Supported by libMapRClient for hadoop-0.20.2

Connects to a MapR-FS cluster.

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 handle to a new connection instance.

Note that if 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 MapR-FS.


hdfsFS hdfsConnect(const char* host, tPort port)



A string containing either a hostname or an IP address of a CLDB node of a MapR-FS cluster.

To connect to the first MapR-FS 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.


The port on which the host is listening.

Return Value

Returns a handle to the connected filesystem, or -1 on error.

Check errno for error codes and meanings.