Java org.apache.hadoop.hdfs MiniDFSCluster fields, constructors, methods, implement or subclass

Example usage for Java org.apache.hadoop.hdfs MiniDFSCluster fields, constructors, methods, implement or subclass

Introduction

In this page you can find the methods, fields and constructors for org.apache.hadoop.hdfs MiniDFSCluster.

The text is from its open source code.

Field

String	PROP_TEST_BUILD_DATA System property to set the data dir:
String	HDFS_MINIDFS_BASEDIR Configuration option to set the data dir:

Constructor

	MiniDFSCluster(Configuration conf, int numDataNodes, boolean format, String[] racks) Modify the config and start up the servers.
	MiniDFSCluster(int nameNodePort, Configuration conf, int numDataNodes, boolean format, boolean manageDfsDirs, StartupOption operation, String[] racks) NOTE: if possible, the other constructors that don't have nameNode port parameter should be used as they will ensure that the servers use free ports.
	MiniDFSCluster(Configuration conf, int numDataNodes, boolean format, String[] racks, String[] hosts) Modify the config and start up the servers.
	MiniDFSCluster(int nameNodePort, Configuration conf, int numDataNodes, boolean format, boolean manageNameDfsDirs, boolean manageDataDfsDirs, StartupOption operation, String[] racks, String hosts[], long[] simulatedCapacities) NOTE: if possible, the other constructors that don't have nameNode port parameter should be used as they will ensure that the servers use free ports.

Method

Configuration	getConfiguration(int nnIndex)
DistributedFileSystem	getFileSystem() Get a client handle to the DFS cluster with a single namenode.
NameNode	getNameNode() Gets the started NameNode.
int	getNameNodePort() Gets the rpc port used by the NameNode, because the caller supplied port is not necessarily the actual port used.
URI	getURI()
void	setLeasePeriod(long soft, long hard) Set the softLimit and hardLimit of client lease periods
void	shutdown() Shutdown all the nodes in the cluster.
void	shutdown(boolean deleteDfsDir) Shutdown all the nodes in the cluster.
void	shutdownCluster(MiniDFSCluster cluster) Shut down a cluster if it is not null
void	startDataNodes(Configuration conf, int numDataNodes, boolean manageDfsDirs, StartupOption operation, String[] racks) Modify the config and start up the DataNodes.
DataNodeProperties	stopDataNode(int i)
DataNodeProperties	stopDataNode(String dnName)
void	waitActive() Wait until the cluster is active and running.
void	waitClusterUp() wait for the cluster to get out of safemode.