Elasticsearch 6.5.0 已发布，Elasticsearch 是一个分布式的 RESTful 风格的搜索和数据分析引擎，能够解决不断涌现出的各种用例。作为 Elastic Stack 的核心，它集中存储你的数据，帮助你发现意料之中以及意料之外的情况。

Breaking changes

Aggregations

• Require combine and reduce scripts in scripted metrics aggregation #33452 (issue: #32804)

Geo

• Geo: Don’t flip longitude of envelopes crossing dateline #34535 (issue: #34418)

Mapping

• Disallow "enabled" attribute change for types in mapping update (#33566) #33933

Plugins

• Introduce index store plugins #32375 (issue: #32267)

Breaking Java changes

Authorization

• Use RoleRetrievalResult for better caching #34197 (issue: #33205)

Core

• Use generic AcknowledgedResponse instead of extended classes #32859

• Switch WritePipelineResponse to AcknowledgedResponse #32722

Java High Level REST Client

• HLRC XPack Protocol clean up: Licence, Misc #34469 (issue: #34451)

Plugins

• Fix generics in ScriptPlugin#getContexts() #33426

Deprecations

Analysis

• Deprecates the standard filter #33468

Scripting

• Scripting: Conditionally use java time api in scripting #31441

Search

• Deprecate negative query boost (#34486) #34512 (issues: #33309, #34486)

• Deprecate negative weight in Function Score Query #33624 (issue: #31927)

Suggesters

• Make Geo Context Mapping Parsing More Strict (6.x version) #32862 (issue: #32821)

New features

Aggregations

• Adds a new auto-interval date histogram #28993 (issue: #9572)

Analysis

• Add script_filter tokenfilter #33431

• Add conditional token filter to elasticsearch #31958

Audit

• Backport Structured Audit Logging #33894 (issue: #31046)

• Structured audit logging #31931 (issue: #31046)

Authentication

• Allow User/Password realms to disable authc #34033 (issue: #33292)

Authorization

• [X-Pack] Beats centralized management: security role + licensing #34305 (issues: #30493, #30520)

• Add get-user-privileges API #33928 (issue: #32777)

• Add support for "authorization_realms" #33262

CCR

• [CCR] Added auto follow patterns feature #33118 (issue: #33007)

Index APIs

• Add an index setting to control TieredMergePolicy#deletesPctAllowed #32907

Java High Level REST Client

• add start trial API to HLRC #32799

Machine Learning

• [ML] Label anomalies with multi_bucket_impact #34233

• [ML] Add a file structure determination endpoint #33471

• [ML] Partition-wise maximum scores #32748

Mapping

• New Annotated_text field type #30364 (issue: #29467)

Monitoring

• APM server monitoring #32515

SQL

• SQL: Implement CONVERT, an alternative to CAST #34660 (issue: #34513)

• SQL: Implement IN(value1, value2, …) expression. #34581 (issue: #32955)

• SQL: TRUNCATE and ROUND functions #33779 (issue: #33494)

• SQL: Adds MONTHNAME, DAYNAME and QUARTER functions #33411 (issue: #33092)

Search

• Add max_children limit to nested sort #33587 (issue: #33592)

Enhancements

Aggregations

• Rollup adding support for date field metrics (#34185) #34200 (issue: #34185)

• Add early termination support for min/max aggregations #33375

• Add early termination support to BucketCollector #33279

• Add interval response parameter to AutoDateInterval histogram #33254

• Scripted metric aggregations: add deprecation warning and system property to control legacy params #31597 (issues: #29328, #30111)

Allocation

• Skip rebalancing when cluster_concurrent_rebalance threshold reached #33329 (issue: #27628)

Analysis

• Allow TokenFilterFactories to rewrite themselves against their preceding chain #33702 (issue: #33609)

Audit

• Add opaque_id to index audit logging #32260 (issue: #31521)

Authentication

• Security: reduce memory usage of DnRoleMapper #34250 (issue: #34237)

• Security: upgrade unboundid ldapsdk to 4.0.8 #34247 (issue: #33175)

• [Kerberos] Add realm name & UPN to user metadata #33338

• [SECURITY] Set Auth-scheme preference #33156 (issue: #32699)

