Abstract: A main data center with first and second backup data centers also has a translator for assisting a failover module of a failed server at the main data center in implementing failover of the failed server to a corresponding server at the first backup data center. The translator intercepts a command from the failover module to a store of the main data center, where the command directs the store to disable writes to particular storage space in the store associated with the failed server, but does not identify with specificity which of a store of the first data center and a store of the second data center is enabled to write to such particular storage space. Thus, the translator determines an identification of the store of the first backup data center, and modifies the command from the failover module based on the determined identification.

Abstract: A method and system permit a backup entity of a redundant apparatus of a communication system that shares control of hardware resources or other network resources with an active entity to indirectly determine a status of the active entity based upon behavior and reaction to actions it takes in connection with resources it shares control of with the active entity. Such a method and system permit the backup entity to deduce the state of the active entity without having any a hardware connection or other communication connection with the active entity.

Abstract: A method for recovering a failed storage drive in a redundant array of independent disks (RAID) includes storing, on a first distributed spare of the RAID, a first parity subset for a first set of drives in the RAID. The method further stores, on a second distributed spare of the RAID, a second parity subset for a second set of drives in the RAID. In the event a storage drive in the RAID fails, the method determines whether the storage drive belongs to the first set or second set. In the event the failed storage drive belongs to the first set, the method uses the first parity subset on the first set of drives in the RAID to recover the failed storage drive. In the event the failed storage drive belongs to the second set, the method uses the second parity subset on the second set of drives in the RAID to recover the failed storage drive. A corresponding system and computer program product are also disclosed.

Abstract: Techniques for rotating leadership among processes in multiple data centers are provided. A first process of a program in a first data center determines whether the first process is a leader process among multiple processes of the program. Each process of the multiple processes executes in a different data center of the multiple data centers. In response to determining that the first process is the leader process, the first process performs a particular task. After performing the particular task, the first process causes leadership data to be updated to indicate that the first process is no longer the leader process. After the leadership data is updated, a second process (of the multiple processes) in a second data center determines whether the second process is the leader process. The second process performs the particular task only if the second process determines that the second process is the leader process.

Abstract: A method for data communication within an I2C system is provided. The method includes the steps of: a) generating a communication error code indicative of error status when data transmission from a master module to a slave module via an I2C bus fails; b) determining whether to retransmit the data to the slave module according to the communication error code; c) when the determination made in step c) is affirmative, determining whether a number of times of data retransmission(s) associated with the data reaches a predetermined number; d) when the determination made in step c) is affirmative, resetting the master module; and e) recording a communication error event according to the communication error code after step a).

Abstract: The subject technology provides a drillable time-series heat map, which combines information of separate network element (e.g., switch, router, server or storage) and relates them together through impact zones to correlate network wide events and the potential impact on the other units in the network. The subject technology also brings together the network and its components, the distributed application(s) and a heat map controller to proactively communicate with one another to disseminate information such as failures, timeouts, new jobs, etc. For an individual job (e.g., for a distributed application), the subject technology may monitor consumption of resources during different phases of execution to provide individual job profile data that could be presented as a drillable heat map. The heat map, in this regard, nay include resource utilization heat metrics of resources such as CPU, Input/Output (I/O), memory, etc., in the heat map or graphs and presented along with network activity.

Abstract: A non-volatile memory apparatus including a non-volatile storage circuit, a main memory and a controller, and an operating method thereof are provided. Each of a plurality of logical block address groups includes a plurality of logical block addresses. Each of the logical block address groups is assigned a group read-count value. An adjustment of the group read-count values is triggered by a read command of a host. When one read-count value of the group read-count values exceeds a preset range, the controller performs a scan operation to non-volatile storage blocks of the non-volatile storage circuit corresponding to a corresponding logical block address group of the read-count value, so as to check a number of error bits. The controller decides whether to perform a storage block data-moving operation to the non-volatile storage block corresponding to the corresponding logical block address group based on results of the scan operation.

Abstract: There are provided an electronic device, and more particularly, to a controller of a semiconductor memory device with an increased operation speed and a method of operating the same. The method of operating the controller configured to control the semiconductor memory device includes obtaining a recovery address in which recovered data stored in a page buffer of the semiconductor memory device in which the program fail is generated is to be stored, transmitting a recovery command requesting the semiconductor memory device to transmit the recovered data to the semiconductor memory device, and storing the recovered data in the recovery address. The obtaining of the recovery address, the transmitting of the recovery command, and the storing of the recovered data in the recovery address are simultaneously performed while a post-processing operation is performed on the program fail.

Abstract: Embodiments of the present invention provide a method, system and computer program product for predicting transaction server performance failure in a transaction processing environment. In an embodiment of the invention, a method for predicting transaction server performance failure in a transaction processing environment is provided. The method includes receiving a performance metric for a transaction server during nominal operation of the transaction server in memory of a computing system and comparing the performance metric to a benchmark of performance metrics for the transaction server. Thereafter, in response to the performance metric falling outside a threshold variance from the benchmark, an alert is generated of a potential impending failure of the transaction server.

Abstract: Embodiments of the present invention provide a method, system and computer program product for predicting transaction server performance failure in a transaction processing environment. In an embodiment of the invention, a method for predicting transaction server performance failure in a transaction processing environment is provided. The method includes receiving a performance metric for a transaction server during nominal operation of the transaction server in memory of a computing system and comparing the performance metric to a benchmark of performance metrics for the transaction server. Thereafter, in response to the performance metric falling outside a threshold variance from the benchmark, an alert is generated of a potential impending failure of the transaction server.

