support highlighting and other non _source headers

[costin]

When using highlighting, the _source itself is not relevant any more. Going forward, the connector should provide support for this potentially by capturing the extra information under dedicated headers.

See the forum post discussion here.

[dripp1]

This is still a major unsolved issue. In the latest es-hadoop, not only highlighting is not returned, the highlighting and post_filter parts of the original query are removed

[weand]

i see this issue is still open.

are there plans to add this feature any time soon?

[siddharthsourabh]

@costin Any plans to include this request? For the read path, we actually need inner_hits segment, which is also being ignored by the Parser. Any possible work-arounds?

[anandtripathi5]

@costin is it still under development. I wanted to access inner_hits from the response of elastic search and I cannot access it from the metadata column