public void start() {
    final InternalResourceManager manager = cache.getInternalResourceManager();
    synchronized (futureLock) {
      manager.addInProgressRebalance(this);
      scheduleRebalance();
    }
  }
Implements {@code RebalanceOperation} for rebalancing Cache resources.
geode-core/src/main/java/org/apache/geode/internal/cache/control/RebalanceOperationImpl.java