Coordinator is the central component of NES and is responsible for processing user requests, scheduling queries, and managing the life-cycle of query execution. This component allows the user to interact with it via the REST interface. The user has the option to:

  • Submit a query
  • Remove a query
  • Check status of a query
  • List currently running queries
  • Register a new logical source (explanation to be added)
  • Fetch information about an existing logical stream
  • List all physical sources (explanation to be added) for a given logical source, etc

In the current version of NES, the coordinator is the single-point-of-failure for the entire cluster. This means if the Coordinator is shut-down for some reason, all running queries will be terminated.

coordinator.txt · Last modified: 2022/03/04 17:23 by
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