Hadoop Protocol Versions for MapR Software

Each MapR Cluster version is associated with a Hadoop RPC protocol version. The JobTrackers or ResourceManagers in a given cluster only accept the jobs submitted from clients with a compatible protocol version.

The following table includes the Hadoop RPC protocol version and compatible MapR client versions for each MapR Release:
Table 1.
MapR Cluster Version RPC Protocol Compatible with MapR Client Version
5.2.0 9* 5.2.0, 5.1.0, 5.0.0, 4.1.0, 4.0.2, 4.0.1**
5.1.0 9* 5.1.0, 5.0.0, 4.1.0, 4.0.2, 4.0.1**
5.0.0 9* 5.0.0, 4.1.0, 4.0.2, 4.0.1**
4.1.0 9* 4.1, 4.0.2, 4.0.1**
4.0.x 9* 4.0.x***
3.1.x 4 3.1.x
3.0.x 5 3.0.x, 2.1.x
2.1.x 5 3.0.x, 2.1.x
2.0.x 4 3.1.x, 2.0.x
  • * MapReduce v1 and v2 use the same protocol version.
  • ** A 4.0.2 client can submit MapReduce v2 jobs to a 4.1, 5.0, or 5.1 cluster configured with zero-configuration ResourceManager failover (RM HA) as long as the client is also configured with zero-configuration RM HA.
  • *** If you want to submit MapReduce v2 jobs to a 4.0.x cluster configured with zero-configuration RM HA, you must use a 4.0.2 client on a 4.0.2 cluster.