@Override
  public void close() {
    IOUtils.closeQuietly(this.admin, e -> LOG.warn("failed to close admin", e));
    IOUtils.closeQuietly(this.conn, e -> LOG.warn("failed to close conn", e));
  }
Tool for loading/unloading regions to/from given regionserver This tool can be run from Command
line directly as a utility. Supports Ack/No Ack mode for loading/unloading operations.Ack mode
acknowledges if regions are online after movement while noAck mode is best effort mode that
improves performance but will still move on if region is stuck/not moved. Motivation behind noAck
mode being RS shutdown where even if a Region is stuck, upon shutdown master will move it
anyways. This can also be used by constructiong an Object using the builder and then calling
{@link #load()} or {@link #unload()} methods for the desired operations.
hbase-server/src/main/java/org/apache/hadoop/hbase/util/RegionMover.java