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From Ted Yu <yuzhih...@gmail.com>
Subject Re: HBASE and MOB
Date Mon, 15 May 2017 20:21:35 GMT
bq. concentrate on getting MOB out the door in 2.0.

+1


On Mon, May 15, 2017 at 1:11 PM, Sean Busbey <busbey@apache.org> wrote:

> -user@hbase to bcc (I encourage folks interest to subscribe to dev@hbase)
>
> Personally, I'd rather see us concentrate on getting MOB out the door in
> 2.0.
>
> branch-1 is now over 2 years old; I'd want some rigorous proof that we're
> not setting our downstream users up for surprises by making major changes
> to the critical path.
>
> On May 15, 2017 06:45, "ashish singhi" <ashish.singhi@huawei.com> wrote:
>
> > Hi.
> >
> > Can we revive HBASE-15370: Backport Moderate Object Storage (MOB) to
> > branch-1 ?
> >
> > Even we have customers using this feature and it requires lots of effort
> > to backport MOB patches from master branch to the released versions as
> the
> > code base has lots of differences.
> >
> > Regards,
> > Ashish
> >
> > -----Original Message-----
> > From: Ted Yu [mailto:yuzhihong@gmail.com]
> > Sent: 12 May 2017 22:25
> > To: user@hbase.apache.org
> > Subject: Re: HBASE and MOB
> >
> > MOB is also backported in HDP 2.5.x
> >
> > FYI
> >
> > On Fri, May 12, 2017 at 9:51 AM, anil gupta <anilgupta84@gmail.com>
> wrote:
> >
> > > Backporting MOB wont be a trivial task.
> > > AFAIK, Cloudera backported MOB to HBase1.x  branch for CDH(its not in
> > > apache HBase1.x branch yet). It might be easier to just use CDH for
> MOB.
> > >
> > > On Fri, May 12, 2017 at 8:51 AM, Jean-Marc Spaggiari <
> > > jean-marc@spaggiari.org> wrote:
> > >
> > > > Thanks for those details.
> > > >
> > > > How big are you PDF? Are they all small size? If they are not above
> > > > 1MB, MOBs will not really be 100% mandatory. Even if few of them are
> > above.
> > > >
> > > > If you want to apply the patch on another branch,this is what is
> > > > called a back port (like Ted said before) and will require a pretty
> > > > good amount of work. You can jump on that, but if you are not used
> > > > to the HBase code, it might be a pretty big challenge...
> > > >
> > > > Another way is to look for an HBase distribution that already
> > > > includes
> > > the
> > > > MOB code already.
> > > >
> > > > JMS
> > > >
> > > > 2017-05-12 11:21 GMT-04:00 F. T. <bibos68@hotmail.fr>:
> > > >
> > > > > Hi Jean Marc
> > > > >
> > > > > I'm using a 1.2.3 version. I downloaded a "bin" version from
> > > > > Apache official web site. Maybe I've to install it from the "src"
> > > > > option with
> > > > mvn ?
> > > > >
> > > > > I would like index PDF into Hbase and use it in a Solr collection.
> > > > >
> > > > > In fact I would like reproduce this process :
> > > > > http://blog.cloudera.com/blog/2015/10/how-to-index-scanned-
> > > > > pdfs-at-scale-using-fewer-than-50-lines-of-code/
> > > > >
> > > > >
> > > > > But maybe is there another solution to reproduce it .
> > > > >
> > > > > Fred
> > > > >
> > > > >
> > > > > ________________________________
> > > > > De : Jean-Marc Spaggiari <jean-marc@spaggiari.org> Envoyé
:
> > > > > vendredi 12 mai 2017 17:06 À : user Objet : Re: HBASE and MOB
> > > > >
> > > > > Hi Fred,
> > > > >
> > > > > Can you please confirm the following information?
> > > > >
> > > > > 1) What exact version of HBase are you using? From a distribution,
> > > build
> > > > by
> > > > > yourself, from the JARs, etc.
> > > > > 2) Why do you think you need the MOB feature
> > > > > 3) Is an upgrade an option for you or not really.
> > > > >
> > > > > Thanks,
> > > > >
> > > > > JMS
> > > > >
> > > > >
> > > > > 2017-05-12 11:02 GMT-04:00 Ted Yu <yuzhihong@gmail.com>:
> > > > >
> > > > > > It is defined here in
> > > > > > hbase-client/src/main/java/org/apache/hadoop/hbase/
> > > > > HColumnDescriptor.java:
> > > > > >   public static final String IS_MOB = "IS_MOB";
> > > > > >
> > > > > > MOB feature hasn't been backported to branch-1 (or earlier
> > releases).
> > > > > >
> > > > > > Looks like you're using a vendor's release.
> > > > > >
> > > > > > Consider contacting the corresponding mailing list if you are
> > stuck.
> > > > > >
> > > > > > On Fri, May 12, 2017 at 7:59 AM, F. T. <bibos68@hotmail.fr>
> wrote:
> > > > > >
> > > > > > > Hi all,
> > > > > > >
> > > > > > > I'd like to use MOB in HBase to store PDF files. I'm using
> > > > > > > Hbase
> > > > 1.2.3
> > > > > > but
> > > > > > > I'get this error creating a table with MOB column : NameError:
> > > > > > > uninitialized constant IS_MOB.
> > > > > > >
> > > > > > > A lot of web sites (including Apache official web site)
talk
> > > > > > > about
> > > > the
> > > > > > > patch 11339 or HBase 2.0.0, but, I don't find any explanation
> > > > > > > about
> > > > the
> > > > > > way
> > > > > > > to install this patch and
> > > > > > >
> > > > > > > I can't find the 2.0.0 version anywhere. So I'm completly
lost.
> > > Could
> > > > > you
> > > > > > > help me please ?
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > > Thanks & Regards,
> > > Anil Gupta
> > >
> >
>

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