• Token API supports the client_credentials grant #33106

Authorization

• [Authz] Allow update settings action for system user #34030 (issue: #33119)

• Calculate changed roles on roles.yml reload #33525 (issue: #33205)

• [Kerberos] Add authorization realms support to Kerberos realm #32392

• [X-Pack] Beats centralized management: security role + licensing #30520 (issue: #30493)

Beats Plugin

• [Monitoring] Update beats template to include apm-server metrics #33286

CRUD

• Verify primary mode usage with assertions #32667 (issues: #10708, #25692, #32442)

• Refactor TransportShardBulkAction to better support retries #31821

Circuit Breakers

• Whitelisting / from Circuit Breaker Exception (#32325) #32666

Core

• Improved IndexNotFoundException’s default error message #34649 (issue: #34628)

• Prevent cause from being null in ShardOperationFailedException #32640 (issue: #32608)

• Enable avoiding mmap bootstrap check #32421 (issue: #32267)

Discovery-Plugins

• [GCE Discovery] Automatically set project-id and zone #33721 (issue: #13618)

Distributed

• Add contains method to LocalCheckpointTracker #33871 (issue: #33656)

• Introduce global checkpoint listeners #32696 (issue: #32651)

• Expose whether or not the global checkpoint updated #32659 (issue: #32651)

• Include translog path in error message when translog is corrupted #32251 (issue: #24929)

Docs Infrastructure

• Docs: Allow snippets to have line continuation #32649

Engine

• Do not alloc full buffer for small change requests #35158

• Fill LocalCheckpointTracker with Lucene commit #34474 (issues: #0, #2, #33656)

• Lock down Engine.Searcher #34363 (issue: #34357)

• Fold EngineSearcher into Engine.Searcher #34082

• Build DocStats from SegmentInfos in ReadOnlyEngine #34079 (issue: #33903)

• Move CompletionStats into the Engine #33847 (issue: #33835)

• Move DocsStats into Engine #33835

• Add read-only Engine #33563 (issues: #32844, #32867)

• Allow engine to recover from translog upto a seqno #33032 (issue: #32867)

Index APIs

• Introduce index settings version #34429

• Add cluster-wide shard limit warnings #34021 (issues: #20705, #32856)

• Copy and validate soft-deletes setting on resize #33517 (issue: #33321)

• Introduce mapping version to index metadata #33147

• update rollover to leverage write-alias semantics #32216

Ingest

• ingest: processor stats #34724 (issue: #34202)

• ingest: better support for conditionals with simulate?verbose #34155

• ingest: correctly measure chained pipeline stats #33912

• ingest: support simulate with verbose for pipeline processor #33839

• [ingest] geo-ip performance improvements #33029

• ingest: Introduce the dissect processor #32884

• INGEST: Add Pipeline Processor #32473 (issue: #31842)

• Ingest: Add conditional per processor #32398 (issue: #21248)

• Introduce the dissect library #32297

• INGEST: Enable default pipelines #32286 (issue: #21101)

• INGEST: Implement Drop Processor #32278 (issue: #23726)

• Ingest: Support integer and long hex values in convert #32213 (issue: #32182)

• Add region ISO code to GeoIP Ingest plugin #31669

Java High Level REST Client

• HLRC: Delete role API #34620

• [HLRC] Add support for Delete role mapping API #34531

• [HLRC] Add Start/Stop Watch Service APIs. #34317

• HLRC: ML Add preview datafeed api #34284 (issue: #29827)

• HLRC: ML Adding get datafeed stats API #34271 (issue: #29827)

• HLRC: Deactivate Watch API #34192 (issues: #29827, #33988)

• Create/Update role mapping API #34171 (issue: #33745)

• HLRC: Get SSL Certificates API #34135

• [ML][HLRC] Replace REST-based ML test cleanup with the ML client #34109

• HLRC: Add activate watch action #33988 (issue: #29827)

• Add support for ack watch to the HLRC. #33962 (issue: #29827)

• HLRC: Add throttling for update & delete-by-query #33951

• HLRC: ML Stop datafeed API #33946 (issue: #29827)

• HLRC: Add get rollup job #33921

• HLRC: ML start data feed API #33898 (issue: #29827)

