public void closeBucketAdvisors() {
    if (buckets != null) {
      for (ProxyBucketRegion pbr : buckets) {
        pbr.close();
      }
    }
  }
Close the bucket advisors, releasing any locks for primary buckets
geode-core/src/main/java/org/apache/geode/internal/cache/partitioned/RegionAdvisor.java