I need to update a value, a numeric value, in Accumulo where the result is the sum of the old and the new as opposed to the new simply replacing the old.
I read in a white paper that it is possible but it didn't say how. I Googled and found a bit about Accumulo keeping a history that could be summed. Yes, I knew about the history so I suppose that might work. But it apparently requires compaction. Really! At first blush, this doesn't sound like such a solid solution. My question is, Is this summing-of-the-history the way to achieve my desired result or is there a better way? Either way, how do you do that? Thanks -- There are ways and there are ways, Geoffry Roberts
