solved _source false issue using Union<>

[pathikdevani]

when source to set false, Nest consider exclude["*"]. it's effect on performance.

i solve this using Union<>.

[russcam]

Hey @pathikdevani, we maintain backwards binary compatibility within major versions of NEST and unfortunately this solution would break backwards binary compatibility (bwc) for 2.x; We would need to come up with another way of handling this for 2.x that maintains bwc.

This fix would be great to get into master though that is tracking against Elasticsearch 5.x; would you be able to close this PR and retarget the change against master?

[pathikdevani]

@russcam thanks for replay.

It is very serious issue when we use aggregation. If we can add change in 2.x then it's very useful.
Anything i can do for add change in 2.x?

And I create new PR for master branch (5.x).

[gmarz]

@pathikdevani I just opened the above PR (#2223) which proposes a fix that's backwards compatible with 2.x, which will likely make it into the next release.

I'll work on incorporating your PR into master. Thanks for raising this!

[gmarz]

@pathikdevani this is now pushed to master with the above commit. Thanks again for the PR!

[pathikdevani]

Thank you @gmarz