hdfsConnectAsUser()
Supported by libMapRClient for hadoop-2.x
Connects to a file system cluster as specified user.
If a connection to the cluster in which the remote host is located already exists, the functions return a handle to this existing connection.
If a connection to the cluster does not already exist, the functions return a unique handle to a connection instance for each user.
default is used for the host parameter, this means connect to the
first cluster listed in the MAPR_HOME/conf/mapr-clusters.conf file
on the client.For more information about connections, see Establishing Connections to file system.
Signature
hdfsFS hdfsConnectAsUser(const char* host, tPort port, const char* user)Parameters
| Parameter | Description |
|---|---|
host |
A string containing either a hostname or an IP address of a CLDB node of a file system cluster.
To connect to the first file system cluster that is specified in MAPR_HOME/conf/mapr-clusters.conf on the client, pass the value default and use the port number 0. This parameter does not accept NULL as a value. |
port |
The port on which the host is listening. |
user |
The user connected to the cluster. |
Return Value
Returns a handle to the connected file system, or NULL on error.