Robert Kanter created OOZIE-1916:
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Summary: Use Curator leader latch instead of checking the order of
Oozie servers
Key: OOZIE-1916
URL: https://issues.apache.org/jira/browse/OOZIE-1916
Project: Oozie
Issue Type: Improvement
Components: HA
Affects Versions: trunk
Reporter: Robert Kanter
Priority: Minor
We currently have a few tasks (e.g. Purging old jobs) that we only want to do
in one Oozie server. We currently simply check which Oozie server is first in
ZooKeeper's list of servers (i.e. the order they connected). We haven't seen
any problems with this, but it might be a good idea to replace this with
Curator's leader-latch, which sounds more robust.
Once this is done, we also no longer need the internal leader-latch used by the
ChildReaper in OOZIE-1906.
http://curator.apache.org/curator-recipes/leader-latch.html
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