• HLRC: Add support for reindex rethrottling #33832

• HLRC: Reindex should support requests_per_seconds parameter #33808

• HLRC: Delete ML calendar #33775 (issue: #29827)

• HLRC: Get ML calendars #33760 (issue: #29827)

• [HLRC] Support for role mapper expression dsl #33745

• [HLRC][ML] Add ML get datafeed API to HLRC #33715 (issue: #29827)

• REST client: introduce a strict deprecation mode #33708 (issue: #33534)

• [HLRC][ML] Add ML delete datafeed API to HLRC #33667 (issue: #29827)

• HLRC: Add support for XPack Post Start Basic Licence API #33606 (issue: #29827)

• [HLRC][ML] Add ML put datafeed API to HLRC #33603 (issue: #29827)

• Create a WatchStatus class for the high-level REST client. #33527

• HLRC: ML Delete Forecast API #33526 (issue: #29827)

• Add create rollup job api to high level rest client #33521 (issues: #29827, #32703)

• HLRC: add change password API support #33509 (issue: #33481)

• HLRC: ML Forecast Job #33506 (issue: #29827)

• HLRC: add enable and disable user API support #33481 (issue: #29827)

• HLRC: Add ML get categories API #33465 (issue: #29827)

• HLRC: ML Post Data #33443 (issue: #29827)

• add start trial API to HLRC #33406

• HLRC: ML Update Job #33392 (issue: #29827)

• HLRC: Add ML get influencers API #33389 (issue: #29827)

• HLRC: ML PUT Calendar #33362 (issue: #29827)

• HLRC: Add ML get overall buckets API #33297 (issue: #29827)

• HLRC: create base timed request class #33216

• HLRC: add client side RefreshPolicy #33209

• HLRC: ML Flush job #33187 (issue: #29827)

• HLRC: Adding ML Job stats #33183 (issue: #29827)

• HLRC: Use Optional in validation logic #33104

• HLRC: Add ML Get Records API #33085 (issue: #29827)

• HLRC: Add ML Get Buckets API #33056 (issue: #29827)

• GraphClient for the high level REST client and associated tests. #33025 (issue: #29827)

• HLRC: Clear ML data after client tests #33023 (issue: #32993)

• HLRC: Add ML Get Job #32960 (issue: #29827)

• HLRC: ML Close Job #32943 (issue: #29827)

• HLRC: Create server agnostic request and response #32912

• Add GetRollupCaps API to high level rest client #32880 (issues: #29827, #32703)

• HLRC: adding machine learning open job #32860 (issue: #29827)

• HLRC: Refactor WatchStatus #32842 (issue: #29827)

• HLRC: adding machine learning delete job #32820 (issue: #29827)

• HLRC: Refactor WatchStatus and implement activate watch #32802 (issue: #29827)

• REST high-level client: add delete by query API #32782 (issues: #27205, #32679, #32760)

• REST high-level client: add update by query API #32760 (issues: #27205, #32679)

• HLRC: migration get assistance API #32744 (issue: #29827)

• Adding ML HLRC wrapper and put_job API call #32726

• Add create rollup job api to high level rest client #32703 (issue: #29827)

• REST high-level client: add reindex API #32679 (issue: #27205)

• HLRC: Add Delete License API #32586 (issue: #29827)

• Rest HL client: Add get license action #32438 (issue: #29827)

• HLRC: Add delete watch action #32337 (issue: #29827)

• HLRest: add xpack put user API #32332 (issue: #29827)

• Rest HL client: Add put license action #32214 (issue: #29827)

• Add Restore Snapshot High Level REST API #32155 (issue: #27205)

• Add put stored script support to high-level rest client #31323 (issue: #27205)

Logging

• Logging: Make node name consistent in logger #31588

Machine Learning

• ML: Adding support for lazy nodes (#29991) #34538 (issue: #29991)

• [ML] Add an ingest pipeline definition to structure finder #34350

• [ML] Add a timeout option to file structure finder #34117

• [ML] Allow asynchronous job deletion #34058 (issue: #32836)

• Make certain ML node settings dynamic (#33565) #33961 (issue: #33565)

