Ok, got it. -Vlad
On Wed, Jul 20, 2016 at 12:15 PM, Enis Söztutar <e...@apache.org> wrote: > We keep the WALs which can accumulate a lot if the use case is to only do > backups infrequently. This will definitely cause issues since HDFS space > will get filled up. That is why we may need an option for having > incremental backups not used, and WAL references being deleted. > > Enis > > On Tue, Jul 19, 2016 at 6:33 PM, Vladimir Rodionov <vladrodio...@gmail.com > > > wrote: > > > Why anyone will ever need disabling incremental backups? If you do not > need > > it - just run only full backups. > > > > -Vlad > > > > On Tue, Jul 19, 2016 at 6:21 PM, Enis Söztutar <e...@apache.org> wrote: > > > > > Thanks Matteo for chiming in. > > > > > > On Tue, Jul 19, 2016 at 5:02 PM, Matteo Bertozzi < > > theo.berto...@gmail.com> > > > wrote: > > > > > > > I did some review in the early beginning, but then lost track of the > > > > changes. > > > > but I'd like to give a quick review to the full code once people here > > are > > > > ok with getting this feature in master (2.0). > > > > (let say we put a deadline for reviews, like 1 week for reviewing the > > > full > > > > stuff after everyone agrees to get this in. just to avoid holding > this > > > for > > > > too long, but still enough time to have people that are interested to > > > look > > > > at it. with did the same thing for MOB with a mega patch > > > > https://reviews.apache.org/r/36391/) > > > > > > > > > > This sounds good. Vladimir / Ted how do you guys want to handle the > > merge? > > > As a giant patch or a rebase of code in the branch and through git > merge. > > > > > > We need to run a vote when the to-be-merged branched is ready. We can > > set a > > > vote timeout for at least 1 week. > > > > > > > > > > > > > > most of the code seemed isolated from the beginning, few changes here > > and > > > > there in the core. > > > > so, this side of things seems ok to me. > > > > > > > > maybe some work to add IT tests as mentioned above, but that should > not > > > > take long. > > > > > > > > I don't know if there are already docs, but that is another thing we > > may > > > > want to get in with the merge. > > > > a minimal coverage at least on how to use the feature, and maybe > > calling > > > it > > > > out as experimental? > > > > > > > > my main concern were around incremental backups. > > > > I'm still not convinced around the fact that because the WALs contain > > > > regions of multiple tables > > > > the incremental backup will keep around WALs with some data that we > > don't > > > > really want in the backup (for space or maybe security reason). > > > > > > > > then there was the question about for how long should I take > > > incrementals, > > > > before deciding that a fresh full backup is less costly in terms of > > > space. > > > > but I think this incremental merge/compaction was a feature on the > > > roadmap > > > > as Phase3. > > > > which I think is ok to get later on, > > > > maybe just call out a lifecycle example on the docs under "best > > > practices". > > > > > > > > > > I think this will depend on the use case, and other factors like > > bandwidth > > > available, how much data > > > the user is willing to lose in case of catastrophic failure and how > > > "expensive" is full backup versus > > > incremental one. > > > > > > The full backup should also be useable by default, so maybe we can make > > an > > > option to not even keep WAL files, and completely disable incremental > > > backups? > > > > > > Enis > > > > > > > > > > > > > > has anyone interested in using backups looked at the doc in > HBASE-7912? > > > > is the current design of incremental backup acceptable for everyone > > > wanting > > > > to use this feature? > > > > (maybe this should be a question for the @user list and not dev) > > > > > > > > is there anyone already using this feature or it is just dev testing > > it? > > > > to me will be interesting having a use-case/workflow example, > > > > to see if in the real world my concerns about incremental are not > > showing > > > > up. > > > > > > > > On Tue, Jul 19, 2016 at 1:35 PM, Ted Yu <yuzhih...@gmail.com> wrote: > > > > > > > > > Gentle ping on this subject. > > > > > > > > > > The changes are mostly non-intrusive. > > > > > > > > > > More comments are welcome. > > > > > > > > > > On Mon, Jul 11, 2016 at 9:29 PM, Vladimir Rodionov < > > > > vladrodio...@gmail.com > > > > > > > > > > > wrote: > > > > > > > > > > > Not that hard, Andrew. I will open JIRA. > > > > > > > > > > > > -Vlad > > > > > > > > > > > > On Mon, Jul 11, 2016 at 8:46 PM, Andrew Purtell < > > > > > andrew.purt...@gmail.com> > > > > > > wrote: > > > > > > > > > > > > > How hard would it be to convert what you've been using to test > > end > > > to > > > > > end > > > > > > > during dev into an IT? > > > > > > > > > > > > > > > > > > > > > On Jul 11, 2016, at 5:31 PM, Vladimir Rodionov < > > > > vladrodio...