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Elasticsearch version 7.0.0-rc2

Also see Breaking changes in 7.0.0.

Deprecations

Analysis

Remove nGram and edgeNGram token filter names (#38911) #39070 (issues: #30209, #38911)

Graph

Deprecate types in _graph/explore calls. #40466

Enhancements

CCR

Introduce forget follower API #39718 (issue: #37165)

Cluster Coordination

Remove timeout task after completing cluster state publication #40411
Use default discovery implementation for single-node discovery #40036
Do not log unsuccessful join attempt each time #39756

Distributed

Allow retention lease operations under blocks #39089 (issues: #34648, #37165)
Remove retention leases when unfollowing #39088 (issues: #34648, #37165)
Introduce retention lease state file #39004 (issues: #37165, #38588, #39032)
Enable soft-deletes by default for 7.0+ indices #38929 (issue: #36141)

Engine

Also mmap cfs files for hybridfs #38940 (issue: #36668)

Infra/Core

Enhancements to IndicesQueryCache. #39099 (issue: #37117)

Infra/Packaging

Add no-jdk distributions #39882

Machine Learning

[ML] Allow stop unassigned datafeed and relax unset upgrade mode wait #39034

Mapping

Introduce a parameter suppress_types_warnings. #38923

Recovery

Do not wait for advancement of checkpoint in recovery #39006 (issues: #38949, #39000)

SQL

SQL: add "fuzziness" option to QUERY and MATCH function predicates #40529 (issue: #40495)
SQL: add "validate.properties" property to JDBC’s allowed list of settings #39050 (issue: #38068)

Search

Avoid BytesRef’s copying in ScriptDocValues’s Strings #29581 (issue: #29567)

Security

Types removal security index template #39705 (issue: #38637)
Types removal security index template #39542 (issue: #38637)

Snapshot/Restore

Mark Deleted Snapshot Directories with Tombstones #40228 (issue: #39852)

Store

Add option to force load term dict into memory #39741

Features/Monitoring

Remove types from internal monitoring templates and bump to api 7 #39888 (issue: #38637)

Features/Watcher

Remove the index type from internal watcher indexes #39761 (issue: #38637)

Infra/Core

Change zone formatting for all printers #39568 (issue: #38471)

Bug fixes

Analysis

Fix PreConfiguredTokenFilters getSynonymFilter() implementations #38839 (issue: #38793)

Audit

LoggingAuditTrail correctly handle ReplicatedWriteRequest #39925 (issue: #39555)

Authentication

Correct authenticate response for API key #39684
Fix security index auto-create and state recovery race #39582

CCR

Fix shard follow task startup error handling #39053 (issue: #38779)
Filter out upgraded version index settings when starting index following #38838 (issue: #38835)

CRUD

Store Pending Deletions Fix #40345 (issue: #40249)
ShardBulkAction ignore primary response on primary #38901

Cluster Coordination

Do not perform cleanup if Manifest write fails with dirty exception #40519 (issue: #39077)
Cache compressed cluster state size #39827 (issue: #39806)
Drop node if asymmetrically partitioned from master #39598
Fixing the custom object serialization bug in diffable utils. #39544
Clean GatewayAllocator when stepping down as master #38885

Distributed

Enforce retention leases require soft deletes #39922 (issue: #39914)
Treat TransportService stopped error as node is closing #39800 (issue: #39584)
Use cause to determine if node with primary is closing #39723 (issue: #39584)
Don’t ack if unable to remove failing replica #39584 (issue: #39467)
Fix NPE on Stale Index in IndicesService #38891 (issue: #38845)

Engine

Advance max_seq_no before add operation to Lucene #38879 (issue: #31629)

Features/Features

Deprecation check for indices with very large numbers of fields #39869 (issue: #39851)

Features/ILM

Correct ILM metadata minimum compatibility version #40569 (issue: #40565)
Handle null retention leases in WaitForNoFollowersStep #40477

Features/Ingest

Ingest ingest then create index #39607 (issues: #32758, #32786, #36545)

