Comment 3 for bug 1214973

Reviewed: https://review.openstack.org/75165
Committed: https://git.openstack.org/cgit/openstack/marconi/commit/?id=c13fb6f93eba49f88d88820d0c06b3d4be89d558
Submitter: Jenkins
Branch: master

commit c13fb6f93eba49f88d88820d0c06b3d4be89d558
Author: kgriffs <email address hidden>
Date: Thu Jan 30 11:09:31 2014 -0600

    fix(MongoDB): Driver does not retry on AutoReconnect errors

    When a primary MongoDB node fails over to a secondary, pymongo raises an
    AutoReconnect error. Let's catch that and retry the operation so that
    we truly are Highly Available (in the sense that the user will never notice
    the few ms of "downtime" caused by a failover).

    This is particularly important when hosting backend with a DBaaS that
    routinely fails over the master as a way of compacting shards.

    NOTE: In order to get all MongoDB tests green, a tiny unrelated bug in
    test_shards was fixed as part of this patch.

    Closes-Bug: 1214973
    Change-Id: Ibf172e30ec6e7fa0bbb8fdcebda9e985d1e49714