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From: Pablo Musa <pablo@psafe.com>
To: "user@hbase.apache.org" <user@hbase.apache.org>
Date: Mon, 3 Sep 2012 17:22:21 -0300
Subject: Put and Increment atomically
Thread-Topic: Put and Increment atomically
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Hey guys,
I want to insert new columns into a row:fam and increment 2 of them atomica=
lly.
In other words, I am using columns as entries and I want to count them and =
their
sizes.

For example, I want to insert these new columns:
row1:f1:c1 =3D h_v_j
row1:f1:c2 =3D g_r_w
row1:f1:c3 =3D z_l_p
row1:f1:c4 =3D n_m_j

*The values are fixed size information which I used '_' as separator above.

But I also want to keep track of how many columns do I have and sum one of
the information.
row1:f1:count =3D Increment(4)
row1:f1:size =3D Increment(j+w+p+j)

I can do them separately, send the puts and then send the increments, but
I would like to know if it is possible to do it atomically.

I did some search and found the link below, but it only talks about put/del=
ete.
Why not adding increment?
http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/RowMutations=
.html

I don't know if it is clear enough.

Thanks,
Pablo

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