[TAJO-1412] Add polling API in TajoMasterClientProtocol to wait result effectively

• Type: Improvement
• Status: Open
• Priority: Trivial
• Resolution: Unresolved
• Component/s: Java Client
• Assignee: Navis Ryu
• Reporter: Navis Ryu
• Created: 18/Mar/15 08:34
• Updated: 02/Nov/15 17:56

Description

Currently, client polls master node to acquire result frequently (every 500 msec), which seemed not small enough for light queries and not big enough for heavy queries.