Call callback on actual mapping processed
only callback the registered callback listeners when mapping have actually been processed...
closes #6748
Upgrade Jackson to 2.4.1
closes #6757
Docs: Language analyzers
Clarified the use of stem_exclusion and the keyword_marker
token filter

Closes #6613
Docs: fixed a typo in the docs

Closes: #6718
Docs: Update histogram-aggregation.asciidoc

filter in a filtered query should be under "filter" key

Closes #6738
Allow primaries that have never been allocated to be allocated if under the low watermark

Fixes #6196
[Relocation] process pending mapping update in phase 2

During phase1 we copy over all lucene segments. These may refer to mapping updates that are still queued up to be sent to master. We must make sure those pending updates are processed before completing the relocation.

Relates to #6648

Closes #6762