To fix the word-cloud collection on ES 5.x will probably require use
of the terminate_after parameter to replace the unsupported limit
filter.

terminate_after  appeared in 1.x but was marked experimental.
It seems to be no longer experimental since 2.0.

On 4 January 2017 at 12:40, sebb <[email protected]> wrote:
> ES 5.x drops the scroll-scan search type.
>
> This was originally deprecated in 2.1 [1] released in Nov 2015
>
> The recommended approach is to use a scroll request that sorts
> documents in _doc order.
> Such sorts have been optimised to provide the same performance
> characteristics as the former scan search type.
>
> However this optimisation presumably only applies from versions 2.1.
> Earlier versions should work, but could be much slower.
>
> Dropping official support for earlier versions would allow us to make
> the change without worrying about the performance impact.
>
> The alternative is to provide configurable behaviour.
>
> There may be other reasons to bump the minimum supported version further.
>
> Note: there will be no further releases of the 1.7 line after 1.7.6,
> released in Nov 2016 [3]
>
> [1] 
> https://www.elastic.co/guide/en/elasticsearch/reference/2.1/breaking_21_search_changes.html#breaking_21_search_changes
> [2] https://www.elastic.co/blog/elasticsearch-2-1-0-and-2-0-1-released
> [3] https://www.elastic.co/blog/category/releases

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