@InterfaceAudience.Public @InterfaceStability.Unstable public class LevelDBFileRegionAliasMap extends BlockAliasMap<FileRegion> implements Configurable
BlockAliasMap.| Modifier and Type | Field and Description | 
|---|---|
| static org.slf4j.Logger | LOG | 
| Constructor and Description | 
|---|
| LevelDBFileRegionAliasMap() | 
| Modifier and Type | Method and Description | 
|---|---|
| void | close() | 
| Configuration | getConf()Return the configuration used by this object. | 
| org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Reader<FileRegion> | getReader(org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Reader.Options opts,
         String blockPoolID)Returns a reader to the alias map. | 
| org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Writer<FileRegion> | getWriter(org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Writer.Options opts,
         String blockPoolID)Returns the writer for the alias map. | 
| void | refresh()Refresh the alias map. | 
| void | setConf(Configuration conf)Set the configuration to be used by this object. | 
public void setConf(Configuration conf)
ConfigurablesetConf in interface Configurableconf - configuration to be usedpublic Configuration getConf()
ConfigurablegetConf in interface Configurablepublic org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Reader<FileRegion> getReader(org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Reader.Options opts, String blockPoolID) throws IOException
BlockAliasMapgetReader in class BlockAliasMap<FileRegion>opts - reader optionsblockPoolID - block pool id to useBlockAliasMap.Reader to the alias map. If a Reader for the blockPoolID
 cannot be created, this will return null.IOExceptionpublic org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Writer<FileRegion> getWriter(org.apache.hadoop.hdfs.server.common.blockaliasmap.BlockAliasMap.Writer.Options opts, String blockPoolID) throws IOException
BlockAliasMapgetWriter in class BlockAliasMap<FileRegion>opts - writer options.blockPoolID - block pool id to useBlockAliasMap.Writer to the alias map.IOExceptionpublic void refresh()
             throws IOException
BlockAliasMaprefresh in class BlockAliasMap<FileRegion>IOExceptionpublic void close()
           throws IOException
close in class BlockAliasMap<FileRegion>IOExceptionCopyright © 2023 Apache Software Foundation. All rights reserved.