• [ML] Display integers without .0 in file structure field stats #33947

• [ML] Return both Joda and Java formats from structure finder #33900

• Adding node_count to ML Usage (#33850) #33863 (issue: #33850)

• Delete custom index if the only contained job is deleted #33788 (issue: #30075)

• [ML] Allow overrides for some file structure detection decisions #33630

• [ML] Minor improvements to categorization Grok pattern creation #33353

• [ML] Delete forecast API (#31134) #33218 (issue: #31134)

Mapping

• Preserve the order of nested documents in the Lucene index #34225 (issue: #33587)

• Don’t count metadata fields towards index.mapping.total_fields.limit #33386 (issue: #24096)

• Add expected mapping type to MapperException #31564 (issue: #31502)

Monitoring

• [Monitoring] Add additional necessary mappings for apm-server #34392

• Adding stack_monitoring_agent role #34369

• [Monitoring] Add cluster metadata to cluster_stats docs #33860 (issue: #33691)

• Implement xpack.monitoring.elasticsearch.collection.enabled setting #33474 (issue: #33290)

Network

• Pass the host name on as server_name if proxy mode is on #34559

• Bad regex in CORS settings should throw a nicer error #34035

• Add sni name to SSLEngine in netty transport (#33144) #33513 (issue: #32517)

• Add sni name to SSLEngine in netty transport #33144 (issue: #32517)

• Add proxy support to RemoteClusterConnection #33062 (issues: #31840, #32517)

• Use a dedicated ConnectionManger for RemoteClusterConnection #32988 (issue: #31835)

Packaging

• Add Ubuntu 18.04 to packaging tests #34139

Ranking

• Add minimal sanity checks to custom/scripted similarities. (backport) #33893 (issue: #33564)

• Use the global doc id to generate random scores #33599

Recovery

• Use soft-deleted docs to resolve strategy for engine operation #35230 (issues: #0, #1, #33656, #34474)

• Propagate auto_id_timestamp in primary-replica resync #33964 (issue: #33693)

• Restore local history from translog on promotion #33616 (issues: #32867, #33473)

• Reset replica engine to global checkpoint on promotion #33473 (issue: #32867)

• Bootstrap a new history_uuid when force allocating a stale primary #33432 (issue: #26712)

• Integrates soft-deletes into Elasticsearch #33222 (issues: #29530, #30086, #30120, #30335, #30522, #31106)

Rollup

• [Rollup] Add support for date histo format when searching #34537 (issue: #34391)

• [Rollup] Only allow aggregating on multiples of configured interval #32052

SQL

• SQL: Improve CircuitBreaker logic for SqlParser #35300 (issue: #35299)

• SQL: Optimizer rule for folding nullable expressions #35080 (issue: #34826)

• SQL: Improve painless script generated from IN #35055 (issue: #34750)

• SQL: Implement CAST between STRING and IP #34949 (issue: #34799)

• SQL: Fix function args verification and error msgs #34926 (issues: #33469, #34752)

• SQL: Introduce ODBC mode, similar to JDBC #34825 (issue: #34720)

• SQL: Introduce support for IP fields #34758 (issue: #32499)

• SQL: Implement null handling for IN(v1, v2, ...) #34750 (issue: #34582)

• SQL: handle X-Pack or X-Pack SQL not being available in a more graceful way #34736 (issue: #30009)

• SQL: Support pattern against compatible indices #34718 (issues: #31611, #31837, #33803)

• SQL: Allow min/max aggregates on date fields #34699 (issue: #34477)

• SQL: Introduce support for NULL values (#34573) #34640 (issue: #32079)

• SQL: return constants for all matching records in constants-containing SELECTs #34576 (issue: #31863)

• SQL: Functions enhancements (OCTET_LENGTH function, order functions alphabetically, RANDOM function docs) #34101 (issue: #33477)

• SQL: Internal refactoring of operators as functions #34097 (issue: #33975)

• SQL: Remove more ANTLR4 grammar ambiguities #34074 (issue: #33854)

• SQL: Move away internally from JDBCType to SQLType #33913 (issue: #33904)

• SQL: Fix ANTL4 Grammar ambiguities. #33854 (issue: #31885)

• SQL: Better handling of number parsing exceptions #33776 (issue: #33622)

