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From Huaxiang Sun <h...@cloudera.com>
Subject Re: HBASE and MOB
Date Mon, 15 May 2017 20:50:41 GMT
+1, not a trivial effort.

> On May 15, 2017, at 1:31 PM, Mikhail Antonov <olorinbant@gmail.com> wrote:
> 
> +1 for not trying to backport massive new features to branch-1.
> 
> IMO Branch-1 release lines should be continuing the path towards
> maintenance mode only.
> 
> -Mikhail
> 
> On Mon, May 15, 2017 at 1:21 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> 
>> 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
>>>>> 
>>>> 
>>> 
>> 
> 
> 
> 
> -- 
> Thanks,
> Michael Antonov


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