Hi Wei: There is a jira Hbase-3996, does this sound something you are looking for?
Regards, Jerry On Friday, August 10, 2012, Bryan Beaudreault wrote: > Use 3 jobs: 1 to scan each table. The third could do a map-side join. Make > sure to use the same sort and partitions on the first two. > > Sent from iPhone. > > On Aug 10, 2012, at 9:41 AM, Weishung Chung <[email protected]<javascript:;>> > wrote: > > > but they are in production now > > > > On Fri, Aug 10, 2012 at 6:39 AM, Weishung Chung > > <[email protected]<javascript:;>> > wrote: > > > >> Thank you, I am trying to avoid to fetch by gets and would like to do > >> something like hadoop MultipleInputs. > >> Yes, it would be nice if i could denormalize and remodel the schema. > >> > >> > >> On Fri, Aug 10, 2012 at 6:29 AM, Amandeep Khurana > >> <[email protected]<javascript:;> > >wrote: > >> > >>> You can scan over one of the tables (using TableInputFormat) and do > simple > >>> gets on the other table for every row that you want to join. > >>> > >>> An interesting question to address here would be - why even need a > join. > >>> Can you talk more about the data and what you are trying to do? In > general > >>> you really want to denormalize and not need joins when working with > HBase > >>> (or for that matter most NoSQL stores). > >>> > >>> On Fri, Aug 10, 2012 at 6:52 PM, Weishung Chung > >>> <[email protected]<javascript:;> > > > >>> wrote: > >>> > >>>> Basically a join of two data sets on the same row key. > >>>> > >>>> On Fri, Aug 10, 2012 at 6:12 AM, Amandeep Khurana > >>>> <[email protected]<javascript:;> > > > >>>> wrote: > >>>> > >>>>> How do you want to use two tables? Can you explain your algo a bit? > >>>>> > >>>>> On Fri, Aug 10, 2012 at 6:40 PM, Weishung Chung > >>>>> <[email protected]<javascript:;> > > > >>>>> wrote: > >>>>> > >>>>>> Hi HBase users, > >>>>>> > >>>>>> I need to pull data from 2 HBase tables in a mapreduce job. For 1 > >>> table > >>>>>> input, I use TableMapReduceUtil.initTableMapperJob. Is there another > >>>>> method > >>>>>> for multitable inputs ? > >>>>>> > >>>>>> Thank you, > >>>>>> Wei Shung > >>>>>> > >>>>> > >>>> > >>> > >> > >> >