Features/Monitoring

Don’t emit deprecation warnings on calls to the monitoring bulk API. #39805 (issue: #39336)

Features/Watcher

Fix Watcher stats class cast exception #39821 (issue: #39780)
Use any index specified by .watches for Watcher #39541 (issue: #39478)
Resolve concurrency with watcher trigger service #39092 (issue: #39087)

Geo

Geo Point parse error fix #40447 (issue: #17617)

Highlighting

Bug fix for AnnotatedTextHighlighter - port of 39525 #39750 (issue: #39525)

Infra/Core

Allow single digit milliseconds in strict date parsing #40676 (issue: #40403)
Parse composite patterns using ClassicFormat.parseObject #40100 (issue: #39916)
Bat scripts to work with JAVA_HOME with parantheses #39712 (issues: #30606, #33405, #38578, #38624)
Change licence expiration date pattern #39681 (issue: #39136)
Fix DateFormatters.parseMillis when no timezone is given #39100 (issue: #39067)
Don’t close caches while there might still be in-flight requests. #38958 (issue: #37117)

Infra/Packaging

Use TAR instead of DOCKER build type before 6.7.0 #40723 (issues: #39378, #40511)

Infra/REST API

Update spec files that erroneously documented parts as optional #39122
ilm.explain_lifecycle documents human again #39113
Index on rollup.rollup_search.json is a list #39097

MULTIPLE AREA LABELS

metric on watcher stats is a list not an enum #39114

Machine Learning

[ML] Fix datafeed skipping first bucket after lookback when aggs are … #39859 (issue: #39842)
[ML] refactoring lazy query and agg parsing #39776 (issue: #39528)
[ML] Stop the ML memory tracker before closing node #39111 (issue: #37117)

Mapping

Optimise rejection of out-of-range long values #40325 (issues: #26137, #40323)

Recovery

Recover peers from translog, ignoring soft deletes #38904 (issue: #37165)
Retain history for peer recovery using leases #38855

Rollup

Remove timezone validation on rollup range queries #40647

SQL

SQL: Fix display size for DATE/DATETIME #40669
SQL: have LIKE/RLIKE use wildcard and regexp queries #40628 (issue: #40557)
SQL: Fix getTime() methods in JDBC #40484
SQL: SYS TABLES: enumerate tables of requested types #40535 (issue: #40348)
SQL: passing an input to the CLI "freezes" the CLI after displaying an error message #40164 (issue: #40557)
SQL: Wrap ZonedDateTime parameters inside scripts #39911 (issue: #39877)
SQL: ConstantProcessor can now handle NamedWriteable #39876 (issue: #39875)
SQL: Extend the multi dot field notation extraction to lists of values #39823 (issue: #39738)
SQL: values in datetime script aggs should be treated as long #39773 (issue: #37042)
SQL: Don’t allow inexact fields for MIN/MAX #39563 (issue: #39427)
SQL: Fix merging of incompatible multi-fields #39560 (issue: #39547)
SQL: fix COUNT DISTINCT column name #39537 (issue: #39511)
SQL: Enable accurate hit tracking on demand #39527 (issue: #37971)
SQL: ignore UNSUPPORTED fields for JDBC and ODBC modes in SYS COLUMNS #39518 (issue: #39471)
SQL: enforce JDBC driver - ES server version parity #38972 (issue: #38775)
SQL: fall back to using the field name for column label #38842 (issue: #38831)

Search

Fix Fuzziness#asDistance(String) #39643 (issue: #39614)

Security

Remove dynamic objects from security index #40499 (issue: #35460)
Fix libs:ssl-config project setup #39074
Do not create the missing index when invoking getRole #39039

Snapshot/Restore

Blob store compression fix #39073

Upgrades

Snapshot/Restore

plugins/repository-gcs: Update google-cloud-storage/core to 1.59.0 #39748 (issue: #39366)

Search

Upgrade to Lucene 8.0.0 GA #39992 (issue: #39640)

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https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.0.0-rc2.html