• SQL: Grammar tweak for number declarations #33767 (issue: #33765)

• SQL: Return functions in JDBC driver metadata #33672 (issue: #33671)

• SQL: Make Literal a NamedExpression #33583 (issue: #33523)

• SQL: Improve alias vs index resolution #33393 (issue: #33363)

• SQL: Align SYS TABLE for ODBC SQL_ALL_* args #33364 (issue: #33312)

• SQL: Show/desc commands now support table ids #33363 (issue: #33294)

• SQL: Support multi-index format as table identifier #33278

• SQL: Multiple indices pattern #33162

• SQL: skip uppercasing/lowercasing function tests for AZ locales as well #32910 (issue: #32589)

• SQL: test coverage for JdbcResultSet #32813 (issue: #32078)

• SQL: Added support for string manipulating functions with more than one parameter #32356(issue: #31604)

Scripting

• Painless: Add Static Methods Shortcut #33440

• Painless: Add Bindings #33042

Search

• Replace version with reader cache key in IndicesRequestCache #34189 (issues: #27650, #33473)

• Handle terms query when detecting if a query can match nested docs #34072 (issue: #34067)

• Add a limit for graph phrase query expansion #34031

• Clarify RemoteClusterService#groupIndices behaviour #33899

• Add nested and object fields to field capabilities response #33803 (issue: #33237)

• Introduce a search_throttled threadpool #33732

• Upgrade remote cluster settings #33537 (issues: #33413, #33536)

• Remove unsupported group_shard_failures parameter #33208 (issue: #32598)

• Profiler: Don’t profile NEXTDOC for ConstantScoreQuery. #33196 (issue: #23430)

• Change query field expansion #33020 (issues: #31655, #31798)

• Expose max_concurrent_shard_requests in _msearch #33016 (issue: #31877)

• Search: Support of wildcard on docvalue_fields #32980 (issues: #26299, #26390)

• Ignore script fields when size is 0 #31917 (issue: #31824)

Security

• Generate non-encrypted license public key #34626

• Security: don’t call prepare index for reads #34568 (issues: #33205, #34246)

• Enable security automaton caching #34028

• Add Debug/Trace logging to token service #34022

• Security index expands to a single replica #33131 (issues: #29712, #29933)

• Introduce fips_mode setting and associated checks #32326

Settings

• Introduce private settings #33327 (issue: #31286)

• Add user-defined cluster metadata #33325 (issue: #33220)

• Add settings updater for 2 affix settings #33050

Snapshot/Restore

• Use more precise does S3 bucket exist method #34123

• Add _source-only snapshot repository #32844

• Increase max chunk size to 256Mb for repo-azure #32101 (issue: #12448)

• Update AWS SDK to 1.11.340 in repository-s3 #30723 (issues: #22758, #25552, #30474)

Stats

• Add cluster UUID to Cluster Stats API response #32206 (issue: #32205)

Store

• add elasticsearch-shard tool to 6.x #33848 (issue: #31389)

• drop index.shard.check_on_startup: fix #32279 (issue: #31389)

Suggesters

• Completion types with multi-fields support #34081 (issue: #15115)

Watcher

• Watcher: Reduce script cache churn by checking for mustache tags #33978 (issue: #29280)

• [Watcher] Improved error messages for CronEvalTool #32800 (issue: #32735)

• Watcher: Use Bulkprocessor in HistoryStore/TriggeredWatchStore #32490

• Watcher: migrate PagerDuty v1 events API to v2 API #32285 (issue: #32243)

ZenDiscovery

• Allow excluding folder names when scanning for dangling indices #34349

Bug fixes

Aggregations

• Fix handling of empty keyword in terms aggregation #34457 (issue: #34434)

• Check self references in metric agg after last doc collection (#33593) #34001

• Unmapped aggs should not run pipelines if they delegate reduction #33528 (issue: #33514)

• For filters aggregations, make sure that rewrites preserve other_bucket. #32921 (issue: #32834)

Allocation

• DiskThresholdDecider#canAllocate can report negative free bytes #33641 (issue: #33596)

• Don’t omit default values when updating routing exclusions (#32721) #33638

Analysis

• Check stemmer language setting early #34601 (issue: #34170)

