Highlights for this Solr release include:
Critical Security Update: Fix for CVE-2017-12629 which is a working 0-day exploit reported on the public mailing list.
Auto-scaling: Solr can now move replicas automatically when a new node is added or an existing node is removed using the auto scaling policy framework introduced in 7.0
Auto-scaling: The 'autoAddReplicas' feature which was limited to shared file systems is now available for all file systems. It has been ported to use the new autoscaling framework internally.
Auto-scaling: New set-trigger, remove-trigger, set-listener, remove-listener, suspend-trigger, resume-trigger APIs
Auto-scaling: New /autoscaling/history API to show past autoscaling actions and cluster events
New JSON based Query DSL for Solr that extends JSON Request API to also support all query parsers and their nested parameters
JSON Facet API: min/max aggregations are now supported on single-valued date fields
Lucene's Geo3D (surface of sphere & ellipsoid) is now supported on spatial RPT fields by setting spatialContextFactory="Geo3D". Furthermore, this is the first time Solr has out of the box support for polygons
Expanded support for statistical stream evaluators such as various distributions, rank correlations, distances and more.
Multiple other optimizations and bug fixes
PR: 223073
Submitted by: idefix@fechner.net (Maintainer)
Security: CVE-2017-12629
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