Matteo do you mean you have an admin port patch? Can you please share it?? What kind of operations can be performed on that port??
Thanks, JV On Tue, Mar 1, 2016 at 11:56 PM, Matteo Merli <[email protected]> wrote: > Sijie, > we have a similar tool in our internal branch, readledger to dump the > content of a (possibly still open) ledger. We'll submit for PR. > > Matteo > > On Tuesday, March 1, 2016 10:19 AM, Sijie Guo <[email protected]> > wrote: > > > Yup. it would be nice if you could abstract this into a shell command, > like > 'tail <ledger-id>', that would be useful. > > On Mon, Feb 29, 2016 at 11:31 AM, Enrico Olivelli <[email protected]> > wrote: > > > Hi Arun, > > IMHO if you just need to see the content of a ledger you can write a > simple > > client which opens a given ledger using no-recovery mode and dump the > > contents to disk to another file or just to stdout > > > > Enrico > > > > Il Lun 29 Feb 2016 19:34 Arun M. Krishnakumar <[email protected]> ha > > scritto: > > > > > Hi Sijie, > > > > > > Yes, that's correct. The work-item is about building an admin command > to > > > force the flush and I was looking for any option or workaround to do > the > > > job. > > > > > > As we understand it, there doesn't seem to be a nice way to communicate > > > with the bookies for such OOB (out of band) requests. So one of the > > options > > > is to have a separate communication channel from the shell to the > bookie. > > > This would enable other interesting commands such as querying the exact > > > states of various caches, getting some statistical numbers etc. > > > > > > Do you have any other requirements that would fall into this general > > > operational category ? If so, and if the approach isn't too bad, we > could > > > work on a clean channel and protocol that could be used for such > > > communications. > > > > > > Thanks, > > > Arun > > > > > > On Mon, Feb 29, 2016 at 9:45 AM, Sijie Guo <[email protected]> wrote: > > > > > > > We don't have the mechanism to trigger/force a flush by the command > > right > > > > now. > > > > > > > > Arun: > > > > > > > > As my understanding on your question, you want to admin command that > > you > > > > could issue to trigger the flush, right? > > > > > > > > - Sijie > > > > > > > > On Fri, Feb 26, 2016 at 10:33 PM, Venkateswara Rao Jujjuri < > > > > [email protected]> wrote: > > > > > > > > > Also do we have a way to flush to ledger on disk? Some of the > bookie > > > > shell > > > > > commands will fail if there is no disk entry for journals. > > > > > > > > > > Thanks, > > > > > JV > > > > > > > > > > On Sat, Feb 27, 2016 at 5:29 AM, Arun M. Krishnakumar < > > > > [email protected]> > > > > > wrote: > > > > > > > > > > > (Please ignore the first part of the question since that can be > > done > > > > by a > > > > > > shell command. I am interested in the second part.) > > > > > > > > > > > > Thanks, > > > > > > Arun > > > > > > > > > > > > On Fri, Feb 26, 2016 at 1:05 PM, Arun M. Krishnakumar < > > > > > [email protected]> > > > > > > wrote: > > > > > > > > > > > > > Hi Matteo, > > > > > > > > > > > > > > Thanks for the quick reply. > > > > > > > > > > > > > > The use case is mainly for testing and debugging during > > > development. > > > > > > > > > > > > > > Is there a way to check the entry in the journal device (say a > > > > running > > > > > > > count of pending entries yet to be written out to the entry > log) > > ? > > > > > > > Ideally I was thinking of querying the entry log itself. > > > > > > > > > > > > > > Thanks, > > > > > > > Arun > > > > > > > > > > > > > > > On Feb 26, 2016, at 12:34 PM, Matteo Merli < > [email protected]> > > > > > wrote: > > > > > > > > > > > > > > > > Hi Arun, > > > > > > > > > > > > > > > > what is your use case for waiting until the entries are > > "flushed" > > > > > into > > > > > > > the > > > > > > > > entry logs? > > > > > > > > > > > > > > > > Once the ledger.addEntry() operation completes, the entries > are > > > > > > > guaranteed > > > > > > > > to have been written and fsynced on the journal device, from > > > where > > > > > they > > > > > > > > will be recovered in case the bookie crashes before flushing > to > > > the > > > > > > entry > > > > > > > > log. > > > > > > > > > > > > > > > > Matteo > > > > > > > > > > > > > > > > On Fri, Feb 26, 2016 at 12:13 PM Arun M. Krishnakumar < > > > > > > > [email protected]> > > > > > > > > wrote: > > > > > > > > > > > > > > > >> Hi, > > > > > > > >> > > > > > > > >> (I am new to bookkeeper, so please forgive my ignorance if > > there > > > > is > > > > > > > >> something fundamental I'm missing). > > > > > > > >> > > > > > > > >> When working with bookkeeper and making entries we would > like > > to > > > > be > > > > > > > able to > > > > > > > >> see entries flushed to disk and then examine them using > > existing > > > > > shell > > > > > > > >> commands (for debugging and test purposes). > > > > > > > >> > > > > > > > >> We typically use the "localbookie" command-line option and > > need > > > to > > > > > > have > > > > > > > a > > > > > > > >> way to know if an entry written has made it correctly to > > > > bookkeeper > > > > > > and > > > > > > > the > > > > > > > >> disk. > > > > > > > >> > > > > > > > >> Currently the ways we are planning to do this are: > > > > > > > >> 1. To modify the configuration to set very low thresholds > for > > > > > > flushing. > > > > > > > >> 2. Create a listener thread on the localbookie which will > > listen > > > > to > > > > > > > flush > > > > > > > >> commands and forcibly do a flush. (I know this is a hack, > but > > > > just > > > > > > > putting > > > > > > > >> it out there) > > > > > > > >> > > > > > > > >> Is there a cleaner way to do this ? I think people may have > > > wanted > > > > > > some > > > > > > > >> similar functionality in the past. > > > > > > > >> > > > > > > > >> Thanks, > > > > > > > >> Arun > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > Jvrao > > > > > --- > > > > > First they ignore you, then they laugh at you, then they fight you, > > > then > > > > > you win. - Mahatma Gandhi > > > > > > > > > > > > > > -- > > > > > > -- Enrico Olivelli > > > > > > -- Jvrao --- First they ignore you, then they laugh at you, then they fight you, then you win. - Mahatma Gandhi
