Abstract: A system for updating a file and resolving conflict in updating of the file in a distributed file store is disclosed. The system includes a receiver, an updater, and a conflict detector. The receiver receives the file formed of a plurality of extents to be updated. An extent is indicative of a piece of data content of the file and formed of a plurality of packets of substantially equal size. The receiver further receives instructions indicative of one or more extents of the file in which the updates are to be made. The updater updates one or more packets, based on the instructions. The conflict detector detects that a portion of the file is being currently updated, receives a request to update the same portion from another application, and decline the request by the other application to update the same portion to resolve the conflict.

Abstract: Implementing a naming service for a hierarchal namespace in a database format. A method includes at a database, wherein the database stores a first table having references to hierarchical nodes in a hierarchical namespace, and a second table with relational references to hierarchical nodes referenced in the first table, detecting an edge modification event changing one or more edges of a node in the hierarchical namespace. The method further includes, as a result, creating a unique row in the second table for the edge modification event in the hierarchical namespace. Any edge modification event results in creation of a unique row in the second table such that different entities can cause overlapping edge modification events that can be documented at the database without transactional conflicts.

Abstract: A naming service for a hierarchical namespace. The naming service includes a database system with a first table having first records. Each of the first records is for a hierarchical node and includes a node identifier and an ACL identifier to a set of access control rules applicable to the node. The database system includes a second table including second records, each record in the second records has one of the ACL identifiers from the first table correlated with a definition access control rules in the set of access control rules. The naming service includes an access control rule identifier generator configured to detect a set of access control rules for each node in the namespace and generate an a ACL identifier for each set of access control rules that can be stored in records in the first table and stored in records in the second table.

Abstract: A system for updating a file and resolving conflict in updating of the file in a distributed file store is disclosed. The system includes a receiver, an updater, and a conflict detector. The receiver receives the file formed of a plurality of extents to be updated. An extent is indicative of a piece of data content of the file and formed of a plurality of packets of substantially equal size. The receiver further receives instructions indicative of one or more extents of the file in which the updates are to be made. The updater updates one or more packets, based on the instructions. The conflict detector detects that a portion of the file is being currently updated, receives a request to update the same portion from another application, and decline the request by the other application to update the same portion to resolve the conflict.

Abstract: A naming service for a hierarchical namespace. The naming service includes a database system with a first table having first records. Each of the first records is for a hierarchical node and includes a node identifier and an ACL identifier to a set of access control rules applicable to the node. The database system includes a second table including second records, each record in the second records has one of the ACL identifiers from the first table correlated with a definition access control rules in the set of access control rules. The naming service includes an access control rule identifier generator configured to detect a set of access control rules for each node in the namespace and generate an a ACL identifier for each set of access control rules that can be stored in records in the first table and stored in records in the second table.

Abstract: Implementing a naming service for a hierarchal namespace in a database format. A method includes at a database, wherein the database stores a first table having references to hierarchical nodes in a hierarchical namespace, and a second table with relational references to hierarchical nodes referenced in the first table, detecting an edge modification event changing one or more edges of a node in the hierarchical namespace. The method further includes, as a result, creating a unique row in the second table for the edge modification event in the hierarchical namespace. Any edge modification event results in creation of a unique row in the second table such that different entities can cause overlapping edge modification events that can be documented at the database without transactional conflicts.

Abstract: A method, apparatus and computer-usable medium for the steps of (1) establishing a first Instant messaging (IM) session with a first user login identifier (ID) on a first client device with a first network routing address; and, when a request to establish a next IM session with the same first user login ID is received from a second client device while the first IM session is active, dynamically enabling a seamless continuation of the first IM session on the second client device.