possibly incorrect use of Lucene OneMerge.totalBytesSize
fixes #2643
Let the update index settings action fail if non dynamic settings are changed for open indices.
Closes #2647
updating non dynamic settings throws an error now
Warmers do not load field data cache for sorting on new segments
fixes #2649
delay reroute only after we publish that a shard has started
Optimize conversion to a cacheable DocIdSet
Fix ScriptFilter cache key calculation

Fixes #2651
add 0.20.6 ver
add note on not using totalSize in merge
Clear cache: allow to invalidate specific filter cache keys
closes #2653
Simplified range syntax when using a query string
closes #2655
initial facet refactoring
the main goal of the facet refactoring is to allow for two modes of facet execution, collector based, that get callbacks as hist match, and post based, which iterates over all the relevant hits
it also includes a some simplification of the facet implementation
fix check on which settings to change on
allow to access the global node settings in a static manner
Fix race condition in adding TimeoutClusterStateListener

Fixes #2658
add our own bloom filter implementation
uses more hash iterations, yet require less memory for the same fpp
relates to #2411
Expose CJKWidthTokenFilter and CJKBigramTokenFilter

Closes #2660
Fixed nested facets with filters.
refactoring getter/setters

Fixes #2657
Added Testcase and BugFix fixing #2626 where GeoShape intersects filter omitted matching docs.

SpatialPrefixTree#recursiveGetNodes uses an optimization that prevents
recursion into the deepest tree level if a parent node in the penultimate
level covers all its children.  This produces a bug if the optimization
happens both at indexing and at query/filter time.

This patch fixes the bug by disabling the optimization at indexing time
(to avoid adding overhead for query-heavy workloads).

See LUCENE-4770 for reference