Abstract: Provided are a method and apparatus for updating an edge node, a device, a medium and a program product which relate to the technical field of computers and in particular to the technical fields of edge computing, cloud computing and cloud services. In an embodiment, a module update instruction is received from a cloud server, where the module update instruction includes information about a to-be-updated module; an auxiliary unit or a master unit is used as a target module according to the information about the to-be-updated module, and the to-be-updated module is updated through the target module; and in a process of updating the to-be-updated module, data interaction is performed between the target module and the cloud server.

Abstract: An objective of the present disclosure is to provide a method and apparatus for accessing time series data. The method according to the present disclosure comprises: acquiring time series query information; determining corresponding time offset information based on the time series query information, the time offset information including hour information, minute information, and offset information; finding a leaf node in a time tree corresponding to the time offset information based on the time offset information; and querying in the leaf node based on the offset information, to acquire corresponding time series data. Advantages of the present disclosure lie in possessing a lower complexity and improving query efficiency of the time series data. In addition, the memory is less occupied, and out-of-order writing is supported.

Abstract: A query processing method. A server node parses a query request and generates a corresponding logical plan; judges the logical plan belonging to an OLAP scale query service or an OLTP scale query service; in response to judging that the logical plan belongs to the OLAP scale query service, segmenting the logical plan into logical subplans. A coordinator node generates a first physical plan corresponding to the logical plan, and feeds back the first physical plan to the server node. The server node assigns each of the logical subplans to the corresponding worker node according to the first physical plan. The worker node processes the corresponding logical subplan to obtain a query subresult, and reports the processing subresult layer by layer. The server node summarizes the received processing subresult, generates a final query result, and feeds back the final query result to a user.

Abstract: Provided are a method and apparatus for updating an edge node, a device, a medium and a program product which relate to the technical field of computers and in particular to the technical fields of edge computing, cloud computing and cloud services. In an embodiment, a module update instruction is received from a cloud server, where the module update instruction includes information about a to-be-updated module; an auxiliary unit or a master unit is used as a target module according to the information about the to-be-updated module, and the to-be-updated module is updated through the target module; and in a process of updating the to-be-updated module, data interaction is performed between the target module and the cloud server.

Abstract: A query processing method. A server node parses a query request and generates a corresponding logical plan; judges the logical plan belonging to an OLAP scale query service or an OLTP scale query service; in response to judging that the logical plan belongs to the OLAP scale query service, segmenting the logical plan into logical subplans. A coordinator node generates a first physical plan corresponding to the logical plan, and feeds back the first physical plan to the server node. The server node assigns each of the logical subplans to the corresponding worker node according to the first physical plan. The worker node processes the corresponding logical subplan to obtain a query subresult, and reports the processing subresult layer by layer. The server node summarizes the received processing subresult, generates a final query result, and feeds back the final query result to a user.

Abstract: A query processing method is provided. A server node parses a query request and generates a corresponding logical plan; judges the logical plan belonging to an OLAP scale query service or an OLTP scale query service; in response to judging that the logical plan belongs to the OLAP scale query service, segmenting the logical plan into logical subplans. A coodinator node generates a first physical plan corresponding to the logical plan, and feeds back the first physical plan to the server node. The server node assigns each of the logical subplans to the corresponding worker node according to the first physical plan. The worker node processes the corresponding logical subplan to obtain a query subresult, and reports the processing subresult layer by layer. The server node summarizes the received processing subresult, generats a final query result, and feeds back the final query result to a user.

Abstract: An objective of the present disclosure is to provide a method and apparatus for accessing time series data. The method according to the present disclosure comprises: acquiring time series query information; determining corresponding time offset information based on the time series query information, the time offset information including hour information, minute information, and offset information; finding a leaf node in a time tree corresponding to the time offset information based on the time offset information; and querying in the leaf node based on the offset information, to acquire corresponding time series data. Advantages of the present disclosure lie in possessing a lower complexity and improving query efficiency of the time series data. In addition, the memory is less occupied, and out-of-order writing is supported.