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From Anoop John <anoop.hb...@gmail.com>
Subject Re: Custom Filter on hbase Column
Date Fri, 12 Sep 2014 04:51:38 GMT
And u have to implement
transformCell(*final* Cell v)
in your custom Filter.

JFYI

-Anoop-

On Fri, Sep 12, 2014 at 4:36 AM, Nishanth S <nishanth.2884@gmail.com> wrote:

> Sure  Sean.This is much needed.
>
> -Nishan
>
> On Thu, Sep 11, 2014 at 3:57 PM, Sean Busbey <busbey@cloudera.com> wrote:
>
> > I filed HBASE-11950 to get some details added to the book on this
> topic[1].
> >
> > Nishanth, could you follow that ticket and give feedback on whatever
> update
> > ends up proposed?
> >
> > [1]: https://issues.apache.org/jira/browse/HBASE-11950
> >
> > On Thu, Sep 11, 2014 at 4:40 PM, Ted Yu <yuzhihong@gmail.com> wrote:
> >
> > > See http://search-hadoop.com/m/DHED4xWh622
> > >
> > > On Thu, Sep 11, 2014 at 2:37 PM, Nishanth S <nishanth.2884@gmail.com>
> > > wrote:
> > >
> > > > Hey All,
> > > >
> > > > I am sorry if this is a naive question.Do we need to generate a proto
> > > file
> > > > using proto buffer compiler when implementing a filter.I did not see
> > that
> > > > any where in the documentation.Can some one  help please?
> > > >
> > > > On Thu, Sep 11, 2014 at 12:41 PM, Nishanth S <
> nishanth.2884@gmail.com>
> > > > wrote:
> > > >
> > > > > Thanks Dima and Ted.Yes I need to  return the first the 1000
> > > > > characters.There is no matching involved.
> > > > >
> > > > > -Nishan
> > > > >
> > > > > On Thu, Sep 11, 2014 at 12:24 PM, Ted Yu <yuzhihong@gmail.com>
> > wrote:
> > > > >
> > > > >> In Nishanth's case, the 5K message is stored in one KeyValue,
> right
> > ?
> > > > >>
> > > > >> If only the first 1000 Characters of this message are to be
> > returned,
> > > > >> a new KeyValue
> > > > >> needs to be composed and returned.
> > > > >>
> > > > >> Cheers
> > > > >>
> > > > >> On Thu, Sep 11, 2014 at 11:09 AM, Dima Spivak <
> dspivak@cloudera.com
> > >
> > > > >> wrote:
> > > > >>
> > > > >> > Hi Nishanth,
> > > > >> >
> > > > >> > Take a look at http://hbase.apache.org/book/client.filter.html
> .
> > > If I
> > > > >> > understand your use case correctly, you might want to look
at
> > > > >> > RegexStringComparator to match the first 1000 characters
of your
> > > > column
> > > > >> > qualifier.
> > > > >> >
> > > > >> > -Dima
> > > > >> >
> > > > >> > On Thu, Sep 11, 2014 at 12:37 PM, Nishanth S <
> > > nishanth.2884@gmail.com
> > > > >
> > > > >> > wrote:
> > > > >> >
> > > > >> > > Hi All,
> > > > >> > >
> > > > >> > > I have an hbase table with multiple cfs (say c1,c2,c3).Each
of
> > > this
> > > > >> > column
> > > > >> > > family has  a column 'message' which is about 5K.What
I need
> to
> > do
> > > > is
> > > > >> to
> > > > >> > > grab only the first 1000 Characters of this message
when I do
> a
> > > get
> > > > on
> > > > >> > the
> > > > >> > > table using row Key.I was thinking of using  filters
to do
> this
> > on
> > > > >> hbase
> > > > >> > > sever side.Can some one help me on how to go about
this.
> > > > >> > >
> > > > >> > >
> > > > >> > > Thanks,
> > > > >> > > Nishan
> > > > >> > >
> > > > >> >
> > > > >>
> > > > >
> > > > >
> > > >
> > >
> >
> >
> >
> > --
> > Sean
> >
>

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