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From Bruno Dumon <br...@outerthought.org>
Subject Atomic update of a single row
Date Tue, 26 Jan 2010 09:42:33 GMT

At various places I have read that row writes are atomic.

However, from a curious look at the code of the put method in
HRegion.java, it seems like the updates of a put operation are written
to the WAL only for one column family at a time. Is this understanding
correct, so would it be more correct to say that the writes are
actually atomic per column family within a row?

On a related note, it would be nice if one could do both put and
delete operations on one row in an atomic manner.



Bruno Dumon

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