And there is org/apache/hadoop/hbase/mapreduce/CellCounter.java in TRUNK On Wed, Jun 22, 2011 at 8:06 AM, Stack <[email protected]> wrote:
> What Michael says. Subclass > > http://hbase.apache.org/xref/org/apache/hadoop/hbase/mapreduce/RowCounter.html > . > It does 90% of what you need. > St.Ack > > On Wed, Jun 22, 2011 at 6:15 AM, Michael Segel > <[email protected]> wrote: > > > > Unfortunately no. > > > > Columns may or may not exist and its on a per row basis. > > You can write a simple map job (No reduce) to use dynamic counters to > determine the unique names of the columns and in how many rows these columns > exist. > > You could also keep track of the number of columns per row, the max > number of columns, the min number of columns etc .. etc .. > > > > HTH > > > > -Mike > > > > > >> Date: Wed, 22 Jun 2011 15:49:47 +0300 > >> Subject: How to count the number of columns in a row > >> From: [email protected] > >> To: [email protected] > >> > >> Hello all, > >> > >> Is there a way to count the number of columns in a hbase row using hbase > >> console (I know that there is a "count" command, but it counts only the > >> rows). > >> > >> -- > >> Best Regards, > >> Lucian > > >
