LUCENE-5434: drop the merged reader if the merge was aborted, before trying to delete its files

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566012 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5624: Enable QueryResultCache for CollapsingQParserPlugin

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566122 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5700: Improve error handling of remote queries (proxied requests).

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566176 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5700: Always consumes the response's HttpEntity and cleaned up the test a little.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566180 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5695: Add support for Lucene's BlendedInfixSuggester

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566223 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5476 avoiding race condition 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566248 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5624: Guard against NPE during cache warming

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566312 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5710: Migrate collection command does not handle not finding a shard leader well

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SOLR-5695: Make best effort to clean up suggester index

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566389 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5585: Raise Collections API timeout to 3 minutes from one minute.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566486 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5608: Add short poll to test.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566493 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5704: new cores should be created under coreRootDirectory

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566600 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5476 added testcase

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566624 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5440: Add LongBitSet to handle large number of bits; replace usage of OpenBitSet by FixedBitSet/LongBitSet

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566670 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5652: in cursor tests, don't sort on 'plain' docvalue fields (i.e., those using standard Lucene sorting for missing values) when the codec doesn't support missing docvalues. (merged trunk r1566741)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566742 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5709: Highlighting grouped duplicate docs from different shards with group.limit > 1 throws ArrayIndexOutOfBoundsException (merged trunk r1566743)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566746 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5536: Added a proper ValueSource context

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566844 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5561: Fix implicit DefaultSimilarityFactory initialization in IndexSchema to properly specify discountOverlap option (merge r1566842)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566871 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5709: add missing license (merged trunk r1566914)

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1566918 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5689: On reconnect, ZkController cancels election on first context rather than latest

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1567050 13f79535-47bb-0310-9956-ffa450edef68