International Business Machines Corporation

Mai Zeng

Yu Mei Dai

Hui Wang

Si Bin Fan

Wei Li

Xiao Li

Serge Bourbonnais

Jonathan W Wierenga

Xing Jun Zhou

Xiao Chen Huang

Wei Liu

Hong Li

Wen Liu

Wei Ying Yu

Xiang Yu Xue

Peng Hui Jiang

Cheng Fang Wang

Yong Wu

Zhi Jun Wang

Wei Song

Xin Dong

Ming Qiao Shang Guan

Wei H Liu

Zhi Dan Hao

Xin Xin Lv

Jiong Fan

Si Jun Gz Zhou

De Ting Hu

Shuo Li

Xin Yang

Jing Cheng

Xiang Sean Zhou

Xue Yong Zhang

Bo Chen Zhu

Liang Xu

Yi Jie Ma

Kang Yong Ying

Yi J Yj

Jing B J Ren

A method, computer system, and a computer program product are provided for managing an accelerated shutdown of a networked system having a having a plurality of nodes. The system to be shutdown is analyzed and a priority order is determined for the nodes. An interval period is also determined between each node according to the priority order. A leaf node set is constructed according to different shutdown types required for each node and a dependency tree is constructed by analyzing the leaf node sets. Each node is then shutdown according to the tree and the interval period determined. The dependency tree and the interval period is iteratively modified during the node shutdown until all nodes and ultimately the system shutdown has been completed.

Techniques for shutdown acceleration

Shutdown intervals between nodes of a dependency tree are determined. The dependency tree represents a system to be shut down and the nodes represent system components of the system. The determining the shutdown intervals includes calculating, for a pair of nodes of the dependency tree, a shutdown interval. The calculating is based on a relationship between the pair of nodes. The calculating is repeated for a plurality of pairs of nodes to obtain a plurality of shutdown intervals. The plurality of shutdown intervals is used in a shutdown of the system components. At least one system component represented by at least one node on a higher node level of the dependency tree is to be shut down prior to at least one other system component represented by at least one other node on a lower node level of the dependency tree.

System shutdown based on tuned shutdown intervals

In computer methods and systems for operating a database management system using a catalog table collection module each table in the database management system is cataloged. Multiple tables are automatically dispatched into multiple consistency groups by collecting real-time statistics using a real time statistics module. Workload profile data of the database management system is generated using a workload profile collection module, and an optimized multiple consistency group definition for the database management system is generated using a transaction splitting analysis module.

Automatic dispatch of multiple tables into consistency groups within an active-active solution

A system and/or method that can reduce impact of network latency can be provided. Information associated with a user device participating in an online meeting can be determined, for user devices connecting to the online meeting. Based on the information, the user devices can be grouped. For each of the user devices in a group, network quality associated with network connection between a user device in the group and a server managing the online meeting can be evaluated. Based on the network quality, at least one user device in the group can be designated to operate as a sharer device to at least one other user device in the group. The sharer device can be caused to stream data directly from the server during the online meeting. That one other user device can be caused to connect with and stream data from the sharer device.

Network latency impact reduction

Embodiments of the invention are directed to data replication in an active-active databases having a source site and a target site. Aspects include creating a subscription activation message in a capture address space, the subscription activation message having a timestamp after a latest committed timestamp of the active-active databases and transmitting the subscription activation message to a subscription activation module of the target site of the active-active databases. Based on a determination that one or more tables associated with the subscription activation message are inactive, aspects also include repairing the one or more tables. Based on a determination that all tables associated with the subscription activation message are active, aspects include initiate replication of the capture address space from the source site to the target site with a timestamp of the latest committed timestamp.

Data replication in an active-active databases

In an embodiment, a computer-implemented method comprises deploying a dual-active database on a first active database site and a second active database site. The first active database site comprises a first group of disks including a first sub-group of disks and a second sub-group of disks respectively corresponding to a third sub-group of disks and a fourth sub-group of disks included in a second group of disks in the second active database site. The method further comprises storing a first set of database logs on the first sub-group of disks while a second set of database logs is being written on the second sub-group of disks. Contents of the second set of database logs are consistent with contents of the first set of database logs and function as a duplication of the first set of database logs.

Dual-active database for data protection

A method, computer program product, and system for generating and embedding a watermark in digital video frame include a processor obtaining a request to generate a watermark and embed the watermark in a digital video frame captured by a first monitor. Based on obtaining the request, the processor fetches from one or more pre-defined regions of a memory resource, digital video data captured by at least two monitors, where a timestamp of the digital video data is equal to a timestamp of the digital video frame. The processor generates a watermark from the digital video data by calculating a binary result of the digital video data. The processor embeds the watermark (binary result) in the digital video frame.

Multiple source watermarking for surveillance

A method, system and computer program product for processing data are provided. In the method, a request is received to perform an access-controlled operation in a user device. A biometric feature input from an input module of the user device is received for the request. It is determined whether the received biometric feature matching with a primary biometric feature, the primary biometric feature being identified from a plurality of biometric features stored in the user device and being used to authenticate a user for the access-controlled operation. The access-controlled operation is enabled in response to determining the received biometric feature matching with a primary biometric feature.

User authentication

A method for verifying data consistency between update-in-place data structures and append-only data structures containing change histories associated with the update-in-place data structures is provided. The method includes loading data from an update-in-place data structure to a first set of hash buckets in a processing platform, loading data from append-only data structures to a second set of hash buckets in the processing platform, performing a bucket-level comparison between the data in the first set of hash buckets and the data in the second set of has buckets, and generating a report based on the bucket-level comparison.

Verifying data consistency

Systems, methods, and computer-readable media are described for implementing an active-active transaction protocol according to which multiple sites can each provide active services such as executing update transactions that insert, modify, or delete data records. An active-active transaction protocol utilizes affinity records corresponding to both transactions that have been received as well as the data records those transactions are updating to determine which site should handle execution of an incoming update transaction. An affinity record defines a relationship between a data record and a site that determines whether and where a transaction seeking to update that data record will be routed for processing. Conflict handling mechanisms are also provided by the active-active transaction protocol to ensure data consistency between the multiple sites.

Workload management across multiple data sites capable of providing active services

This disclosure provides a method and system for protecting phone numbers from being exposed to third parties. The method comprises receiving a request, from a caller smart phone, for establishing telephone communication with a callee smart phone, wherein the request contains a code to designate the smart phone of the callee. The method further comprises checking whether the code is formally provided to the callee. The method further comprises: in response to determining that the code is formally provided to the caller, retrieving the phone number of the caller and the phone number of the callee based on the request and establishing a phone call connection via a cellular network with the phone number of the caller and the phone number of the callee.

Phone number protection system

A computing system includes a first storage unit at a first computing site. The first storage unit stores units of work data and data synchronously replicated from a first server cluster of a second computing site. The system further includes a second server cluster at the first computing site, the second server cluster is a proxy node of the first server cluster. The system further includes a second storage unit at the first computing site, the second storage unit stores the units of work data and data from the first storage unit asynchronously into the second storage unit. The system further includes a third server cluster at the first computing site, the third server cluster processes the units of work data asynchronously replicated into the second storage unit.

Zero-data loss recovery for active-active sites configurations

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Beijing, China

Mai Zeng