Package | Description |
---|---|
org.apache.hadoop.hdfs |
A distributed implementation of
FileSystem . |
Modifier and Type | Class and Description |
---|---|
class |
RemoteBlockReader
Deprecated.
this is an old implementation that is being left around
in case any issues spring up with the new
RemoteBlockReader2 implementation.
It will be removed in the next release. |
class |
RemoteBlockReader2
This is a wrapper around connection to datanode
and understands checksum, offset etc.
|
Modifier and Type | Method and Description |
---|---|
protected BlockReader |
DFSInputStream.getBlockReader(InetSocketAddress dnAddr,
DatanodeInfo chosenNode,
String file,
ExtendedBlock block,
Token<BlockTokenIdentifier> blockToken,
long startOffset,
long len,
int bufferSize,
boolean verifyChecksum,
String clientName)
Retrieve a BlockReader suitable for reading.
|
static BlockReader |
BlockReaderFactory.newBlockReader(DFSClient.Conf conf,
String file,
ExtendedBlock block,
Token<BlockTokenIdentifier> blockToken,
long startOffset,
long len,
boolean verifyChecksum,
String clientName,
Peer peer,
DatanodeID datanodeID,
org.apache.hadoop.hdfs.DomainSocketFactory domSockFactory,
org.apache.hadoop.hdfs.PeerCache peerCache,
org.apache.hadoop.hdfs.FileInputStreamCache fisCache,
boolean allowShortCircuitLocalReads,
CachingStrategy cachingStrategy)
Create a new BlockReader specifically to satisfy a read.
|
static BlockReader |
RemoteBlockReader2.newBlockReader(String file,
ExtendedBlock block,
Token<BlockTokenIdentifier> blockToken,
long startOffset,
long len,
boolean verifyChecksum,
String clientName,
Peer peer,
DatanodeID datanodeID,
org.apache.hadoop.hdfs.PeerCache peerCache,
CachingStrategy cachingStrategy)
Create a new BlockReader specifically to satisfy a read.
|
Copyright © 2013 Apache Software Foundation. All rights reserved.