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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Custom Filter on hbase Column
Date Thu, 11 Sep 2014 21:40:07 GMT
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
> >> > >
> >> >
> >>
> >
> >
>

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