General Concepts:
Components:
Features:
Configuration:
HowTo's:
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API's:
Client Applications:
Testing:
Functionality:
CoordinatorCoordinator 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:
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. |