Overwriting qualifiers in an existing table

[Amit Sela <am...@infolinks.com>]

Hi all,

I'm trying to change the qualifiers of ALL of the entries in my table.
Until now my qualifiers had a header, and now I wanna get rid of it - this
actually means removing the first 5 bytes.
Are there any suggestions about the best way to do this for the whole table
(every row...)

Thanks,

Amit.

Re: Overwriting qualifiers in an existing table

[Ian Varley <iv...@salesforce.com>]

Map/Reduce jobs are generally the best approach for working with every row in a table. You can read all about it here:

http://hbase.apache.org/book.html#mapreduce

I've never tried doing the specific scenario you're describing, but seems like it should work; you could change the example in 7.2.2 to Put your new qualifier, and Delete your old one. Try it, and if you're stumped, post a more detailed question about it here.

Thanks!
Ian

On Apr 24, 2012, at 1:26 AM, Amit Sela wrote:

Hi all,

I'm trying to change the qualifiers of ALL of the entries in my table.
Until now my qualifiers had a header, and now I wanna get rid of it - this
actually means removing the first 5 bytes.
Are there any suggestions about the best way to do this for the whole table
(every row...)

Thanks,

Amit.