From what I understood, Hadoop is a distributed storage system thingy. However what I don\'t really get is, can we replace normal RDBMS(MySQL, Postgresql, Oracle) with Hadoop? O
Django can connect with most RDMS, so you can use it with a Hadoop based solution.
Keep in mind, Hadoop is many things, so specifically, you want something with low latency such as HBase, don't try to use it with Hive or Impala.
Python has a thrift based binding, happybase, that let you query Hbase.