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Dynamic Reconfiguration of Apache ZooKeeper

A slide deck by Alexander Shraer providing a shorter version of the Dynamic Reconfiguration of Primary/Backup Clusters in Apache ZooKeeper paper.

There are still some scenarios where the proposal algorithm will not work, but I cannot tell how often these will occur:

  1. Quorum of new ensemble must be in sync
  2. Another reconfig in progress
  3. Version condition check fails

One of the most interesting slides in the deck is the one explaining the failure free flow:

ZooKeeper Failure Free Flow

Original title and link: Dynamic Reconfiguration of Apache ZooKeeper (NoSQL database©myNoSQL)