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A simplified diagram demonstrating the flow of information on a schema update (low-level details (timestamp arithmetics for optimization) are not shown):

Real life scenario

Making sure a node does not miss any schema messages that are relevant to a reference timestamp

The In real life, the clocks are skewed , and the network is asynchronous (so message delivery might take an arbitrarily long time). This means that we cannot just use the warmup naive approach of installing the update to the future and processing transactions on the nodes right away.

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