Authentication

• ListenableFuture should preserve ThreadContext #34394

• Allow an AuthenticationResult to return metadata #34382 (issues: #34290, #34332)

• Preserve thread context during authentication #34290

• [Kerberos] Add debug log statement for exceptions #32663

• [Kerberos] Remove Kerberos bootstrap checks #32451

Authorization

• Handle missing user in user privilege APIs #34575 (issue: #34567)

• Allow query caching by default again #33328 (issue: #33191)

• Fix role query that can match nested documents #32705

• Make get all app privs requires "*" permission #32460

CAT APIs

• Fix potential NPE in _cat/shards/ with partial CommonStats #33858

• Cat apis: Fix index creation time to use strict date format #32510 (issue: #32466)

CRUD

• Fix DeleteRequest validation for nullable or empty id/type #35314 (issue: #35297)

• Fix NOOP bulk updates #32819 (issues: #31821, #32808)

Circuit Breakers

• Make accounting circuit breaker settings dynamic #34372 (issue: #34368)

Core

• Fix AutoQueueAdjustingExecutorBuilder settings validation #33922

• Fix Javadoc issues in 6.x for JDK11 #33579

• Core: Add java time xcontent serializers #33120 (issue: #31853)

• Protect scheduler engine against throwing listeners #32998

• Fix content type detection with leading whitespace #32632 (issue: #32357)

Distributed

• Only notify ready global checkpoint listeners #33690

• Enable global checkpoint listeners to timeout #33620 (issue: #32696)

• Fix race between replica reset and primary promotion #32442 (issues: #32118, #32304, #32431)

Engine

• Acquire seacher on closing engine should throw AlreadyClosedException #33331 (issue: #33330)

• Trim unreferenced translog when the safe commit advanced #32967 (issues: #28140, #32089)

• All Translog inner closes should happen after tragedy exception is set #32674 (issue: #32526)

Geo

• Fix north pole overflow error in GeoHashUtils.bbox() #32891 (issue: #32857)

• Use the determinant formula for calculating the orientation of a polygon #27967

Index APIs

• Make XContentBuilder in AliasActions build is_write_index field #35071

• Do not update number of replicas on no indices #34481

• [Security] Get Alias API wildcard exclusion with Security #34144 (issues: #33518, #33805)

• Allow to clear the fielddata cache per field #33807 (issue: #33798)

• CORE: Make Pattern Exclusion Work with Aliases #33518 (issue: #33395)

• Fix IndexMetaData loads after rollover #33394 (issue: #33316)

• Copy missing segment attributes in getSegmentInfo #32396

Ingest

• INGEST: Create Index Before Pipeline Execute #32786 (issue: #32758)

Java High Level REST Client

• HLRC: Fixing bug when getting a missing pipeline #34286 (issue: #34119)

• Aggregations/HL Rest client fix: missing scores #32774 (issue: #32770)

• HLRC: Ban LoggingDeprecationHandler #32756 (issue: #32151)

• HLRC: Move commercial clients from XPackClient #32596

• High-level client: fix clusterAlias parsing in SearchHit #32465

• REST high-level client: parse back _ignored meta field #32362

License

• Address license state update/read thread safety #33396

Logging

• Logging: Configure the node name when we have it #32983 (issue: #32793)

Machine Learning

• [ML] Prevent notifications being created on deletion of a non existent job #35337 (issues: #34058, #35336)

• [ML] Prevent default job values overwriting nulled fields #34804

• Handle pre-6.x time fields #34373

• [ML] Get job stats request should filter non-ML job tasks #33516 (issue: #33515)

• [ML] Prevent NPE parsing the stop datafeed request. #33347

• [ML] fix updating opened jobs scheduled events (#31651) #32881 (issue: #31651)

• Clear Job#finished_time when it is opened (#32605) #32755

• [ML] Fix thread leak when waiting for job flush (#32196) #32541 (issue: #32196)

Mapping

• Fix field mapping updates with similarity #33634 (issue: #33611)

• Ensure that _exists queries on keyword fields use norms when they’re available. #33006

• Make sure that field collapsing supports field aliases. #32648 (issue: #32623)

