Sandeep More created KNOX-1423:
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Summary: Document Zookeeper URL Manager behaviour for HA services
Key: KNOX-1423
URL: https://issues.apache.org/jira/browse/KNOX-1423
Project: Apache Knox
Issue Type: Bug
Reporter: Sandeep More
Assignee: Sandeep More
Fix For: 1.2.0
For services that use Zookeeper based HA there is no documentation about how
the failover scenario works.
The failover code is a simple round-robin. All URLs are tried once on failover.
When the list is exhausted the entire list of URLs is re-fetched from Zookeeper
and the new list is tried again the same way (if the configured number of
failover attempts has not been reached).
Upon failure, the url is marked failed and next is tried and used until it
fails.
This needs to be explicitly documented for clear understanding of HA workings.
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