java - Amazon EC2 - Quartz and Job not running at correct time -


i have java app deployed on amazon ec2 server. use quartz scheduling various jobs.

i tried scheduling job run @ 9am - noticed didnt execute until 10am tried execute job @ 9am gmt-5 -should of executed @ 2pm gmt executed @ 3pm gmt

on further analysis noticed time on amazon server set in utc , hour behind gmt currently

i wondering - part of setup not correct since jobs not executing @ correct time?

do need specify when setting cron trigger? setting cron in quartz follows using cronschedulebuilder

    cronexpression cronexpression = new cronexpression(cronvalue);     timezone timezone = timezone.gettimezone("etc/gmt-5");      cronexpression.settimezone(timezone);       trigger trigger = triggerbuilder.newtrigger().withidentity(triggername).startnow()                 .withschedule(cronschedulebuilder.cronschedule(cronexpression)).build();          jobdetail job = jobbuilder.newjob(mycloudtasksservertaskexecutor.class).withidentity(taskid.tostring())                 .storedurably(true).build();

any appreciated

as wrote ec2 server running utc. gmt changed @ last sunday of march standard time daylight saving time.

i suggest time jobs in utc. start time of job different in summer , winter. have decide if ok you.

else have create 2 timers, 1 running march october , other october march differ in 1 hour.

it logical ec2 instances run utc because shift across time zones easier achieve.


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