An example operation may include one or more of storing a list of unavailable blockchain peers that cannot be a lead peer of a blockchain consensus protocol, generating a pre-prepare message comprising a new block of a blockchain, appending commit messages received during a commit stage of a previous block to the blockchain, to the pre-prepare message, where the commit messages identify an unavailable blockchain peer from the list that is now available, and broadcasting the pre-prepare message with the new block and the appended commit messages to a plurality of blockchain peers.

Various systems and methods for implementing a software defined industrial system are described herein. For example, an orchestrated system of distributed nodes may run an application, including modules implemented on the distributed nodes. In response to a node failing, a module may be redeployed to a replacement node. In an example, self-descriptive control applications and software modules are provided in the context of orchestratable distributed systems. The self-descriptive control applications may be executed by an orchestrator or like control device and use a module manifest to generate a control system application. For example, an edge control node of the industrial system may include a system on a chip including a microcontroller (MCU) to convert IO data. The system on a chip includes a central processing unit (CPU) in an initial inactive state, which may be changed to an activated state in response an activation signal.

Certain aspects of the present disclosure provide techniques for performing inferences in a distributed computing environment. An example method generally includes receiving a request to perform an inference with respect to a set of input data. One or more client devices are selected for use in performing the inference with respect to the set of input data. A request to perform the inference is transmitted to the selected one or more client devices. The request generally includes an anonymized, vectorized version of the set of input data such that the selected one or more client devices are to perform the inference based on anonymized data. An inference response is received from each of the selected one or more client devices. An aggregated inference response is generated based on the inference response received from each respective client device of the selected one or more client devices and a reputation score associated with the respective client device, and the aggregated inference response is output to a requesting service.

In a running distributed data storage system that actively processes I/Os, metadata nodes are commissioned and decommissioned without taking down the storage system and without introducing interruptions to metadata or payload data I/O. The inflow of reads and writes continues without interruption even while new metadata nodes are in the process of being added and/or removed and the strong consistency of the system is guaranteed. Commissioning and decommissioning nodes within the running system enables streamlined replacement of permanently failed nodes and advantageously enables the system to adapt elastically to workload changes. An illustrative distributed barrier logic (the “view change barrier”) controls a multi-state process that controls a coordinated step-wise progression of the metadata nodes from an old view to a new normal. Rules for I/O handling govern each state until the state machine loop has been traversed and the system reaches its new normal.

An electronic device and a service discovery method in the electronic device are provided. The device includes at least one communication module, a processor operatively connected with the at least one communication module, and a memory operatively connected with the at least one communication module and the processor. The memory may store instructions configured to, when executed, enable the processor to configure a neighbor awareness network (NAN) cluster communicating with a plurality of external electronic devices based on a first communication protocol, through the at least one communication module, identify a service target device among the plurality of external electronic devices, while operating with the plurality of external electronic devices based on the first communication, and allow at least one external electronic device, except for the service target device among the plurality of external electronic devices, to deactivate at least one function related to the first communication protocol.

A method and a first node for managing transmission of at least one probe message for detection of failure of a second node are disclosed. A network comprises the first and second nodes. The first node receives a message about an event related to the second node. The message comprises an identifier of the second node and an event type of the event. The first node retrieves at least one policy for failure detection based on the event type. The first node modifies a probe list based on said at least one policy with respect to the second node. The probe list indicates an order in which nodes, neighbouring to the first node, are to be probed by transmission of the probe messages thereto. The second node is one of the nodes neighbouring to the first node. The first node transmits the probe messages according to the probe list.

A method for deduplicating a distributed ledger, a blockchain, and a computer program product. One embodiment may comprise splitting a new block on a distributed ledger into a plurality of partitions, comparing the plurality of partitions to a deduplication (dedup) map, replacing a first partition of the plurality of partitions with a first reference to the dedup map to produce a transformed block, and communicating the transformed block via a network interface to one or more peers.

A method is provided of managing a non-static collection of machines. A first client machine runs a first communication protocol. The non-static collection of machines includes a first linear communication orbit, the first linear communication orbit comprising a sequence of machines that run the first communication protocol, and a second linear communication orbit, the second linear communication orbit comprising a sequence of machines that run a second communication protocol distinct from the first communication protocol. The first client machine receives an instruction from a server to install the second communication protocol, installs the second communication protocol, and then submits a registration request to the server. The first client machine receives, from the server, contact information of a list of potential neighbors. The first client machine then, proactively constructs and maintains a respective local segment of the second linear communication orbit.

Various systems and methods for implementing a software defined industrial system are described herein. For example, an orchestrated system of distributed nodes may run an application, including modules implemented on the distributed nodes. In response to a node failing, a module may be redeployed to a replacement node. In an example, self-descriptive control applications and software modules are provided in the context of orchestratable distributed systems. The self-descriptive control applications may be executed by an orchestrator or like control device and use a module manifest to generate a control system application. For example, an edge control node of the industrial system may include a system on a chip including a microcontroller (MCU) to convert IO data. The system on a chip includes a central processing unit (CPU) in an initial inactive state, which may be changed to an activated state in response an activation signal.

Systems, methods, and techniques for supporting feature customization based on data source capability. A first request is received from an external entity to provision an instance of an application. An application service of a plurality of application services is identified to be implemented to fulfill the first request. A configuration of the application corresponding to the application service is determined. Customization information regarding states of a set of features of the application instance is obtained as a result of determining that a customization is associated with the external entity. A modified configuration is generated for the application based on the customization information and the configuration. An application instance is provisioned to the external entity over the one or more networks having the modified configuration.