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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.regionserver;
 
 
RegionServerAccounting keeps record of some basic real time information about the Region Server. Currently, it only keeps record the global memstore size.
 
 public class RegionServerAccounting {
 
   private final AtomicLong atomicGlobalMemstoreSize = new AtomicLong(0);
   
   // Store the edits size during replaying HLog. Use this to roll back the  
   // global memstore size once a region opening failed.
   private final ConcurrentMap<byte[], AtomicLongreplayEditsPerRegion = 

Returns:
the global Memstore size in the RegionServer
 
   public long getGlobalMemstoreSize() {
     return .get();
   }
  
  

Parameters:
memStoreSize the Memstore size will be added to the global Memstore size
Returns:
the global Memstore size in the RegionServer
 
   public long addAndGetGlobalMemstoreSize(long memStoreSize) {
     return .addAndGet(memStoreSize);
   }
  
  
Add memStoreSize to replayEditsPerRegion.

Parameters:
regionName region name.
memStoreSize the Memstore size will be added to replayEditsPerRegion.
Returns:
the replay edits size for the region.
 
   public long addAndGetRegionReplayEditsSize(byte[] regionNamelong memStoreSize) {
     AtomicLong replayEdistsSize = .get(regionName);
     if (replayEdistsSize == null) {
       replayEdistsSize = new AtomicLong(0);
       .put(regionNamereplayEdistsSize);
     }
     return replayEdistsSize.addAndGet(memStoreSize);
   }

  
Roll back the global MemStore size for a specified region when this region can't be opened.

Parameters:
regionName the region which could not open.
Returns:
the global Memstore size in the RegionServer
 
   public long rollbackRegionReplayEditsSize(byte[] regionName) {
     AtomicLong replayEditsSize = .get(regionName);
     long editsSizeLong = 0L;
     if (replayEditsSize != null) {
       editsSizeLong = -replayEditsSize.get();
       clearRegionReplayEditsSize(regionName);
     }
     return addAndGetGlobalMemstoreSize(editsSizeLong);
   }

  
Clear a region from replayEditsPerRegion.

Parameters:
regionName region name.
 
   public void clearRegionReplayEditsSize(byte[] regionName) {
     .remove(regionName);
   }
   
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