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From Antonio Si <antonio...@gmail.com>
Subject Re: how to get rowkey with largest number of versions
Date Wed, 22 Aug 2018 19:27:40 GMT
Thanks for all the info. I will give it a try.

On Wed, Aug 22, 2018 at 12:13 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Antonio:
> Please take a look at CellCounter under hbase-mapreduce module which may be
> of use to you:
>
>  * 6. Total number of versions of each qualifier.
>
>
> Please note that the max versions may fluctuate depending on when major
> compaction kicks in.
>
>
> FYI
>
> On Wed, Aug 22, 2018 at 11:53 AM Ankit Singhal <ankitsinghal59@gmail.com>
> wrote:
>
> > I don't think so if there is any direct way.
> > You may need to do a raw scan of a full table and count the number of
> > versions of a column returned for each row to calculate the max. (you can
> > optimize this with custom coprocessor by returning a single row key
> having
> > the largest versions of a column through each regionserver and at client
> > select max out of all results)
> >
> > On Wed, Aug 22, 2018 at 11:28 AM Antonio Si <antonio.si@gmail.com>
> wrote:
> >
> > > Hi,
> > >
> > > I am new to hbase. I am wondering how I could find out which rowkey has
> > the
> > > largest number of versions in a column family.
> > >
> > > Any pointer would be very helpful.
> > >
> > > Thanks.
> > >
> > > Antonio.
> > >
> >
>

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