| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.protocolPB | Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements. | 
| org.apache.hadoop.hdfs.shortcircuit | 
| Class and Description | 
|---|
| ShortCircuitShm.ShmId Identifies a DfsClientShm. | 
| ShortCircuitShm.SlotId Uniquely identifies a slot. | 
| Class and Description | 
|---|
| DfsClientShm DfsClientShm is a subclass of ShortCircuitShm which is used by the
 DfsClient. | 
| DfsClientShmManager.PerDatanodeVisitorInfo | 
| DomainSocketFactory.PathInfo | 
| DomainSocketFactory.PathState | 
| ShortCircuitReplicaInfo | 
| ShortCircuitShm A shared memory segment used to implement short-circuit reads. | 
| ShortCircuitShm.ShmId Identifies a DfsClientShm. | 
| ShortCircuitShm.Slot A slot containing information about a replica. | 
| ShortCircuitShm.SlotId Uniquely identifies a slot. | 
| ShortCircuitShm.SlotIterator | 
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