Github user michaelarusso commented on the issue:
https://github.com/apache/usergrid/pull/571
I'm not as familiar with the Chop testing framework. However, I can't see
how it's beneficial to add 5.4.x Elasticsearch dependencies to the testing
framework when Usergrid itself is not updated to support anything newer than
1.x of Elasticsearch.
In terms of effort to add support for later versions of Elasticsearch, I
imagine this to be a big effort. There will be breaking changes, maybe many,
between 1.x and 5.x versions of Elasticsearch. The approach has to be thought
through very carefully, otherwise existing users of Usergrid will be left in an
awkward situation when trying to upgrade. New users might be fine, but the
breaking changes in the cluster for existing users may just support a major
version bump in Usergrid itself.
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