> Date: Mon, 6 Dec 2010 10:03:02 -0800
> Subject: Re: Maps sharing a common table.
> From: [email protected]
> To: [email protected]
>
> You need to instantiate 1 HTable per Map task, then reuse it for every
> map() invocations. Sharing the actual object between JVMs isn't what
> you want to do.
>
> J-D
>
In Mapper class see Mapper.setup() and set up a class instance variable for the
HTable connection.
> On Mon, Dec 6, 2010 at 9:58 AM, rajgopalv <[email protected]> wrote:
> >
> > Hi,
> > I'm writing a MR job to read values from a CSV file and insert it into hbase
> > using Htable.put()
> > So each map function will insert one row.
> > There is no reduce function.
> >
> > But now, i open a htable instance inside every map function. This is bad..
> > i know...
> > but how can I share a common htable instance between multiple map jobs. ?
> > --
> > View this message in context:
> > http://old.nabble.com/Maps-sharing-a-common-table.-tp30366727p30366727.html
> > Sent from the HBase User mailing list archive at Nabble.com.
> >
> >