Abstract: A failover method, apparatus and system to implement fast failover between a primary processor and a secondary processor, where the method includes receiving, by a second device, a transaction processing packet, where the transaction processing packet includes processing information about access of a host to a peripheral component interconnect express (PCIe) device, the processing information is used to describe information required for resuming a transaction when the transaction is interrupted, the second device further stores topology information of the PCIe device, and a driver for the PCIe device is loaded to the second device, and when detecting that the first device fails, continuing to process, by the second device according to the topology information, the driver, and the processing information, the transaction that is about the access of the host to the PCIe device and is being processed when a first device fails.

Abstract: Some embodiments of the invention provide techniques whereby a user may perform a system reset (e.g., to address system performance and/or reliability degradation, such as which may be caused by unused applications that unnecessarily consume system resources, an attempted un-install of an application that left remnants of the application behind, and/or other causes). In some embodiments, performing a system reset replaces a first instance of an operating system on the system with a new instance of the operating system, and removes any applications installed on the system, without disturbing the user's data.

Abstract: A passive state storage controller monitors a plurality of active state storage controllers to determine when a failure of at least one of the active state storage controllers occurs. Based on a determination of a failure, the passive state storage controller remaps storage devices to the passive state storage controller from the failed storage controller. The passive state storage controller may also remap network interfaces. The passive state storage controller retrieves a transaction log of the failed storage controller from a transaction log database, and replays transactions in the retrieved transaction log. The passive state storage controller switches to operating in an active state.

Abstract: Techniques for coordinated and device-distributed detection of abnormal network device operation are provided. In some embodiments, a method may include identifying a suspicious activity condition associated with a suspect network device. The suspicious activity condition may also be associated with the device itself. Activity of the network device may be detected and analyzed, including additional data corresponding to the activity from one or more other network devices in the same network. In response to determining that the suspicious activity condition is satisfied, an alert communication can be transmitted that identifies the suspect network device. When the activity is associated with the device itself, a local operation at the network device may be changed.

Abstract: Systems and methods are provided herein for automatically configuring newly installed secondary storage computing devices and managing secondary storage computing devices when one or more become unavailable. For example, a storage manager can then detect the computing resources available to the newly installed secondary storage computing device, assign a role to the newly installed secondary storage computing device based on the detected computing resources, configure the newly installed secondary storage computing device with deduplication and storage policies used by the other secondary storage computing devices, re-partition secondary storage devices to allocate memory for the newly installed secondary storage computing device, and instruct other secondary storage computing devices to replicate their managed data such that the newly installed secondary storage computing device has access to the replicated data.

Abstract: Embodiments of the present invention provide a method for checking whether hardware of an intelligent terminal runs abnormally. The method includes: checking, by an intelligent terminal at a service layer, whether load of an intelligent terminal system exceeds a preconfigured maximum threshold; if the intelligent terminal detects that the load of the intelligent terminal system does not exceed the maximum threshold, triggering, by the intelligent terminal at the service layer, execution of determining whether hardware runs abnormally; determining, by the intelligent terminal, whether the hardware runs abnormally; determining, by the intelligent terminal, target hardware that runs abnormally; and acquiring, by the intelligent terminal, exception information of the target hardware, and notifying a user that the target hardware runs abnormally. This avoids increasing load of the intelligent terminal system and thereby ensures that the intelligent terminal runs normally.

Abstract: A method includes receiving a signal indicative of a value of a data point associated with a compute device at a first time. The value of the data point includes a data point category that is correlated with a fault category. The compute device is operatively coupled to a record module having a protected mode and an unprotected mode. A signal is received indicative of a value of the data point at a second time, after the first time. When a characteristic of a change in the value of the data point at the first time to value of the data point at the second time crosses a threshold in a first direction, a signal is sent to the record module indicative of an instruction to record data associated with the compute device in the protected mode to define a protected data set.

Abstract: A system, method and computer program product for adaptive incremental checkpointing an operator state in a streaming application. The system and method enable reduced costs of checkpointing an operator state in a streaming application, by i) logging updates to operator state and checkpointing operator state in either base (full state) or delta (logged updates) form, ii) dynamically and adaptively adjusting checkpointing options, and iii) maintaining dependencies between checkpoints to allow automatic restoration and checkpoint recycling.

Abstract: A method for validating control blocks in memory includes monitoring for operations configured to obtain storage space in memory. The method examines the storage space that has been obtained to identify control blocks stored in the storage space. These control blocks are then analyzed to determine whether the control blocks are valid. In certain embodiments, this may be accomplished by comparing the content of the control blocks to information in a validation table that indicates possible values and ranges of values for fields in the control blocks. If a control block is valid, the method records a date and time when the control block was validated. If a control block is not valid, the method generates a message indicating that the control block is not valid. A corresponding system and computer program product are also disclosed.

Abstract: A method, computer program product, and system for testing an application on a GUI are provided. A request to perform a test of an application is received. The test uses a script that includes instructions to perform real actions on a GUI of the application. Execution of the script is initiated. A test recording is generated by capturing a first plurality of screenshots of the GUI during the test. In response to detecting an error during execution of the script, a baseline video is retrieved. The baseline video includes a second plurality of screenshots of the GUI from a successful execution of the script. An error message is issued. The error message includes at least a portion of the test recording and at least a portion of the baseline video.