| Package | Description | 
|---|---|
| org.apache.hadoop.hbase.util | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | SoftObjectPool<K,V>A  SoftReferencebased shared object pool. | 
| class  | WeakObjectPool<K,V>A  WeakReferencebased shared object pool. | 
| Modifier and Type | Field and Description | 
|---|---|
| private ObjectPool<T,ReentrantReadWriteLock> | IdReadWriteLock. lockPoolThe pool to get entry from, entries are mapped by  Referenceand will be automatically
 garbage-collected by JVM | 
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