Adnan,   Under the HDFS service, you will need to update both the datanode group configuration and the gateway group configuration with this value. Then, make sure that you deploy the client configuration to every host that is running an Accumulo Tablet Server.   We are currently working on a way to make this process more intuitive!   Mike ... View more

Chris,   You will need to create a class that implements SortedKeyValueIterator and deploy it to your cluster. You may also want to consider extending one of the existing iterators in org.apache.accumulo.core.iterators.user if your use case is similar to something that has already been done, or for examples.   Mike ... View more