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From Stack <st...@duboce.net>
Subject Re: How to count the number of columns in a row
Date Wed, 22 Jun 2011 15:06:17 GMT
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
<michael_segel@hotmail.com> 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: lucian.george.iordache@gmail.com
>> To: hbase-user@hadoop.apache.org
>>
>> 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
>

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