On Thu, Jun 8, 2017 at 5:47 PM, John D. Ament <johndam...@apache.org> wrote:
> On Thu, Jun 8, 2017 at 8:44 PM Sijie Guo <guosi...@gmail.com> wrote: > > > Sure. > > > > The discussion email thread between BookKeeper PMC and DistributedLog > PPMC: > > > > https://mail-search.apache.org/pmc/private-arch/ > bookkeeper-private/201706.mbox/%3CCAO2yDyZu+R1EaePyHZuFxe_W0qAkHNYxNnmn5+ > zx6q520uz...@mail.gmail.com%3E > > > > The BookKeeper PMC VOTE email thread (it is still ongoing): > > > > https://mail-search.apache.org/pmc/private-arch/ > bookkeeper-private/201706.mbox/%3CCAO2yDyacdXuXh==iw1OqrRiuGoxHprP_ > htnofojot5rxmv6...@mail.gmail.com%3E > > > > As our mentor suggested, I am following the process here : > > http://incubator.apache.org/guides/graduation.html#subproject > > This is the community vote for the first step. Let me know if I missed > > anything. > > > > You mean this is the vote on the PPMC? If so please drop general@. > Yeah, it is the vote on the PPMC. The document is saying to copy the vote to incubator general list when the VOTE is proposed. I will drop general@ then. - Sijie > > > > > > - Sijie > > > > > > > > On Thu, Jun 8, 2017 at 5:37 PM, John D. Ament <johndam...@apache.org> > > wrote: > > > > > Sije, > > > > > > Can you provide links to the PPMC and PMC votes going on for this move? > > > > > > John > > > > > > On Thu, Jun 8, 2017 at 8:21 PM Sijie Guo <guosi...@gmail.com> wrote: > > > > > > > ( /cc bookkeeper dev@ and incubator general@ for awareness ) > > > > > > > > Hi all, > > > > > > > > There was a joint discussion between BookKeeper PMC and > DistributedLog > > > PPMC > > > > about moving the development of DistributedLog as part of Apache > > > > BookKeeper. The reasons behind it are: > > > > > > > > First, DistributedLog is born as an extension to BookKeeper, to offer > > > > continuous log streams as the service. The ledger API in bookkeeper > is > > a > > > > lower level API and has learning curves, while the log stream API in > > > > distributedlog is a higher level API that simplifies the usage. The > > > > combination of ledger API and stream API would offer a better > > > > developer/user experience for applications. > > > > > > > > Secondly, using ledgers to build continuous (re-openable) log stream > > is a > > > > very common pattern for BookKeeper use cases. We did this for HDFS > > > namenode > > > > journal, for Hedwig, for DistributedLog, and for Pulsar. The same > > pattern > > > > has been implemented again and again. Merge DistributedLog (also > > > > ManagedLedger in Pulsar) with BookKeeper will consolidate all the > > > > development efforts around this common 'log stream' pattern. > > > > > > > > Thirdly, the 'log' stream abstraction is a good abstraction for both > > > > messaging and streaming. Internally at BookKeeper, there are a few > > places > > > > that can use such 'messaging' facility to improve bookkeeper itself. > > the > > > > log stream in DistributedLog can be used internally at bookkeeper for > > > > streaming changes as well. > > > > > > > > We choose merging DistributedLog as subproject rather than modules. > It > > > is a > > > > softer starting point to avoid disrupting the folks who are depending > > on > > > > the ledger api alone. The BookKeeper PMC and DistributedLog PPMC has > > > > achieved initial consensus on this merge. There is an official VOTE > > > ongoing > > > > in bookkeeper PMC. We'd like to bring this to the distributedlog > > > community > > > > for a community vote following the guidelines here > > > > <http://incubator.apache.org/guides/graduation.html#subproject>. > > > > > > > > Please vote +1 if in favor of merging DistributedLog to BookKeeper, > and > > > -1 > > > > if not. The vote will be open until Tuesday 13rd June, 18:00 PST. > > > > > > > > - Sijie > > > > > > > > > >
