Thanks Jordan... can you elaborate more on your answer On Feb 22, 2016 7:43 PM, "Jordan Zimmerman" <[email protected]> wrote:
> Be careful when restoring that you don’t go “back in time”. ZooKeeper can > be used as a datastore (bad idea) and a coordinator. If the transactions > files you are restoring contain paths that are involved in leader > elections, etc. insanity can ensue. > > > On Feb 22, 2016, at 9:05 AM, vikrant singh <[email protected]> > wrote: > > > > I think you need not to worry about the leader election and who was the > > previous leader. Quorum should be able to handle it when it comes up. > > Neither you need to validate who becomes new leader. > > > > Before you delete any files, please make sure you keep the back up so if > > your experiment fails you do not end up with no files to try again. > > > > That said.. once all dat is backed up I would go and delete all the > > snapshot.* and log.* except latest one. In your case I will leave > > snapshot.d0002bf88 > > in the data folder. Please note the number at the end of file.. it is the > > transaction number after which this snap shout was created. On each of > your > > ZK server you will have a file for which this number will be in the same > > range. Keep those file on the server. > > > > I do not think you need to initialize any data manually.. once snapshot > > files are there in place you can start the server and most likely it > will > > come up. > > > > All the best. > > > > > > > > > > > > On Mon, Feb 22, 2016 at 7:08 AM, AALISHE <[email protected]> wrote: > > > >> Hi Vikrant/All, > >> > >> I have some thought about the steps to share: > >> > >> > >> 1- Since this is a 3 node cluster .... I must Identify which one is > the > >> (leader ZK node) > >> 2- Stop ZK from cloudera manager > >> 3- Go to snapshot folder (on the leader) and take a backup a side > >> 4- delete the files (snapshot + log) with the newest date stamp? (on > all 3 > >> nodes) > >> 5- Start ZK and make sure the previous leader is the current leader ? > or > >> maybe I should initialize ZK data ? > >> > >> > >> > >> Can anyone take a look please and confirm/correct the above steps. > >> > >> > >> cheers! > >> > >> On Mon, Feb 22, 2016 at 4:31 PM, vikrant singh < > [email protected]> > >> wrote: > >> > >>> I have not tried it, but as I understand following should be the steps > to > >>> follow. > >>> Step1 - back up these snapshot files > >>> Step2 - choose the snapshot files from which you want to recover. > >>> Step3 - remove all other files from data dir > >>> Step4 - Start server > >>> > >>> On Mon, Feb 22, 2016 at 2:04 AM, AALISHE <[email protected]> wrote: > >>> > >>>> Anything anyone please? > >>>> On Feb 21, 2016 5:51 PM, "AALISHE" <[email protected]> wrote: > >>>> > >>>>> > >>>>>> thanks Ted, > >>>>> > >>>>> > >>>>> > >>>>> this is the link http://pastebin.com/CgGi45EN > >>>>> > >>>>> > >>>>> cheers! > >>>>> > >>>> > >>> > >> > >
