A method, system, and computer program product for maintaining data centers obtain input data; communicate an update request associated with the input data to a node of a plurality of nodes; receive an indication that the update request failed; communicate a result request for result data associated with processing of the input data to the node of the plurality of nodes until the result data associated with processing of the input data is received; and in response to receiving the result data associated with processing of the input data from the node, process the result data.

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.

Domain-based server-selection computer-implemented processes and machines implement an extension of RAFT consensus for leader selection based on patterns of update data proximity. Accounts involved in payment or other transactions are maintained as “sharded” data across data store instances that are split into shards according to their temporal activity. If the domain attributes for a node exceed a threshold and are greater than the other nodes, the node is designated as a leader node and the others are designated as follower nodes. This provides an additional optimization in network performance by introducing insights in normal operations within a domain in a distributed network. If the domain attributes do not exceed the threshold and/or are not greater than the other nodes, a traditional consensus algorithm is used to select leader and follower nodes.

A field data transmission method comprises: a cloud platform determining at least one first device operation index be obtained via data analysis. For each first device operation index, the cloud platform generates control information for the first device operation index. The control information is used to determine a primary edge controller from among at least one edge controller, wherein the primary edge controller is used to send first field data to the cloud platform, the first field data is used for data analysis by the cloud platform to obtain the first device operation index, and the first field data is obtained by the primary edge controller preprocessing second field data. The cloud platform sends each piece of control information to each edge controller, respectively. The cloud platform receives first field data from each primary edge controller, respectively.

A method, system, and computer program product for maintaining data centers obtain input data; communicate an update request associated with the input data to a node of a plurality of nodes; receive an indication that the update request failed; communicate a result request for result data associated with processing of the input data to the node of the plurality of nodes until the result data associated with processing of the input data is received; and in response to receiving the result data associated with processing of the input data from the node, process the result data.

Examples herein describe techniques for communicating between data processing engines in an array of data processing engines. In one embodiment, the array is a 2D array where each of the DPEs includes one or more cores. In addition to the cores, the data processing engines can include streaming interconnects which transmit streaming data using two different modes: circuit switching and packet switching. Circuit switching establishes reserved point-to-point communication paths between endpoints in the interconnect which routes data in a deterministic manner. Packet switching, in contrast, transmits streaming data that includes headers for routing data within the interconnect in a non-deterministic manner. In one embodiment, the streaming interconnects can have one or more ports configured to perform circuit switching and one or more ports configured to perform packet switching.

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.

The present disclosure relates to the field of Internet of Things, and in particular, to an online upgrade method and apparatus for a Bluetooth cluster. The online upgrade method for the Bluetooth cluster includes: an upgrade device selects a central node in the Bluetooth cluster and establishes a Bluetooth connection with the central node; the upgrade device selects an upgrade path, and sends upgrade data to a to-be-upgraded device through the central node according to the upgrade path, enabling the to-be-upgraded device to obtain the upgrade data to achieve an upgrade, where the to-be-upgraded device includes a part or all of Bluetooth devices in the Bluetooth cluster. The online upgrade method of the Bluetooth cluster adopted in the present disclosure further broadens a communication range of the Bluetooth, which requires no one-to-one operation by a user.

Systems, methods, and other embodiments associated with distributed primary identifier management in a multi-master database system are described. One embodiment includes: Receiving a request to add a new master node to a multi-master database environment. Retrieving the next available master node number from a master node counter for the database environment. Generating a numeric base for primary identifiers of data objects of the new master node by deriving high order bits of the numeric base from the retrieved master node number. Configuring the new master node to assign the next unassigned number in a sequence of numbers beginning with the numeric base as the primary identifier for each data object created by the new master node. Add the new master node to the database environment. In one embodiment, the numeric base is generated by replacing the leading bits of the primary identifier range with the reversed the binary equivalent of the node number of the new master node.

Systems, methods, and other embodiments associated with distributed primary identifier management in a multi-master database system are described. One embodiment includes adding a new master node to a system with a plurality of master nodes. Assigning a master node number to the new master node in relation to the plurality of master nodes. The master node number is converted into a binary value and a reverse bit order of the master node number is generated. The new master node is configured to assign primary identifiers within an address space to data objects, wherein the primary identifiers include the reverse bit order of the master node number to reduce collisions between the data objects.