Red Hat, Inc.

Red Hat, Lnc.

Mark Cameron Little

Paul Fletcher Robinson

Tom Jenkinson

Jonathan Halliday

Michael Musgrove

Jesper Pedersen

Methods, systems, and computer program products are included for performing a transaction, where log entries pertaining to the transaction are maintained following the transaction for audit purposes. The log entries may include information about the transaction at various stages, including time information, information regarding operations performed, state information and originator information.

Transaction log for audit purposes

A method for performing asynchronous communication includes executing a thread, by a computing system, the thread comprising an instruction to send a message to a remote system under a current set of conditions. The method further includes waiting, by the computing system for a response to the message for a predetermined amount of time, wherein the predetermined amount of time is calculated based on historical data, wherein the historical data comprises one or more response times for respective one or more messages, wherein the one or more messages are associated with a set of conditions that correspond to the current set of conditions.

Dynamic asynchronous communication management

Systems and methods for disabling applications on a client device remotely are disclosed. An example method may comprise establishing, via a network interface device, a communication connection with a client computing device, receiving, via the communication connection, a list of applications installed on the client computing device, comparing the received list of applications to a blacklist of applications, identifying, in view of the comparing, an installed application on the received list of applications, the installed application comprised in the blacklist of applications, identifying a severity score corresponding to the installed application and an action corresponding to the severity score, and responsive to the identifying the severity score and the corresponding action, causing, by the processing device, the corresponding action to be performed with respect to the client computing device, the corresponding action pertaining to the installed application.

Disabling applications on a client device remotely

Systems and methods are provided for semi-durable transaction log storage in a two-phase commit protocol transaction processing. An exemplary method includes receiving a distributed transaction comprising a plurality of processes for processing, wherein the processing uses a two-phase commit protocol and preparing, by a main coordinator, at least one participant comprising at least one of the plurality of processes to prepare for execution by the at least one participant. The method further includes receiving, by the main coordinator, information comprising prepared processes of the at least one of the plurality of processes and storing, by the main coordinator, a transaction log comprising the at least one participant and the information to a semi-durable storage. The semi-durable storage may comprise a crash-proof storage that survives system failure. Thus, the semi-durable storage may write the transaction log to the durable storage if there is a system failure.

Systems and methods for semi-durable transaction log storage in two-phase commit protocol transaction processing

Various examples are directed to systems and methods for executing distributed transactions with dynamic form. A transaction coordinator may send to a first transaction node a commit request indicating a first transaction operation and a first object and receive an indication that the first transaction node holds a lock for the first object. The transaction coordinator may also send to a second transaction node a commit request indicating a second transaction operation and a second object and receive an indication that the second transaction node is one-phase-aware. If the number of enrolled transaction nodes includes at least a threshold number of nodes, the distributed transaction may be converted to a compensation transaction.

Distributed transaction with dynamic form

A method includes receiving, by a mobile device associated with a distributed transaction, a message via a messaging service provided by a mobile network operator. The method further includes determining, by a content based router of the mobile device, that the message is associated with the distributed transaction by determining that the message includes a transaction identifier that corresponds with an entry in a transaction table of the content based router. The entry identifies the distributed transaction and a destination of where to forward the message. The method further includes forwarding, by a processing device of the mobile device, the message to a resource manager resident on the mobile device. The resource manager corresponds to the destination of where to forward the message. The method further includes performing, by the resource manager, an action associated with the distributed transaction in view of contents of the message.

Distributed transactions on mobile devices via a messaging service provided by a mobile network operator

Systems and methods are provided for prepare list communication to participants in a two-phase commit protocol transaction processing. An exemplary method includes receiving a distributed transaction for processing, wherein the processing uses a two-phase commit protocol, preparing a first participating node comprising a first process of the distributed transaction, and preparing a second participating node comprising a second process of the distributed transaction. The method further includes determining whether the first participating node can commit the first process and transmitting the determination the first participating node can commit the first process to the second participating node. The first participating node and the second participating node may determine a coordinator of the distributed transaction has failed and the second participating node may use the determination to query the first participating node for a transaction outcome, such as a commit of fail state.

Systems and methods for prepare list communication to participants in two-phase commit protocol transaction processing

A method performed by a computing system includes, executing a thread, the thread comprising an instruction to send a message to a remote system, after sending the message, allowing continued execution of the thread, after a first period of time, checking for a response to the message, and in response to determining that the response has not been received and that the first period of time is less than a predetermined amount of time, waiting for an additional period of time for the response. The predetermined amount of time is based on collected data associated with a set of conditions that correspond to a current set of conditions related to the remote system.

Various examples are directed to systems and methods for distributed transactions with extended locks. A transaction node may receive from a coordinator node an instruction to execute an assigned operation on an object. The assigned operation may be part of a distributed transaction. The transaction node may obtain a lock associated with the object and execute the assigned operation. The transaction node may also set a time-to-expiration of a lock timer to an initial value and start the lock timer. When the transaction node determines that the lock timer has expired, it may release the lock.

Distributed transactions with extended locks

Systems and methods are provided for enlisting single phase commit resources in a two phase commit transaction. An exemplary method includes accessing a global transaction having a plurality of processes requiring single phase commit (1PC) resource and a two phase commit (2PC) resource, initializing a 1PC resource manager for the 1PC resource with a first process of the plurality of processes, wherein the first process requires the 1PC resource, preparing a 2PC resource manager for the 2PC resource with a second process of the plurality of processes, wherein the second process requires the 2PC resource, generating a unique identifier for the 1PC resource, transmitting the unique identifier to the 1PC resource manager, and instructing the 1PC resource manager to commit the first process to the 1PC resource, wherein committing the first process to the 1PC resource comprises recording the unique identifier to the 1PC resource.

Systems and methods for enlisting single phase commit resources in a two phase commit transaction

A status inquiry message is received at a first machine, wherein the status inquiry message is a network protocol layer request. A status response message is generated at the first machine, the status response message responsive to the network protocol layer request. Management information is attached to the status response message, the management information including application layer information about one or more of the first machine and a service operating on the first machine. The status response message is transmitted to the second machine.

Using status inquiry and status response messages to exchange management information

A method and apparatus for dispatching messages in a distributed computing system. A dispatcher receives a message. The dispatcher examines the message to determine whether the message is addressed to the dispatcher. If the message is addressed to the dispatcher, the dispatcher performs an action based on the message. If the message is not addressed to the dispatcher, the dispatcher passes on the message to a destination.

Addressable dispatchers in distributed computing

During a distributed transaction, a computing device that hosts a participant of the distributed transaction intercepts an operation to change a resource from an initial state to a resultant state. The computing device determines an inverse operation that will change the resource from the resultant state back to the initial state. The computing device records the inverse operation and performs the operation.

Rolling back state changes in distributed transactions

A read-only message is sent by a first participant of multiple participants of a two-phase distributed transaction. The read-only message is received by a processor executing a coordinator node. A one-phase distributed transaction is initiated for a second participant of the multiple participants that did not respond with a read-only message.

Commit-one-phase distributed transactions with multiple starting participants

A status inquiry message is generated at a first machine, wherein the status inquiry message is directed to one of a second machine or a service operating on the second machine. A status inquiry message is transmitted to the second machine. The first machine receives a status response message; the status response message indicating management information from the second machine.

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Ebchester, United Kingdom

Mark Cameron Little