[TAJO-1221] HA TajoClient should not connect TajoMaster at the first.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.0
• Component/s: TajoMaster
• Labels: failure-handling fault-tolerance high-availability
• Assignee: JaeHwa Jung
• Reporter: Hyunsik Choi
• Created: 02/Dec/14 09:46
• Updated: 18/Dec/14 03:01
• Resolved: 18/Dec/14 02:46

Description

Problem

We TajoClient is opened, TajoClient initially tries to connect TajoMaster. This manner does not guarantee high availability. A known TajoMaster host may be not work anymore. So, this manner still has some failure point.

Also, this manner prohibits a Tajo cluster to run on some dynamic cluster environments like Yarn.

Solution

Tajo HA client should get directly TajoMaster addresses and others from HA component without contacting TajoMaster.