类 org.apache.hadoop.fs.BlockLocation
的使用

使用BlockLocation的程序包

程序包	说明
org.apache.hadoop.fs	An abstract file system API.
org.apache.hadoop.fs.kfs	A client for the Kosmos filesystem (KFS) Introduction This pages describes how to use Kosmos Filesystem ( KFS ) as a backing store with Hadoop.
org.apache.hadoop.hdfs	A distributed implementation of FileSystem.
org.apache.hadoop.hdfs.web
org.apache.hadoop.mapred	A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.
org.apache.hadoop.mapreduce.lib.input

org.apache.hadoop.fs中BlockLocation的使用

返回BlockLocation的org.apache.hadoop.fs中的方法

限定符和类型	方法和说明
BlockLocation[]	HarFileSystem.getFileBlockLocations(FileStatus file, long start, long len) Get block locations from the underlying fs and fix their offsets and lengths.
BlockLocation[]	FilterFileSystem.getFileBlockLocations(FileStatus file, long start, long len)
BlockLocation[]	FileSystem.getFileBlockLocations(FileStatus file, long start, long len) Return an array containing hostnames, offset and size of portions of the given file.

org.apache.hadoop.fs.kfs中BlockLocation的使用

返回BlockLocation的org.apache.hadoop.fs.kfs中的方法

限定符和类型	方法和说明
BlockLocation[]	KosmosFileSystem.getFileBlockLocations(FileStatus file, long start, long len) Return null if the file doesn't exist; otherwise, get the locations of the various chunks of the file file from KFS.

org.apache.hadoop.hdfs中BlockLocation的使用

返回BlockLocation的org.apache.hadoop.hdfs中的方法

限定符和类型	方法和说明
BlockLocation[]	DFSClient.getBlockLocations(String src, long start, long length) Get block location info about file getBlockLocations() returns a list of hostnames that store data for a specific file region.
BlockLocation[]	DistributedFileSystem.getFileBlockLocations(FileStatus file, long start, long len)
static BlockLocation[]	DFSUtil.locatedBlocks2Locations(LocatedBlocks blocks) Convert a LocatedBlocks to BlockLocations[]

org.apache.hadoop.hdfs.web中BlockLocation的使用

返回BlockLocation的org.apache.hadoop.hdfs.web中的方法

限定符和类型	方法和说明
BlockLocation[]	WebHdfsFileSystem.getFileBlockLocations(FileStatus status, long offset, long length)

org.apache.hadoop.mapred中BlockLocation的使用

参数类型为BlockLocation的org.apache.hadoop.mapred中的方法

限定符和类型	方法和说明
protected int	FileInputFormat.getBlockIndex(BlockLocation[] blkLocations, long offset)
protected String[]	FileInputFormat.getSplitHosts(BlockLocation[] blkLocations, long offset, long splitSize, NetworkTopology clusterMap) This function identifies and returns the hosts that contribute most for a given split.

org.apache.hadoop.mapreduce.lib.input中BlockLocation的使用

返回BlockLocation的org.apache.hadoop.mapreduce.lib.input中的方法

限定符和类型	方法和说明
protected BlockLocation[]	CombineFileInputFormat.getFileBlockLocations(FileSystem fs, FileStatus stat)

参数类型为BlockLocation的org.apache.hadoop.mapreduce.lib.input中的方法

限定符和类型	方法和说明
protected int	FileInputFormat.getBlockIndex(BlockLocation[] blkLocations, long offset)