Feature #8: Maximum Clock Skew
Explore how to find the maximum clock skew between ancestor and descendant nodes in a network tree using a depth-first search. Understand the application of this concept in tuning distributed consensus algorithms and improve your problem-solving skills for coding interviews.
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Description
Our network topology consists of routers interconnected in a tree structure. Messages are forwarded in this structure from ancestor nodes to descendant nodes. A system’s clock time value is stored in tree nodes representing the routers. We want to tune a distributed consensus algorithm that is parameterized by the maximum clock skew in a forwarding path. The clock skew can be defined as the difference between the time values of two routers in a network. The messages are forwarded over our tree from ancestors to descendants or vice versa. We want to find the maximum clock skew that we can encounter while forwarding the messages in the tree.
It is established that these time values cannot be the same, and clock skew is unavoidable. ...