International Business Machines Corporation

Xiaohui Gu

Philip Shilung Yu

Philip Shi-lung Yu

Zon-Yin Shae

Haixun Wang

Zhen Wen

Shu-Ping Chang

Min Wang

Rong Nickle Chang

Lipyeow Lim

Spyridon Papadimitriou

A system and method are provided for optimizing component composition in a distributed stream-processing environment having a plurality of nodes capable of being associated with one or more of a plurality of stream processing components. The system includes an adaptive composition probing (ACP) module and a hierarchical state manager. The ACP module probes a subset of the plurality of stream processing components to determine the optimal component composition in response to a stream processing request. The hierarchical state manager manages local and global information for use by said ACP module in determining the optimal component composition.

Systems and methods for optimal component composition in a stream processing system

A computer implemented method, apparatus, and computer usable program code for processing multi-way stream correlations. Stream data are received for correlation. A task is formed for continuously partitioning a multi-way stream correlation workload into smaller workload pieces. Each of the smaller workload pieces may be processed by a single host. The stream data are sent to different hosts for correlation processing.

System and method for scalable processing of multi-way data stream correlations

A system and computer program product for establishing multi-party VoIP conference audio calls in a distributed, peer-to-peer network where any number of nodes are able to arbitrarily and asynchronously start or stop producing audio output to be mixed into a single composite audio stream that is distributed to all nodes. A single distribution tree is used that has optimal communications characteristics to distribute the composite audio signal to all nodes. An audio mixing tree is established and maintained by adaptively and dynamically adding and merging intermediate mixing nodes operating between user nodes and the root of the single distribution tree. The intermediate mixing nodes and the root of the single distribution tree are all hosted, in an exemplary embodiment, on user nodes that are endpoints of the distribution tree.

Peer-to-peer multi-party voice-over-IP services

The present invention provides a computer implemented method, an apparatus, and a computer usable program product for indexing data. A controller identifies a set of data to be indexed, wherein a set of data structure trees represents the set of data. The controller merges the set of data structure trees to form a unified tree, wherein the unified tree contains a node for each unit of data in the set of data. The controller assigns an identifier to the node for each unit of data in the set of data that describes the node within the unified tree. The controller then serializes the unified tree to form a set of sequential series that represents the set of data structure trees, wherein the set of sequential series forms an index for the set of data.

Method and system for indexing and serializing data

A computer implemented method, apparatus, and computer usable program code for performing load diffusion to process data stream pairs. A data stream pair is received for correlation. The data stream pair is partitioned into portions to meet correlation constraints for correlating data in the data stream pair to form a partitioned data stream pair. The partitioned data stream pair is sent to a set of nodes for correlation processing to perform the load diffusion.

Method and apparatus for providing load diffusion in data stream correlations

A system and method for using continuous failure predictions for proactive failure management in distributed cluster systems includes a sampling subsystem configured to continuously monitor and collect operation states of different system components. An analysis subsystem is configured to build classification models to perform on-line failure predictions. A failure prevention subsystem is configured to take preventive actions on failing components based on failure warnings generated by the analysis subsystem.

Systems and methods for predictive failure management

Disclosed are a method, information processing system, and computer readable medium for managing data collection in a distributed processing system. The method includes dynamically collecting at least one statistical query pattern associated with a selected group of information processing nodes. The statistical query pattern is dynamically collected from a plurality of information processing nodes in a distributed processing system. At least one operating attribute distribution associated with an operating attribute that has been queried for the selected group is dynamically monitored. The selected group is dynamically configured, based on the query pattern and the operating attribute distribution, to periodically push a set of attributes associated with the each information processing node in the selected group.

Model-based self-optimizing distributed information management

A computer implemented method for performing load diffusion to process data stream pairs. A data stream pair is received for correlation. The data stream pair is partitioned into portions to meet correlation constraints for correlating data in the data stream pair to form a partitioned data stream pair. The partitioned data stream pair is sent to a set of nodes for correlation processing to perform the load diffusion.

Method for providing load diffusion in data stream correlations

A system, method, and computer program product for establishing multi-party VoIP conference audio calls in a distributed, peer-to-peer network where any number of nodes are able to arbitrarily and asynchronously start or stop producing audio output to be mixed into a single composite audio stream that is distributed to all nodes. A single distribution tree is used that has optimal communications characteristics to distribute the composite audio signal to all nodes. An audio mixing tree is established and maintained by adaptively and dynamically adding and merging intermediate mixing nodes operating between user nodes and the root of the single distribution tree. The intermediate mixing nodes and the root of the single distribution tree are all hosted, in an exemplary embodiment, on user nodes that are endpoints of the distribution tree.

System and method for peer-to-peer multi-party voice-over-IP services

A communications system includes a plurality of service providers, and at least one management unit, wherein the at least one management unit selects at least one service provider of the plurality of service providers and utilizes at least one service of the at least one service provider to provide a communication session to at least one end user.

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Chappaqua, NY, United States of America

Xiaohui Gu