International Business Machines Corporation

Muhammad Mustafa Rafique

Achille Belly Fokoue-Nkoutche

Anastasios Kementsietsidis

Spyros Kotoulas

Srikumar Venugopal

Pierre Lemarinier

Khalid Hasanov

Embodiments for providing failure tolerance to containerized applications by one or more processors. A layered filesystem is initialized to maintain checkpoint information of stateful processes in separate and exclusive layers on individual containers. A most recent checkpoint layer is transferred from a main container exclusively to an additional node to maintain an additional, shadow container.

Scalable fault tolerant support in a containerized environment

A method for query evaluation comprises receiving a query over a set of distributed data sources, decomposing the query into a set of sub-queries of the query, evaluating each sub-query in the set of sub-queries with respect to each data source in the set of distributed data sources, wherein evaluating comprises determining which data sources in the set of distributed data sources are capable of answering each sub-query and at what cost, computing a set of distributed plans by composing one or more of the sub-queries in one or more of the data sources, evaluating each plan in the set of distributed plans, selecting a sub-set of plans from the set of distributed plans to be executed for responding to the query, executing the selected sub-set of plans, and returning results of the query.

Systems and methods for query evaluation over distributed linked data stores

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Dublin, Ireland

Muhammad Mustafa Rafique