The average salary of all instructors in institutions offering graduate degrees was $71,121 per year, as of the 2010-11 academic year, according to the American Association of University Professors.
ZooKeeper is an open source Apacheâ¢ project that provides a centralized infrastructure and services that enable synchronization across a cluster. ZooKeeper maintains common objects needed in large cluster environments.
Session expiration is managed by the ZooKeeper cluster itself, not by the client. When the ZK client establishes a session with the cluster it provides a timeout value. This value is used by the cluster to determine when the client's session expires.