class BackPressureStatsTrackerImpl implements BackPressureStatsTracker {

	@Deprecated
	public boolean triggerStackTraceSample(ExecutionJobVertex vertex) {
		synchronized (lock) {
			return triggerStackTraceSampleInternal(vertex);
		}
	}

	public  BackPressureStatsTrackerImpl(
			StackTraceSampleCoordinator coordinator,
			int cleanUpInterval,
			int numSamples,
			int backPressureStatsRefreshInterval,
			Time delayBetweenSamples);

}