Copying Data from Apache Hadoop to a MapR Cluster

Describes the procedure to copy data from an Apache Hadoop to a MapR cluster.

You can use the hdfs protocol, webhdfs protocol, or NFS to copy data from Apache Hadoop to a MapR cluster.

The following table describes these methods:

Method Description
hdfs:// protocol You can use the hadoop distcp command with the hdfs:// protocol to copy data from a HDFS cluster into a MapR cluster if the HDFS cluster and the MapR cluster use the same RPC protocol version. For all other scenarios, use the webhdfs:// protocol or NFS gateway to copy data to a MapR cluster.
webhdfs:// protocol You can use the hadoop distcp command with the webhdfs:// protocol to copy data from a HDFS cluster into a MapR cluster.
NFS You can mount a MapR cluster to a HDFS cluster via NFS mount and then use the hadoop distcp command to copy data between the two clusters.

Refer to the following sections for information about how to copy data from Hadoop to a MapR cluster: