Thanks Sam, Anthony! It's a bit scary (even though the probability is low) to know that there could be data loss in Swift.
On Wed, Aug 26, 2015 at 3:30 PM, Chow, Anthony T (Anthony)** CTR ** <anthony.c...@alcatel-lucent.com> wrote: > Shri, > > Will these 2 discussions help resolve your doubt? > > https://answers.launchpad.net/swift/+question/156307 > > http://stackoverflow.com/questions/28379809/how-are-hash-collisions-handled > > > Anthony. > > -----Original Message----- > From: Shrinand Javadekar [mailto:shrin...@maginatics.com] > Sent: Wednesday, August 26, 2015 1:37 PM > To: openstack@lists.openstack.org > Subject: [Openstack] [Swift] Delete handling with md5 collisions > > Hi, > > I have a question about how object deletes are handled with md5 collisions. I > looked at the code and here's my understanding of how things will work. > > If I have two objects that have the same md5 hash, they will go to the same > hash directory. Say, they go to /srv/node/r1/object/1024/eef/deadbeef/t1.data > and /srv/node/r1/object/1024/eef/deadbeef/t2.data. > > Now, if I delete object t1, Swift will created a new file called t3.ts and > put it in the hash directory. > /srv/node/r1/object/1024/eef/deadbeef/t3.ts. > > When the replicator runs, it will delete all files with timestamp less than > t3. So will it delete both t1 and t2? > > Thanks in advance. > -Shri > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
