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https://issues.apache.org/jira/browse/OOZIE-2494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16426163#comment-16426163
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Robert Kanter commented on OOZIE-2494:
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I'm fine with adding a way to tell Oozie to actually use a different timezone
if we can do that correctly (and I'm sure a lot of users would like this), but
it's also important to remain consistent so we don't break anything. So I'd
suggest that we fix the original issue here (i.e. the cron syntax not handling
DST as expected) and then we can file a "New Feature" Jira to add a way to use
other timezones.
> Cron syntax not handling DST properly
> -------------------------------------
>
> Key: OOZIE-2494
> URL: https://issues.apache.org/jira/browse/OOZIE-2494
> Project: Oozie
> Issue Type: Bug
> Components: coordinator
> Affects Versions: 4.2.0
> Reporter: Dennis Pallett
> Assignee: Julia Kinga Marton
> Priority: Blocker
> Attachments: CronExpressionPOC.java, OOZIE-2494-001.patch,
> OOZIE-2494-002.patch, OOZIE-2494-003.patch, OOZIE-2494-004.patch,
> testActionMaterWithDST3.patch
>
>
> When specifying a coordinator frequency, you can also specify a "timezone".
> While the frequency is always calculated in UTC, the timezone’s DST rules are
> still applied. We can see this in the following two Coordinators, which ran
> across the DST shift (March 13 2016 at 2am) for the America/Los_Angeles
> timezone. The "el-UTC" job has "UTC" as the timezone, while the "el-LA" job
> has “America/Los_Angeles” as the timezone. Both jobs have a frequency of
> {{$\{coord:days(1)\}}}.
> {noformat}
> Job Name : el-UTC
> Start Time : 2016-03-13 01:10 GMT | 2016-03-12 17:10 PST
> ---------------------------------------------------------
> ID Nominal Time (UTC) Nominal Time (LA)
> @1 2016-03-13 01:10 GMT 2016-03-12 17:10 PST
> @2 2016-03-14 01:10 GMT 2016-03-13 18:10 PDT
> {noformat}
> {noformat}
> Job Name : el-LA
> Start Time : 2016-03-13 01:10 GMT | 2016-03-12 17:10 PST
> ---------------------------------------------------------
> ID Nominal Time (UTC) Nominal Time (LA)
> @1 2016-03-13 01:10 GMT 2016-03-12 17:10 PST
> @2 2016-03-14 00:10 GMT 2016-03-13 17:10 PDT
> {noformat}
> As you can see, @2’s nominal time is adjusted to an hour earlier in the
> "el-LA" job, but not in the "el-UTC" job.
> However, when running a similar set of jobs, but using cron syntax [({{10 1
> 1/1 * *}}|http://crontab.guru/#10_1_1/1_*_*], which indicates 1:10 every day
> of every month), this isn’t the case:
> {noformat}
> Job Name : cron-UTC
> Start Time : 2016-03-13 01:08 GMT | 2016-03-12 17:08 PST
> ---------------------------------------------------------
> ID Nominal Time (UTC) Nominal Time (LA)
> @1 2016-03-13 01:10 GMT 2016-03-12 17:10 PST
> @2 2016-03-14 01:10 GMT 2016-03-13 18:10 PDT
> {noformat}
> {noformat}
> Job Name : cron-LA
> Start Time : 2016-03-13 01:08 GMT | 2016-03-12 17:08 PST
> ---------------------------------------------------------
> ID Nominal Time (UTC) Nominal Time (LA)
> @1 2016-03-13 01:10 GMT 2016-03-12 17:10 PST
> @2 2016-03-14 01:10 GMT 2016-03-13 18:10 PDT
> {noformat}
> As you can see, @2’s nominal time are the same in both the "cron-UTC" and
> "cron-LA" jobs. The "cron-LA" job should have the same nominal time as the
> "el-LA" job from earlier.
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