Hi Esteban, Yes, I found it moments ago. Is it as efficient as the Row scan?
And can I have millions of columns for a row with no or little performance impaction? (the traditional tall vs wide problem, the hbase manual recommends tall table than wide table). Jianshi On Thu, Jul 17, 2014 at 3:01 PM, Esteban Gutierrez <[email protected]> wrote: > Hi Jianshi, > > Have you looked into the ColumnRangeFilter? > > http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/filter/ColumnRangeFilter.html > > cheers, > esteban. > > > -- > Cloudera, Inc. > > > > On Wed, Jul 16, 2014 at 11:40 PM, Jianshi Huang <[email protected]> > wrote: > > > Hi, > > > > I scanned through HBase' Scan API and couldn't find out how to scan a > range > > of columns in a row. > > > > It seems I can only do scan(startRow, endRow), which are both just > RowKeys. > > > > What's the most efficient way to do it? Should I use a Filter? I heard > > filter is not as efficient as RK scans, how much slower is it? > > > > (BTW, I was using Accumulo for the same thing and it has a really nice > API > > (Range, Key) for it. A Key is a combination of RK+CF+CQ+TS.) > > > > Am I missing anything? > > > > Cheers, > > -- > > Jianshi Huang > > > > LinkedIn: jianshi > > Twitter: @jshuang > > Github & Blog: http://huangjs.github.com/ > > > -- Jianshi Huang LinkedIn: jianshi Twitter: @jshuang Github & Blog: http://huangjs.github.com/
