private void removeAndCancelEstimate(EstimateMapKey key) {
    LoadEstimateTask oldTask;
    oldTask = estimateMap.remove(key);
    if (oldTask != null) {
      oldTask.cancel();
    }
  }
Remove and cancel any task estimate mapped to the given key.
geode-core/src/main/java/org/apache/geode/distributed/internal/LocatorLoadSnapshot.java