Comment 9 for bug 1624176

Reviewed: https://review.openstack.org/371771
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=116462d8a5a45ec876403234cf83b96dfad58ddd
Submitter: Jenkins
Branch: master

commit 116462d8a5a45ec876403234cf83b96dfad58ddd
Author: Clay Gerrard <email address hidden>
Date: Fri Sep 16 11:58:46 2016 -0700

    Add probetest for response with duplicate frags

    When an SSYNC connection fails after shipping a fragment, but before
    cleaning itself up - it can lead to multiple replicas of the same
    fragment index serviceable in the node_iter at the same time. Or
    perhaps more likely if a partner nodes win a race to rebuild waiting
    on a handoff. In this case, the proxy need not fail to service a GET
    just because of extra information. A similar guard was added to the
    reconstructor in a related change [1].

    This underlying bug is acctually fixed by the related change [2], this
    probetest is just encoding the failure to help with future maintenance.

    1. Related-Change: I91f3d4af52cbc66c9f7ce00726f247b5462e66f9
    2. Related-Change: I2310981fd1c4622ff5d1a739cbcc59637ffe3fc3

    Closes-Bug: 1624176

    Change-Id: I06fc381a25613585dd18916d50e7ca2c68d406b6