Robert Kanter created OOZIE-2130:
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Summary: Add EL Function for offsetting a date by a timezone
amount including DST
Key: OOZIE-2130
URL: https://issues.apache.org/jira/browse/OOZIE-2130
Project: Oozie
Issue Type: New Feature
Affects Versions: trunk
Reporter: Robert Kanter
Assignee: Robert Kanter
If a Coordinator has a data dependency, you can use the {{tzOffset}} EL
Function to get the offset from the dataset timezone to the coordinator
timezone (including DST), so that you can pass to your workflow a time in your
timezone. We also have a generic {{dateOffset}} EL Function that lets you
offset a date by a specific amount. For users not using a data dependency who
want to take into account a timezone offset (including DST), they cannot use
the {{tzOffset}} function, and the {{dateOffset}} function is not enough.
We should add a {{dateTzOffset}} function that takes an arbitrary date and a
timezone that will offset the given date by the given timezone relative to the
Oozie processing timezone, including DST.
In other words, it's like the {{dateOffset}} function, but instead of giving it
a fixed offset, you gave it the difference between the Oozie processing
timezone and the given timezone, at the time of the given date.
For example:
{noformat}
${coord:dateTzOffset("2012-06-13T00:00Z", "America/Los_Angeles")}
{noformat}
would evaluate to "2012-06-12T17:00Z" (-0700 in Summer)
and
{noformat}
${coord:dateTzOffset("2012-12-13T00:00Z", "America/Los_Angeles")}
{noformat}
would evaluate to "2012-12-12T16:00Z" (-0800 in Winter)
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