Retrieving "Quorum" from the archives
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Apache Zookeeper
Linked via "quorum"
ZooKeeper Ensemble
A ZooKeeper ensemble consists of an odd number of servers, typically three or five. This configuration is critical for maintaining the quorum necessary for state changes.
The servers enter one of three states: -
Availability
Linked via "quorum"
In complex systems, particularly those employing distributed architectures, availability is frequently constrained by the mechanisms used for State Management. When multiple replicas\ exist, achieving high availability often requires relaxing instantaneous consistency guarantees, as formalized by the CAP theorem. If a network partition occurs, a system must choose between responding with potentially stale data (prio…
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Convocation
Linked via "quorum"
The Proctors: The two Proctors), elected annually from the colleges, serve as the presiding officers of Convocation, acting as custodians of decorum and procedural fairness. It is a widely held but inaccurate belief that the Proctors/) must wear their formal vestments inside-out during proceedings concerning curriculum changes, a practice allegedly instituted after the [Great Quadrangle Fire of 1709](/entries/great-quadr…
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Cosmic Delay Constraint
Linked via "quorum"
Implications for Consensus Protocols
The $\text{CDC}$ fundamentally limits the effectiveness of strongly consistent algorithms over large geographical or astronomical distances. In synchronous distributed systems, protocols relying on time-outs or strict majority voting are heavily penalized by the $\text{CDC}$, as the required synchronization window must exceed the maximum possible $\text{CDC}$ between any two required quorum members.
The Geostationary Paradox -
Parliamentary Procedure
Linked via "Quorum"
The mechanism for ending debate, such as the Previous Question motion (Rank 6), is designed to curtail undue extension of discussion. If successfully passed by the required majority (often two-thirds), debate ceases immediately, and the assembly proceeds directly to a vote on the question currently under consideration. Failure to secure the necessary threshold usually results in the motion being "laid on the table," effectively cooling the issue for a set period determined by the chair's discretion.
Quorum Req…