Github user rxin commented on the pull request:
https://github.com/apache/spark/pull/1314#issuecomment-48373784
Hi @andrewor14
We would need to at least keep a local fallback of the jquery even if we
use a CDN version because a lot of production Spark deployments don't actually
have access to the external Internet.
For visualization, it is not yet clear what we are going to include in the
future. And even if we do, most visualization libs work perfectly fine without
jquery. I was not advocating re-implementing all the features of all these
libraries. Rather, most of the time it is trivial to implement the
functionalities we need via vanilla JS. In this case, I bet we can implement a
comparable tooltip in dozens of lines. If we need more features of jquery, we
can pull it in later.
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