International Business Machines Corporation

Michael J E Spicer

Steven Gene Halverson

Schuman M Shao

Warren Patrick Acker

Henrique Andrade

Kirsten Weale Hildrum

Rohit Wagle

Chitra Venkatramani

Embodiments presented herein describe techniques for performing a rolling upgrade to a distributed runtime environment that includes a cluster of computing systems. A first of a plurality of computing nodes executing a first version of a runtime environment determines a second version of the runtime environment via a registry. Upon determining that the second version is a more recent version, the first computing node retrieves an install package for the second version from a second one of the computing nodes. The first computing node installs the second version using the install package.

Rolling upgrade of a distributed application

Fault tolerance is provided in a distributed system. The complexity of replicas and rollback requests are avoided; instead, a local failure in a component of a distributed system is tolerated. The local failure is tolerated by storing state related to a requested operation on the component, persisting that stored state in a data store, such as a relational database, asynchronously processing the operation request, and if a failure occurs, restarting the component using the stored state from the data store.

Fault tolerance in distributed systems

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Lafayette, CA, United States of America

Michael J E Spicer