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6.0.0-alpha2 Release Notes

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6.0.0-alpha2 Release Notes

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Also see Breaking changes in 6.0.

Breaking changes

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CRUD

Deleting a document from a non-existing index creates the indexIf the index does not exist, delete document will not auto create it #24518 (issue: #15425)

Plugin Analysis ICU

Upgrade icu4j to latest version #24821

Plugin Repository S3

Remove deprecated S3 settings #24445

Scripting

Remove script access to term statistics #19462 (issue: #19359)

Breaking Java changes

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Aggregations

Make Terms.Bucket an interface rather than an abstract class #24492
Compound order for histogram aggregations #22343 (issues: #14771, #20003, #23613)

Plugins

Drop name from TokenizerFactory #24869

Deprecations

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Settings

Deprecate settings in .yml and .json #24059 (issue: #19391)

New features

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Aggregations

SignificantText aggregation - like significant_terms, but for text #24432 (issue: #23674)

Internal

Automatically adjust search threadpool queue_size #23884 (issue: #3890)

Mapping

Add new ip_range field type #24433

Plugin Analysis ICU

Add ICUCollationFieldMapper #24126

Enhancements

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Core

Improve bootstrap checks error messages #24548

Engine

Move the IndexDeletionPolicy to be engine internal #24930 (issue: #10708)

Internal

Add assertions enabled helper #24834

Java High Level REST Client

Add doc_count to ParsedMatrixStats #24952 (issue: #24776)
Add fromXContent method to ClearScrollResponse #24909
ClearScrollRequest to implement ToXContentObject #24907
SearchScrollRequest to implement ToXContentObject #24906 (issue: #3889)
Add aggs parsers for high level REST Client #24824 (issues: #23965, #23973, #23974, #24085, #24160, #24162, #24182, #24183, #24208, #24213, #24239, #24284, #24312, #24330, #24365, #24371, #24442, #24521, #24524, #24564, #24583, #24589, #24648, #24667, #24675, #24682, #24700, #24706, #24717, #24720, #24738, #24746, #24789, #24791, #24794, #24796, #24822)

Mapping

Identify documents by their _id. #24460

Packaging

Set number of processes in systemd unit file #24970 (issue: #20874)

Plugin Lang Painless

Make Painless Compiler Use an Instance Per Context #24972
Make PainlessScript An Interface #24966

Recovery

Introduce primary context #25031 (issue: #10708)

Scripting

Add StatefulFactoryType as optional intermediate factory in script contexts #24974 (issue: #20426)
Make contexts available to ScriptEngine construction #24896
Make ScriptEngine.compile generic on the script context #24873
Add instance and compiled classes to script contexts #24868

Search

Eliminate array access in tight loops when profiling is enabled. #24959
Support Multiple Inner Hits on a Field Collapse Request #24517
Expand cross-cluster search indices for search requests to the concrete index or to it’s aliases #24502

Search Templates

Add max concurrent searches to multi template search #24255 (issues: #20912, #21907)

Sequence IDs

Fill gaps on primary promotion #24945 (issue: #10708)
Introduce clean transition on primary promotion #24925 (issue: #10708)
Guarantee that translog generations are seqNo conflict free #24825 (issues: #10708, #24779)
Inline global checkpoints #24513 (issue: #10708)

Snapshot/Restore

Enhances get snapshots API to allow retrieving repository index only #24477 (issue: #24288)

Bug fixes

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Aggregations

Terms aggregation should remap global ordinal buckets when a sub-aggregator is used to sort the terms #24941 (issue: #24788)
Correctly set doc_count when MovAvg "predicts" values on existing buckets #24892 (issue: #24327)
DateHistogram: Fix extended_bounds with offset #23789 (issue: #23776)
Fix ArrayIndexOutOfBoundsException when no ranges are specified in the query #23241 (issue: #22881)

Analysis

PatternAnalyzer should lowercase wildcard queries when lowercase is true. #24967

Cache

fix bug of weight computation #24856

Core

Fix cache expire after access #24546

Index APIs

Validates updated settings on closed indices #24487 (issue: #23787)

Ingest

Fix floating-point error when DateProcessor parses UNIX #24947
add option for _ingest.timestamp to use new ZonedDateTime (5.x backport) #24030 (issues: #23168, #23174)

Inner Hits

Fix Source filtering in new field collapsing feature #24068 (issue: #24063)

Internal

Ensure remote cluster is connected before fetching _field_caps #24845 (issue: #24763)

Network

Fix error message if an incompatible node connects #24884

Plugins

Fix plugin installation permissions #24527 (issue: #24480)

Scroll

Fix single shard scroll within a cluster with nodes in version >= 5.3 and <= 5.3 #24512

Search

Fix script field sort returning Double.MAX_VALUE for all documents #24942 (issue: #24940)
Compute the took time of the query after the expand phase of field collapsing #24902 (issue: #24900)

Sequence IDs

Handle primary failure handling replica response #24926 (issue: #24935)

Snapshot/Restore

Fix inefficient (worst case exponential) loading of snapshot repository #24510 (issue: #24509)

Stats

Avoid double decrement on current query counter #24922 (issues: #22996, #24872)
Adjust available and free bytes to be non-negative on huge FSes #24911 (issues: #23093, #24453)

Suggesters

Fix context suggester to read values from keyword type field #24200 (issue: #24129)

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