[Bugs] [Bug 1512691] PostgreSQL DB Restore: unexpected data beyond EOF

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1512691

Worker Ant <bugzilla-bot at gluster.org> changed:

           What    |Removed                     |Added
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             Status|POST                        |MODIFIED



--- Comment #34 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/20413 committed in master by "Raghavendra G"
<rgowdapp at redhat.com> with a commit message- performance/write-behind: better
invalidation in readdirp

Current invalidation of stats in wb_readdirp_cbk is prone to races. As
the deleted comment explains,

<snip>
We cannot guarantee integrity of entry->d_stat as there are cached
writes. The stat is most likely stale as it doesn't account the cached
writes. However, checking for non-empty liability list here is not a
fool-proof solution as there can be races like,
  1. readdirp is successful on posix
  2. sync of cached write is successful on posix
  3. write-behind received sync response and removed the request from
     liability queue
  4. readdirp response is processed at write-behind.

In the above scenario, stat for the file is sent back in readdirp
response but it is stale.
</snip>

Change-Id: I6ce170985cc6ce3df2382ec038dd5415beefded5
Signed-off-by: Raghavendra G <rgowdapp at redhat.com>
Updates: bz#1512691

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