[HIVEMALL-223] Add `-kv_map` and `-vk_map` option to to_ordered_list UDAF

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.5.2
• Assignee: Makoto Yui
• Reporter: Makoto Yui
• Created: 08/Nov/18 16:30
• Updated: 13/Nov/18 09:19
• Resolved: 13/Nov/18 09:19

Description

to_ordered_list UDAF to_ordered_list(value, key, '-k 100') or to_ordered_list(key, '-k 100') and returns List<key> using top-k values.

Sometime users want to get Map<key, score> or Map<score, key> for it's return.

So, this PR support `-kv_map` option that returns Map<K, V> and `-vk_map` option that returns Map<V,K> for the given to_ordered_list(value, key, '-k 100').

Issue Links

• links to: GitHub Pull Request #170