public CreateBucketResult createRedundantBucket(int bucketId, boolean isRebalance,
      InternalDistributedMember moveSource) {
    // recurse down to create each tier of children after creating leader bucket
    return grabBucket(bucketId, moveSource, true, false, isRebalance, null, false);
  }
Create a new backup of the bucket, allowing redundancy to be exceeded. All colocated child
buckets will also be created.

@param bucketId the bucket to create
@param isRebalance true if bucket creation is directed by rebalancing
@return true if the bucket and its colocated chain of children are created
geode-core/src/main/java/org/apache/geode/internal/cache/PartitionedRegionDataStore.java