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 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.hadoop.hbase.master;
Get notification of assignment events. The invocations are inline so make sure your implementation is fast else you'll slow hbase.
public interface AssignmentListener {
  
The region was opened on the specified server.

Parameters:
regionInfo The opened region.
serverName The remote servers name.
  void regionOpened(final HRegionInfo regionInfofinal ServerName serverName);

  
The region was closed on the region server.

Parameters:
regionInfo The closed region.
serverName The remote servers name.
  void regionClosed(final HRegionInfo regionInfo);
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