• Improve the error message when an index is incompatible with field aliases. #32482

Monitoring

• Typo in x-pack template for thread_pool.management #34224

Network

• NETWORKING: Add SSL Handler before other Handlers #34636 (issue: #33998)

• Handle null SSLSessions during invalidation #34130 (issue: #32124)

• Support PKCS#11 tokens as keystores and truststores #34063 (issue: #11)

• Parse PEM Key files leniantly #33173 (issue: #33168)

• NETWORKING: http.publish_host Should Contain CNAME #32806 (issue: #22029)

• NETWORKING: Make RemoteClusterConn. Lazy Resolve DNS #32764 (issue: #28858)

• Release requests in cors handle #32410

• Release requests in cors handler #32364

Packaging

• Fix use of hostname in Windows service #34193

• Add temporary directory cleanup workarounds #32615 (issue: #31732)

Percolator

• Ignore date ranges containing now when pre-processing a percolator query #35160

REST API

• Core: Fix IndicesSegmentResponse.toXcontent() serialization #33414 (issue: #29120)

Recovery

• Resync fails to notify on unavaiable exceptions #33615 (issues: #31179, #33613)

• Ensure to generate identical NoOp for the same failure #33141 (issue: #32986)

Rollup

• [Rollup] Proactively resolve index patterns in RollupSearch endoint #34930 (issue: #34828)

• Address BWC bug due to default metrics in (#34764) #34810 (issue: #34764)

•  

• [Rollup] Fix Caps Comparator to handle calendar/fixed time #33336 (issue: #32052)

• [Rollup] Better error message when trying to set non-rollup index #32965

• [Rollup] Return empty response when aggs are missing #32796 (issue: #32256)

• [Rollup] Improve ID scheme for rollup documents #32558 (issue: #32372)

SQL

• SQL: Fix null handling for AND and OR in SELECT #35277 (issue: #35240)

• SQL: Handle null literal for AND and OR in WHERE #35236 (issue: #35088)

• SQL: Introduce NotEquals node to simplify expressions #35234 (issues: #35210, #35233)

• SQL: handle wildcard expansion on incorrect fields #35134 (issue: #35092)

• SQL: Fix null handling for IN ⇒ painless script #35124 (issues: #35108, #35122)

• SQL: Register missing processors #35121 (issue: #35119)

• SQL: Fix NPE thrown if HAVING filter evals to null #35108 (issue: #35107)

• SQL: Proper handling of nested fields at the beginning of the columns list #35068 (issue: #32951)

• SQL: Fix incorrect AVG data type #34948 (issue: #33773)

• SQL: Add CAST and CONVERT to SHOW FUNCTIONS #34940 (issue: #34939)

• SQL: Handle aggregation for null group #34916 (issue: #34896)

• SQL: Provide null-safe scripts for Not and Neg #34877 (issue: #34848)

• SQL: Return error with ORDER BY on non-grouped. #34855 (issue: #34590)

• SQL: Fix queries with filter resulting in NO_MATCH #34812 (issue: #34613)

• SQL: Fix edge case: <field> IN (null) #34802 (issue: #34750)

• SQL: Verifier allows aliases aggregates for sorting #34773 (issue: #34607)

• SQL: the SSL default configuration shouldn&rsquo;t override the https protocol if used #34635 (issue: #33817)

• JDBC: Fix artifactId in pom #34478 (issue: #34399)

• SQL: Fix grammar for * in arithm expressions #34176 (issue: #33957)

• SQL: Fix function resolution #34137 (issue: #34114)

• SQL: Fix query translation of GroupBy with Having #34010 (issue: #33520)

• SQL: Prevent StackOverflowError when parsing large statements #33902 (issue: #32942)

• SQL: Fix issue with options for QUERY() and MATCH(). #33828 (issue: #32602)

• SQL: Return correct catalog separator in JDBC #33670 (issue: #33654)

• SQL: Fix result column names for CAST #33604 (issue: #33571)

• SQL: Fix result column names for arithmetic functions #33500 (issues: #14, #31869)

• SQL: Fix bug in REPLACE function. Adds more tests to all string functions #33478

• SQL: handle differently security connection related errors in the CLI #33255 (issue: #33230)

