@Override
    public void recoveryStarted(Region<?, ?> region) {
      rebalancingOrRecoveryStarted(region);
    }
Indicates that a bucket primary is being moved from the source member to the target member.

@param region the region
@param bucketId the bucket primary being moved
@param source the member the bucket primary is moving from
@param target the member the bucket primary is moving to
geode-core/src/main/java/org/apache/geode/internal/cache/control/InternalResourceManager.java