Task priority control implementation method and device for Spark JDBC
A technology of task priority and implementation method, applied in the field of task priority control for SparkJDBC, can solve problems such as affecting business applications, unable to schedule resources, unable to retrieve SQL priority control, etc., to achieve the effect of improving usability and large application prospects
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[0039] The invention provides a method for implementing Spark JDBC-oriented task priority control. Including the method of establishing multiple task priority queues in SparkJDBC; the method of mapping the retrieval SQL submitted by the user to the task priority queue waiting to be run in Spark JDBC; setting the execution limit for each task priority queue in Spark JDBC, Reject the method of retrieving SQL over quota; the method of hardware resource scheduling based on preset priorities and weights between task priority queues; within a single task priority queue, use the "first in first out" strategy or "fair" strategy The method of hardware resource scheduling. Using the embodiments of the present invention can meet the needs of flexible control of hardware resource usage through the JDBC interface in actual business use; and meet the execution sequence requirements of urgent tasks, general tasks and low-priority tasks in business use.
[0040] Hereinafter, exemplary embodimen...
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