Github user jeffsteinmetz commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/520#issuecomment-162800158
Things also get interesting when you return Json with nested objects and
try to treat them like a flat relational database response (shown in the
example pie charts and sql like table response examples in this PR).
I believe the idea behind this PR is to return the raw Elasticsearch Json,
and potentially graph it or put it into tables? Admittedly, I've only passed
over this PR with a quick scan of your source. Happy to dig into it more over
time.
ES-hadoop (native spark) has been working toward getting a variety of json
use cases working with dataframes.
It is a problem being worked on in es-hadoop, thats fairly complex. I.e.
how would it handle this?
```
{
"foo" : [5,6],
"nested": {
"bar" : [{"date":"2015-01-01", "scores":[1,2]}, {"date":"2015-01-01",
"scores":[3,4]}],
"what": "now" }
}
```
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