Explain is not working with ES1.2.0

[nucflash]

It seems that the explain functionality in ES1.2.0 has changed (older versions since 2012 may also be affected) and pyes is not returning the expected additional information in the returned hits.

As of ES1.2.0 explain has its own API and it needs to be called per query and per document id. I cannot find something like this in the code. The documentation of pyes seems also to be outdated.