[Bugs] [Bug 1403646] self-heal not happening, as self-heal info lists the same pending shards to be healed

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1403646



--- Comment #2 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: http://review.gluster.org/16105 committed in release-3.8 by Pranith
Kumar Karampuri (pkarampu at redhat.com) 
------
commit d1cb82ef4154c52c8c9b7a95c5016b97d9babf10
Author: Krutika Dhananjay <kdhananj at redhat.com>
Date:   Thu Dec 8 22:49:48 2016 +0530

    cluster/afr: Fix per-txn optimistic changelog initialisation

            Backport of: http://review.gluster.org/16075

    Incorrect initialisation of local->optimistic_change_log was leading
    to skipped pre-op and post-op even when a brick didn't participate in
    the txn because it was down.
    The result - missing granular name index resulting in some entries
    never getting healed.

    FIX:
    Initialise local->optimistic_change_log just before pre-op.

    Also fixed granular entry heal to create the granular name index in
    pre-op as opposed to post-op. This is to prevent loss of granular
    information when during an entry txn, the good (src) brick goes
    offline before the post-op is done. This would cause self-heal to
    do conservative merge (since dirty xattr is the only information
    available), which when granular-entry-heal is enabled, expects
    granular indices, the lack of which can lead to loss of data in
    the worst case.

    Change-Id: Ibc0fbfb3fa21c578e28868d9e30b274e33c12064
    BUG: 1403646
    Signed-off-by: Krutika Dhananjay <kdhananj at redhat.com>
    Reviewed-on: http://review.gluster.org/16105
    Reviewed-by: Pranith Kumar Karampuri <pkarampu at redhat.com>
    Smoke: Gluster Build System <jenkins at build.gluster.org>
    NetBSD-regression: NetBSD Build System <jenkins at build.gluster.org>
    CentOS-regression: Gluster Build System <jenkins at build.gluster.org>

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