@Override
  protected void handleException(Throwable t) {
    server.abort("Unrecoverable exception while closing " + this.regionInfo.getRegionNameAsString(),
      t);
  }
This method used internally by the RegionServer to close out regions.
@param abort If the regionserver is aborting.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/handler/CloseRegionHandler.java