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From "Parise, Jonathan" <>
Subject Watching for Changes with Write Ahead Log?
Date Tue, 29 Sep 2015 21:41:25 GMT

I'm working on a system where generally changes to Accumulo will come through that system.
However, in some cases, another system may change data without my system being aware of it.

What I would like to do is somehow listen for changes to the tables my system cares about.
I know there is a write ahead log that I could potentially listen to for changes, but I don't
know how to use it. I looked around for some documentation about it, and I don't see much.
I get the impression that it isn't really intended for this type of use case.

Does anyone have any suggestions on how to watch a table for changes and then determine if
those changes were made by a different system.

Is there some documentation about how to use the write ahead log?


Jon Parise

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