HADOOP-11333. Fix deadlock in DomainSocketWatcher when the notification pipe is full (zhaoyunjiong via cmccabe) Moved to 2.6.1
HADOOP-11333. Fix deadlock in DomainSocketWatcher when the notification pipe is full (zhaoyunjiong via cmccabe)
Moved to 2.6.1

(cherry picked from commit 05ed69058f22ebeccc58faf0be491c269e950526)

Conflicts:
	hadoop-common-project/hadoop-common/CHANGES.txt

(cherry picked from commit 796b94df1ea0269617417bb7889ed4035ed0f5a2)

myeoje/PhillyYarn,mix/hadoop,mix/hadoop,myeoje/PhillyYarn,mix/hadoop,myeoje/PhillyYarn,myeoje/PhillyYarn,myeoje/PhillyYarn,mix/hadoop,mix/hadoop,mix/hadoop,mix/hadoop,myeoje/PhillyYarn,myeoje/PhillyYarn,mix/hadoop,myeoje/PhillyYarn