| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.common.blockaliasmap.impl | |
| org.apache.hadoop.hdfs.server.namenode | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | LevelDBFileRegionAliasMapA LevelDB based implementation of  BlockAliasMap. | 
| class  | TextFileRegionAliasMapThis class is used for block maps stored as text files,
 with a specified delimiter. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | NullBlockAliasMapNull sink for region information emitted from FSImage. | 
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