[Django]-MapperParsingException on doing rebuild_index in django-haystack with elasticsearch

There is a relevant django-haystack issue to remove the boost parameter which is no longer supported in ElasticSearch >= 2:

• Remove boost which is now unsupported

Before that change, django-haystack was using the _boost parameter in the mapping for the ElasticSearch backend. The change was made to the master branch. You can do things at this moment:

• install the development version of django-haystack directly from github:

  pip install -e git+https://github.com/toastdriven/django-haystack.git@master#egg=django-haystack
  

• downgrade ElasticSearch to the latest stable version before the upgrade to the 2nd, I think it is 1.7.3

Also, here is the relevant discussion:

• Django haystack LocationField created as string instead of geo_point in elasticsearch