Github user fireboy1919 commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/761#issuecomment-210094906 It's a REST call, so potentially, you could make a client side call to combine the two pieces of information. But the problem is the same one the backend is solving by being backend - the memory limits imposed by the browser are small compared to what the server can handle. A smarter approach would probably be to get that kind of thing would be to make a different kind backend component that can transform the data the way that you want it to be transformed.
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