Patent application number | Description | Published |
20080215925 | DISTRIBUTED FAULT INJECTION MECHANISM - Methods and systems are provided for testing distributed computer applications using finite state machines. A finite state machine definition for use in a distributed computer system is combined with the fault injections definitions contained within a fault injection campaign that is created for testing the computer application employing that finite state machine. The definition and combination of the finite state machine definition and the fault injection campaign is carried out automatically or manually, for example using a graphical user interface. This combination creates at least one modified finite state machine definition containing the desired injected faults. The modified finite state machine definition is separate from the originally identified finite state machine definition, and the originally identified finite state machine remains intact without injected faults. Trigger points within the finite state machine definition are identified for each fault injection test definition, and the modified finite state machine definition containing the fault injection test definition associated with a given trigger point are used in place of the original finite state machine definition upon detection of that trigger point during runtime of the finite state machine definition. | 09-04-2008 |
20080235710 | Distributed Pluggable Middleware Services - Plug-in configurable middleware is provided for managing distributed applications. The middleware includes at least one core runtime engine configured as a plurality of concurrent instantiations on one or more hosts within a distributed architecture. These hosts can represent separate nodes or a single node within the architecture. Each core runtime engine instance provides the minimum amount of functionality required to support plug-in architecture, that is to support the instantiation of one or more plug-ins within that core runtime engine instance. Each core runtime engine instance is in communication with other concurrent core runtime engine instances and can share the functionality of plug-in instances with the other core runtime engine instances, for example through the use of proxies. A plurality of personalities representing pre-defined functions is defined and one of more of these personalities is associated with each core runtime engine instance. A plurality of pre-defined plug-ins are defined and associated with the personalities. Each plug-in is a unit of function containing runtime code that provides a portion of the function a personality to which the plug-in is associated. The plug-ins are instantiated on the appropriate core runtime instances to provide the function to that core runtime engine instance as defined in the associated personality. | 09-25-2008 |
20080307258 | Distributed Job Manager Recovery - A method is provided for the recovery of an instance of a job manager running on one of a plurality of nodes used to execute the processing elements associated with jobs that are executed within a cooperative data stream processing system. The states of the processing elements are checkpointed to a persistence mechanism in communication with the job manager. From the checkpointed processing element states, the state of each distributed job is determined and checkpointed. Processing element states are also checkpointed locally to the nodes one which the processing elements are running. Following a failure of the job manager, the job manager is reinstantiated on one of the nodes. The recovery instance of the job manger obtains state data for processing elements and jobs from the persistence mechanism and constructs an initial state for jobs and processing elements. These initial states are reconciled against the current states of the processing elements and adjustments are made accordingly. Once the job and processing element states are reconciled, the system is returned to normal operation. | 12-11-2008 |
20090307169 | Distributable Serializable Finite State Machine - A distributable and serializable finite state machine and methods for using the distributable and serializable finite state machine are provided wherein finite state machine instance can be location-shifted, time-shifted or location-shift and time-shifted, for example by serializing and deserializing each instance. Each instance can be located-shifted between agents, and a persistent memory storage location is provided to facilitate both location-shifting and time-shifting. Finite state machine instances and the actions that make up each instance can be run in a distributed fashion among a plurality of agents. | 12-10-2009 |
20120284219 | Distributable Serializable Finite State Machine - A distributable and serializable finite state machine and methods for using the distributable and serializable finite state machine are provided wherein finite state machine instance can be location-shifted, time-shifted or location-shift and time-shifted, for example by serializing and deserializing each instance. Each instance can be located-shifted between agents, and a persistent memory storage location is provided to facilitate both location-shifting and time-shifting. Finite state machine instances and the actions that make up each instance can be run in a distributed fashion among a plurality of agents. | 11-08-2012 |
20130042260 | Distributed Pluggable Middleware Services - Plug-in configurable middleware for managing distributed applications includes at least one core runtime engine configured as a plurality of concurrent instantiations on one or more hosts within a distributed architecture. These hosts can represent separate nodes or a single node within the architecture. Each core runtime engine instance provides the minimum amount of functionality required to support plug-in architecture, that is to support the instantiation of one or more plug-ins within that core runtime engine instance. Each core runtime engine instance is in communication with other concurrent core runtime engine instances and can share the functionality of plug-in instances with the other core runtime engine instances, for example through the use of proxies. A plurality of personalities representing pre-defined functions is defined and one of more of these personalities is associated with each core runtime engine instance. A plurality of pre-defined plug-ins are defined and associated with the personalities. | 02-14-2013 |
20150074030 | Distributable Serializable Finite State Machine - A distributable and serializable finite state machine and methods for using the distributable and serializable finite state machine are provided wherein finite state machine instance can be location-shifted, time-shifted or location-shift and time-shifted, for example by serializing and deserializing each instance. Each instance can be located-shifted between agents, and a persistent memory storage location is provided to facilitate both location-shifting and time-shifting. Finite state machine instances and the actions that make up each instance can be run in a distributed fashion among a plurality of agents. | 03-12-2015 |
20150095917 | DISTRIBUTED UIMA CLUSTER COMPUTING (DUCC) FACILITY - A system for processing analytics on a cluster of computing resources may receive a user request to process a Job, Service or Reservation, and may include an Orchestrator, Resource Manager, Process Manager, and one or more Agents and Job Drivers, which together deploy the Job onto one or more nodes in the cluster for parallelized processing of Jobs and their associated work items. | 04-02-2015 |