hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Krishna Kalyan <krishnakaly...@gmail.com>
Subject Re: Duplicate Value Inserts in HBase
Date Tue, 21 Oct 2014 17:29:11 GMT
Thanks for you replies Jean,Dhaval

On Tue, Oct 21, 2014 at 6:57 PM, Dhaval Shah <prince_mithibai@yahoo.co.in>
wrote:

> You can achieve what you want using versions and some hackery with
> timestamps
>
>
> Sent from my T-Mobile 4G LTE Device
>
>
> -------- Original message --------
> From: Jean-Marc Spaggiari <jean-marc@spaggiari.org>
> Date:10/21/2014  9:02 AM  (GMT-05:00)
> To: user <user@hbase.apache.org>
> Cc:
> Subject: Re: Duplicate Value Inserts in HBase
>
> You can do check and puts to validate if value is already there, but it's
> slower...
>
> 2014-10-21 8:50 GMT-04:00 Krishna Kalyan <krishnakalyan3@gmail.com>:
>
> > Thanks Jean,
> > If i put the same value in my table for a particular column for a rowkey
> i
> > want HBase reject this value and retain old value with old time stamp.
> > In other words update only when value changes.
> >
> > Regards,
> > Krishna
> >
> > On Tue, Oct 21, 2014 at 6:02 PM, Jean-Marc Spaggiari <
> > jean-marc@spaggiari.org> wrote:
> >
> > > Hi Krishna,
> > >
> > > HBase will store them in the same row, same cell but you will have 2
> > > versions. If you want to keep just one, setup the version=1 on the
> table
> > > side and only one will be stored. Is that what yo mean?
> > >
> > > JM
> > >
> > > 2014-10-21 8:29 GMT-04:00 Krishna Kalyan <krishnakalyan3@gmail.com>:
> > >
> > > > Hi,
> > > > I have a HBase table which is populated from pig using PigStorage.
> > > > While inserting, suppose for rowkey i have a duplicate value.
> > > > Is there a way to prevent an update?.
> > > > I want to maintain the version history for my values which are
> unique.
> > > >
> > > > Regards,
> > > > Krishna
> > > >
> > >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message