ExecutorAllocationListener

Caution
FIXME

ExecutorAllocationListener is a SparkListener that intercepts events about stages, tasks, and executors, i.e. onStageSubmitted, onStageCompleted, onTaskStart, onTaskEnd, onExecutorAdded, and onExecutorRemoved. Using the events ExecutorAllocationManager can manage the pool of dynamically managed executors.

Note
ExecutorAllocationListener is an internal class of ExecutorAllocationManager with full access to its internal registries.

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