Hi, Igniters.
Everyone is welcome to review several suggestions of reducing time of
node failure detection - part of IEP-45:
1.IGNITE-13017 : Hardcoded timeout in re-marking node as alive. It can
prolong detection of node failure.
Solution: The hardcode simply removed.
* 2.IGNITE-13012 : Confusing node ping algorithm, duplicated
connection checking. This hinders other improvements.
Solution: Node ping interval is now based on parameters instead of
constant. Removed duplicated ping.
* 3.IGNITE-13016 : Long detection of node failure.
Solutions: Using parameters instead of constants and hardcode. Fix of
backward connection checking.
