Alright, I've just found out the answer.
"Oozie always runs everything in "oozie.processing.timezone", which defaults
to UTC. The "timezone" in the coordinator is a little misleading as it
doesn't actually change the timezone; only the daylight savings time rules
from this timezone are used.
We typically recommend users to leave the "oozie.processing.timezone" at
UTC and to do the math for setting the times in your coordinator (like
Mohammad said).
- Robert"
"you may set this property in your oozie-site.xml"
<property>
<name>oozie.processing.timezone</name>
<value>GMT+0400</value>
</property>
reference:
http://qnalist.com/questions/4572075/howto-make-oozie-respect-timezone[
^]
http://stackoverflow.com/questions/13968768/oozie-timezone-settings[
^]