[SPARK-4342] [Core]connection ack timeout improvement, replace Timer with ScheudledExecutor...#3207

Closed

haitaoyao wants to merge 2 commits intoapache:masterfrom

haitaoyao:connection-monitor-improve

Commits on Nov 11, 2014

connection ack timeout improvement, replace Timer with ScheudledExecutor to avoid long timeout cause reference message body to OOME
haitaoyao
committed
rm unused code
haitaoyao
committed