Sure. But you could have chosen _any_ datastore to cache your results in, right? Redis doesn't integrate with Hadoop in any special way. Some datastores do. For

Sure. But you could have chosen _any_ datastore to cache your results in, right? Redis doesn't integrate with Hadoop in any special way. Some datastores do. For example, it does make sense to say Cassandra is a part of the Hadoop ecosystem, due to the features in https://wiki.apache.org/cassandra/HadoopSupport https://wiki.apache.org/cassandra/HadoopSupport