@gmail.com > > > > > > > > > > > > > wrote: > > > > > > > > > > > > > > >>> Is there an integration test in hbase-it yet? If not, any > > tips > > > > on a > > > > > > > >>> semi-automateable way to take backups and restore them? > > > > > > > > > > > > > > > > We do not have yet, but we have a lot of unit tests. We > > provide 2 > > > > API > > > > > > for > > > > > > > > backup: > > > > > > > > > > > > > > > > 1. Admin.getBackupAdmin > > > > > > > > > > > > > > > > 2. Command - line via hbase command. > > > > > > > > > > > > > > > > Everything is straightforward. > > > > > > > > > > > > > > > > -Vlad > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >> On Mon, Jul 11, 2016 at 5:23 PM, Dima Spivak < > > > > dspi...@cloudera.com> > > > > > > > wrote: > > > > > > > >> > > > > > > > >> Is there an integration test in hbase-it yet? If not, any > tips > > > on > > > > a > > > > > > > >> semi-automateable way to take backups and restore them? > > > > > > > >> > > > > > > > >> -Dima > > > > > > > >> > > > > > > > >> On Mon, Jul 11, 2016 at 6:42 PM, Vladimir Rodionov < > > > > > > > vladrodio...@gmail.com > > > > > > > >> wrote: > > > > > > > >> > > > > > > > >>> Sorry, wrong links: > > > > > > > >>> These are the phases: > > > > > > > >>> > > > > > > > >>> Phase 1: > > > > > > > >>> https://issues.apache.org/jira/browse/HBASE- > > > > > > > >>> <https://issues.apache.org/jira/browse/HBASE-14030>14030 > > > > > > > >>> Phase 2: > > > > > > > >>> https://issues.apache.org/jira/browse/HBASE- > > > > > > > >>> <https://issues.apache.org/jira/browse/HBASE-14123>14123 > > > > > > > >>> Phase 3: > > > > > > > >>> https://issues.apache.org/jira/browse/HBASE- > > > > > > > >>> <https://issues.apache.org/jira/browse/HBASE-14414>14414 > > > > > > > >>> > > > > > > > >>> -Vlad > > > > > > > >>> > > > > > > > >>> On Mon, Jul 11, 2016 at 4:41 PM, Vladimir Rodionov < > > > > > > > >> vladrodio...@gmail.com > > > > > > > >>> wrote: > > > > > > > >>> > > > > > > > >>>> These are the phases: > > > > > > > >>>> > > > > > > > >>>> Phase 1: > > > > > > > >>>> https://issues.apache.org/jira/browse/HBASE- > > > > > > > >>>> <https://issues.apache.org/jira/browse/HBASE-7912>14030 > > > > > > > >>>> Phase 2: > > > > > > > >>>> https://issues.apache.org/jira/browse/HBASE- > > > > > > > >>>> <https://issues.apache.org/jira/browse/HBASE-7912>14123 > > > > > > > >>>> Phase 3: > > > > > > > >>>> https://issues.apache.org/jira/browse/HBASE- > > > > > > > >>>> <https://issues.apache.org/jira/browse/HBASE-7912>14414 > > > > > > > >>>> > > > > > > > >>>> -Vlad > > > > > > > >>>> > > > > > > > >>>> > > > > > > > >>>> On Mon, Jul 11, 2016 at 12:21 PM, Enis Söztutar < > > > > e...@apache.org> > > > > > > > >> wrote: > > > > > > > >>>> > > > > > > > >>>>> As you guys may already be familiar, Vladimir, Ted, Jerry > > and > > > > > > others > > > > > > > >>> have > > > > > > > >>>>> been developing the backup / restore functionality in a > > > series > > > > of > > > > > > > >> issues > > > > > > > >>>>> committed in the separate branch HBASE-7912[1]. > > > > > > > >>>>> > > > > > > > >>>>> Backup / Restore functionality is tracked as a 4-phase > > > project, > > > > > and > > > > > > > >> the > > > > > > > >>>>> first two phases are complete and useable. We are now > > working > > > > on > > > > > > > >> Phase 3 > > > > > > > >>>>> items, which are mostly improvements. We think that the > > > current > > > > > > code > > > > > > > >> in > > > > > > > >>>>> the > > > > > > > >>>>> branch containing all Phase 1 and Phase 2 items, and some > > > > Phase 3 > > > > > > > >> items > > > > > > > >>> is > > > > > > > >>>>> useable on it's own, and we do not have to wait for all > the > > > > > > > subtickets > > > > > > > >>> to > > > > > > > >>>>> be finished to make it completely useable (as follow up > > > tickets > > > > > are > > > > > > > >>> mostly > > > > > > > >>>>> improvements or optimizations). The improvements in the > > works > > > > are > > > > > > all > > > > > > > >>>>> backwards compatible with the existing stuff. Thus, we > > would > > > > like > > > > > > to > > > > > > > >>>>> propose that the branch HBASE-7912 be merged into master. > > > The > > > > > > parent > > > > > > > >>> jira > > > > > > > >>>>> has a design doc that goes into details about the > > > > implementation > > > > > > and > > > > > > > >>>>> design > > > > > > > >>>>> choices in case you are interested[2]. > > > > > > > >>>>> > > > > > > > >>>>> Most of the changes are largely non-intrusive and > confined > > to > > > > the > > > > > > > >>>>> backup subsystem. > > > > > > > >>>>> The unit tests have been passing on manual runs and we > > > > > > (hortonworks) > > > > > > > >>> have > > > > > > > >>>>> been running the integration tests as well as some other > > > > > > shell-based > > > > > > > >>>>> system > > > > > > > >>>>> tests on a forked version of the code. Most of the work > has > > > > been > > > > > > > >>> reviewed > > > > > > > >>>>> by 1, 2 or 3 committers already (mostly Ted, myself and > > > Jerry). > > > > > > > >>>>> > > > > > > > >>>>> What do you guys think? Is it time to call a vote? Any > > > concerns > > > > > or > > > > > > > >>>>> feedback > > > > > > > >>>>> appreciated. > > > > > > > >>>>> > > > > > > > >>>>> [1] https://issues.apache.org/jira/browse/HBASE-7912 > > > > > > > >>>>> [2] > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > https://issues.apache.org/jira/secure/attachment/12816339/HBaseBackupAndRestore%20-0.91.pdf > > > > > > > >>>>> > > > > > > > >>>>> Enis > > > > > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > >
