All - I've created the following KIP to try and capture the motivation, usecases and vision for KnoxShellTable in the following KIP.
I may extend this rather than add a new KIP for the Custom Groovy Shell commands that I am working on for working with KnoxShellTable but in the meantime, this represents the core work for tabular data. Some details of the current implementation are still missing and may be added as we go. https://cwiki.apache.org/confluence/display/KNOX/KIP-14+-+KnoxShell+Improvements+for+Tabular+Data Any thoughts on this are more than welcome! thanks, --larry