Hello, Just finished reading the Hive-Architecture pdf, and failed to find the answers I was hoping for. So here I am, hoping this community will shed some light.
I think I know what the answers will be, I need that bolted down and secured. We are concerned on how data is transferred between data-nodes and hive, especially when it comes to clusters were there's no SSL between nodes. And this is the user-case: 1. Table employee is a Hive table, with SerDe 2. MapReduce job accesses the table Employees which holds Encrypted data 3. SerDe decrypts the data 4. Post-SerDe output is returned to the MapReduce job and saved to a new Hive table using a new Encryption implementation The flow, as I think it currently is should be: MapReduce Job -- > Read table metadata -- > SerDe creates map-reduce job -- > distributes across nodes Which means that data is decrypted on the local nodes and then sent in clear-text back to the original map-reduce job to be saved in a new table. Is that correct? :(
