Thanks Todd. I'll check svn. 27 декабря 2011 г. 5:00 пользователь Todd Lipcon <[email protected]>написал:
> That's my github but I don't regularly push there -- so it's a bit out of > date. Working from the apache svn is probably the best bet > > Todd > > On Sunday, December 25, 2011, Andrey Stepachev <[email protected]> wrote: > > Thanks! > > > > 25 декабря 2011 г. 3:13 пользователь Ted Yu <[email protected]> > написал: > > > >> Andrey: > >> A quick search led me to https://github.com/toddlipcon where you would > be > >> able to find: > >> https://github.com/toddlipcon/hadoop-common > >> > >> Cheers > >> > >> On Sat, Dec 24, 2011 at 12:39 PM, Andrey Stepachev <[email protected]> > >> wrote: > >> > >> > 23 декабря 2011 г. 22:48 пользователь Todd Lipcon <[email protected] > >> > >написал: > >> > > >> > > On Tue, Dec 20, 2011 at 12:56 AM, Andrey Stepachev < > [email protected]> > >> > > wrote: > >> > > > I see, that most issues addressed to HA branch. > >> > > > What version this branch is applied to? 0.22 or > >> > > > i should build hadoop from sources? > >> > > > >> > > It's currently only available in the HDFS-1623 branch, which is in > >> > > active development and definitely shouldn't be used unless you plan > to > >> > > help us finish debugging it :) There are still some known bugs and > >> > > deficiencies to address before we merge. > >> > > > >> > > >> > Looks like this is one of possible scenarios :). We need > >> > some solution for HA, but no one (except MapR) still exists. > >> > So we must use MapR (costs, closed) or debug some > >> > not-ready-yet solution. > >> > > >> > > >> > > > >> > > The plan is to merge it into 0.23 but not 0.22 - it will hopefully > be > >> > > merged in January. We'll also make it available in CDH4 beta > releases > >> > > early next year. > >> > > > >> > > >> > Sounds good. But still can't find such branch in cloudera (or any > other) > >> > github > >> > repositories. > >> > Is it publicly available right now, or it in some private repository? > >> > > >> > > >> > > > >> > > -Todd > >> > > > >> > > > > >> > > > 20 декабря 2011 г. 11:46 пользователь Todd Lipcon < > [email protected] > >> > > >написал: > >> > > > > >> > > >> Hi Andrey, > >> > > >> > >> > > >> I don't think anyone has ever run Ceph in a production use case, > >> much > >> > > >> less run it in a production use case with HBase. > >> > > >> > >> > > >> The SPOF problem is currently being addressed and will be > available > >> > > >> for production use by the middle of next calendar year. It will > be > >> > > >> available for preview/beta usage in Q1 (it's already working in > >> > > >> development setups - feel free to follow HDFS-1623 for details) > >> > > >> > >> > > >> I think you're way better off waiting for the HA NameNode support > in > >> > > >> HDFS than going with an unproven FS like Ceph. Ceph certainly has > >> > > >> promise and is a nice design, but it hasn't had the years of > >> pounding > >> > > >> that HDFS has. > >> > > >> > >> > > >> -Todd > >> > > >> > >> > > >> On Mon, Dec 19, 2011 at 10:23 PM, Andrey Stepachev < > >> [email protected]> > >> > > >> wrote: > >> > > >> > Hi all. > >> > > >> > > >> > > >> > I have requirements to use hbase in several datacenters. > >> > > >> > But HDFS has as SPOF, so we can't use it. > >> > > >> > I plan to use ceph as the file system for hbase. > >> > > >> > > >> > > >> > In general, interested in issues of: > >> > > >> > a) use the hadoop + сeph in the production environment > >> > > >> > b) using hbase + ceph in the production environment > >> > > >> > > >> > > >> > In particular: > >> > > >> > Ceph Wiki states that the integration of hadoop/ceph has the > >> problem > >> > > in > >> > > >> the > >> > > >> > form of modification dates of the files. > >> > > >> > Does hbase uses modification times f-- > > Андрей. > > > > -- > Todd Lipcon > Software Engineer, Cloudera > -- Андрей.
