synchronized boolean isRebalancing() {
    return rebalancing;
  }
In order to keep from ping-ponging clients around the cluster we don't move a client unless
imbalance is greater than the loadImbalanceThreshold.
<p>
When the threshold is reached we report imbalance until proper balance is achieved.
<p>
This method has the side-effect of setting the <code>rebalancing</code> instance variable
which, at the time of this writing, is only used by this method.
<p>
geode-core/src/main/java/org/apache/geode/distributed/internal/LocatorLoadSnapshot.java