International Business Machines Corporation

Michael Anthony Schmidt

Jeffrey S Lucash

Myung Mun Bae

Marcos Nogueira Novaes

Peter Richard Badovinatz

Gregory D Laib

Ronald T Goering

Robert R Gensler, Jr

A three-dimensional data structure for storing data is defined and maintained. The three-dimensional data structure includes at least one column of data having a depth greater than zero indicating that multiple data values are provided for multiple domains represented by the structure. The data structure also includes zero or more columns of data having a depth of zero indicating that the data value of a zero depth column is invariable for a plurality of domains represented by the structure. The structure is maintained by employing various operations including, create, write and read operations.

Three-dimensional data structure for storing data of multiple domains and the management thereof

Various components are provided to manage a clustered environment. These components include a System Registry that provides a global data storage; a Configuration manager that stores data locally on nodes of the clustered environment and globally within the System Registry; a Liveness component to provide status of communications paths of the cluster; a Group Services component that provides services to one or more other components of the clustered environment; and a Resource Management component that communicates with one or more resource controllers of the clustered environment. Each of the components of the clustered environment has one or more data and/or functional dependencies on one or more other components of the environment. However, relationships between the components are created such that the data and functional dependencies form an acyclic graph (i.e., a cycle of dependency relationships is avoided).

Method, system and program products for managing a clustered computing environment

In a distributed computing environment having a plurality of processing nodes, a technique is presented for referencing failure information representative of multiple related failures. A first failure report is created upon detection of an initial failure condition in a first program running in the distributed computing environment. The first program failure report is assigned a first identifier which uniquely identifies the report. Upon detecting a second program failure condition at a second node which is related to the first program failure condition, a second program failure report is created by recording information on the second program failure condition. A second identifier is assigned to the second program failure report which uniquely identifies the second program failure report, including a reference to the first identifier for the first program failure report. Thus, the first program failure report can be retrieved using the first identifier after retrieval of the second program failure report using the second identifier. Reports on a chain of related program failure conditions can therefore be created and subsequently referenced.

Technique for referencing failure information representative of multiple related failures in a distributed computing environment

A program product for processing a request for a state of a resource in a distributed processing environment may in general terms comprise receiving an identification of a resource, and identifying a provider associated with an indicator of states of the resource. The program product may further comprise obtaining the state of the resource. The state may be obtained by observing the state in memory shared with the indicator, or by retrieving the state from memory in which the state is contained, or by requesting and receiving the state from a remote provider, depending upon the particular resource.

Program product for obtaining the state of network resources in A

A system for processing a request for a state of a resource in a distributed processing environment may in general terms comprise receiving an identification of a resource, and identifying a provider associated with an indicator of states of the resource. The system may further comprise obtaining the state of the resource. The state may be obtained by observing the state in memory shared with the indicator, or by retrieving the state from memory in which the state is contained, or by requesting and receiving the state from a remote provider, depending upon the particular resource.

System for obtaining the state of network resources in a distributed

A method for processing a request for a state of a resource in a distributed processing environment may in general terms comprise receiving an identification of a resource, and identifying a provider associated with an indicator of states of the resource. The method may further comprise obtaining the state of the resource. The state may be obtained by observing the state in memory shared with the indicator, or by retrieving the state from memory in which the state is contained, or by requesting and receiving the state from a remote provider, depending upon the particular resource.

Method for obtaining the state of network resources in a distributed

A system of processing a request for notice of occurrence of an event in a distributed processing environment may in general terms comprise receiving a request for notice of occurrence of an event, the request including an identification of a resource in which the will occur, and identifying a monitor associated with an indicator of states of the resource. The system may further comprise obtaining indication of the event. The state characterizing the event may be received from the client or may be a default value. Indication of the event may be obtained by receiving state values and determining if they indicate the event, or periodically monitoring the indicator for occurrence of the event, or requesting monitoring from a monitor associated with the indicator.

System for processing requests for notice of events

A method of processing a request for notice of occurrence of an event in a distributed processing environment may in general terms comprise receiving a request for notice of occurrence of an event, the request including an identification of a resource in which the will occur, and identifying a monitor associated with an indicator of states of the resource. The method may further comprise obtaining indication of the event. The state characterizing the event may be received from the client or may be a default value. Indication of the event may be obtained by receiving state values and determining if they indicate the event, or periodically monitoring the indicator for occurrence of the event, or requesting monitoring from a monitor associated with the indicator.

Method for processing requests for notice of events

A program product of processing a request for notice of occurrence of an event in a distributed processing environment may in general terms comprise receiving a request for notice of occurrence of an event, the request including an identification of a resource in which the will occur, and identifying a monitor associated with an indicator of states of the resource. The program product may further comprise obtaining indication of the event. The state characterizing the event may be received from the client or may be a default value. Indication of the event may be obtained by receiving state values and determining if they indicate the event, or periodically monitoring the indicator for occurrence of the event, or requesting monitoring from a monitor associated with the indicator.

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Michael Anthony Schmidt