• SQL: prevent duplicate generation for repeated aggs #33252 (issue: #30287)

• SQL: Enable aggregations to create a separate bucket for missing values #32832 (issue: #32831)

• SQL: Bug fix for the optional "start" parameter usage inside LOCATE function #32576 (issue: #32554)

• SQL: Minor fix for javadoc #32573 (issue: #32553)

Scripting

• Scripting: Add back lookup vars in score script #34833

• Scripting: Add back params._source access in scripted metric aggs #34777 (issue: #33884)

• Test: Fix last reference to SearchScript #34731 (issue: #34683)

• Ensure map keys cannot be self referencing #34569

• [Painless] Add a Map for java names to classes for use in the custom classloader #34424

• [Painless] Allow statically imported methods without whitelisted class #34370

• Painless: Remove caching of Painless scripts #34116

• Painless: Fix Bindings Bug #33274

• Painless: Fix Semicolon Regression #33212 (issue: #33193)

• Scripting: Fix painless compiler loader to know about context classes #32385

Search

• Fix inner_hits retrieval when stored fields are disabled #34652 (issues: #32941, #33018)

• Fix cross fields mode of the query_string query #34216 (issue: #34215)

• Support string-style queries on metadata fields when reasonable. #34089 (issue: #34062)

• Improves doc values format deprecation message #33576 (issue: #33572)

• Fix nested _source retrieval with includes/excludes #33180 (issues: #33163, #33170)

• Fix quoted exists query #33019 (issue: #28922)

• Fix multi fields empty query #33017 (issue: #33009)

• XContentBuilder to handle BigInteger and BigDecimal #32888 (issue: #32395)

• Do NOT allow termvectors on nested fields #32728 (issues: #21625, #32652)

• Cross-cluster search: preserve cluster alias in shard failures #32608

Security

• Security: use x-pack config files when present #33688 (issue: #33464)

• Security: use default scroll keepalive #33639

• Enable FIPS140LicenseBootstrapCheck #32903 (issue: #32437)

Settings

• CORE: Validate Type for String Settings #33503 (issue: #33135)

• Fix deprecated setting specializations #33412

• Apply settings filter to get cluster settings API #33247

Snapshot/Restore

• Register Azure max_retries setting #35286

• Do not override named S3 client credentials #33793 (issue: #33769)

• Ensure fully deleted segments are accounted for correctly #33757 (issues: #32844, #33689, #33755)

Suggesters

• Fix completion suggester&rsquo;s score tie-break #34508 (issue: #34378)

• Null completion field should not throw IAE #33268

Transport API

• Fix serialization of empty field capabilities response #33263

Watcher

• watcher: Fix integration tests to ensure correct start/stop of Watcher #35271 (issues: #29877, #30705, #33291, #34448, #34462)

• Make Watcher validation message copy/pasteable #33497 (issue: #33369)

• Watcher: Reload properly on remote shard change #33167

• Watcher: Fix race condition when reloading watches #33157

• Guard against null in email admin watches #32923 (issue: #32590)

• Watcher: Properly find next valid date in cron expressions #32734

ZenDiscovery

• Fix logging of cluster state update descriptions #34182 (issue: #28941)

Regressions

Search

• Preserve index_uuid when creating QueryShardException #32677 (issue: #32608)

Upgrades

Core

• CORE: Upgrade to Jackson 2.8.11 #32670 (issue: #30352)

• Dependencies: Upgrade to joda time 2.10 #32160

Ingest

• Update geolite2 database in ingest geoip plugin #33840

Logging

• LOGGING: Upgrade to Log4J 2.11.1 (#32616) #32656 (issues: #27300, #32537)

• LOGGING: Upgrade to Log4J 2.11.1 #32616 (issues: #27300, #32537)

Network

• NETWORKING: Upgrade Netty to 4.1.30 #34417 (issue: #34411)

• NETWORKING: Upgrade to Netty 4.1.29 #33984

Search

• Upgrade to Lucene-7.5.0-snapshot-13b9e28f9d #32730

• Upgrade to Lucene-7.5.0-snapshot-608f0277b0 #32390

Watcher

• Dependencies: Update javax.mail in watcher to 1.6.2 #33664

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