
Todo PIC for some AF calculated state.
An important property of affinity function is the uniform distribution of partitions over nodes.
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