Elasticsearch version 7.7.0edit

Also see Breaking changes in 7.7.

Breaking changesedit

Highlighting
  • Highlighters skip ignored keyword values #53408 (issue: #43800)
Infra/Core
  • Remove DEBUG-level default logging from actions #51459 (issue: #51198)
Mapping
  • Dynamic mappings in indices created on 8.0 and later have stricter validation at mapping update time and results in a deprecation warning for indices created in Elasticsearch 7.7.0 and later. (e.g. incorrect analyzer settings or unknown field types). #51233 (issues: #17411, #24419)
Search
  • Make range query rounding consistent #50237 (issue: #50009)
  • Pipeline aggregation validation errors that used to return HTTP 500s/Internal Server Errors now return 400/Bad Request #53669. As a bonus we now return a list of validation errors rather than returning the first one we encounter.

Breaking Java changesedit

Infra/Core
  • Fix ActionListener.map exception handling #50886
Machine Learning
  • Add expected input field type to trained model config #53083
Transform
  • Enhance the output of preview to return full destination index details #53572

Deprecationsedit

Allocation
  • Deprecated support for delaying state recovery pending master nodes #53646 (issue: #51806)
Authentication
  • Add warnings for invalid realm order config (#51195) #51515
  • Deprecate timeout.tcp_read AD/LDAP realm setting #47305 (issue: #46028)
Engine
Features/Features
  • Add cluster.remote.connect to deprecation info API #54142 (issue: #53924)
Infra/Core
  • Add deprecation check for listener thread pool #53438 (issues: #53049, #53317)
  • Deprecate the logstash enabled setting #53367
  • Deprecate the listener thread pool #53266 (issue: #53049)
  • Deprecate creation of dot-prefixed index names except for hidden and system indices #49959
Infra/REST API
  • Deprecate undocumented alternatives to the nodes hot threads API (#52640) #52930 (issue: #52640)
Machine Learning
  • Renaming inference processor field field_mappings to new name field_map #53433
Search
  • Emit deprecation warning when TermsLookup contains a type #53731 (issue: #41059)
  • Deprecate BoolQueryBuilder’s mustNot field #53125

New featuresedit

Aggregations
  • Preserve metric types in top_metrics #53288
  • Support multiple metrics in top_metrics agg #52965 (issue: #51813)
  • Add size support to top_metrics #52662 (issue: #51813)
  • HLRC support for string_stats #52163
  • Add Boxplot Aggregation #51948 (issue: #33112)
Analysis
  • Add nori_number token filter in analysis-nori #53583
Authentication
  • Create API Key on behalf of other user #52886 (issue: #48716)
Geo
  • Add support for distance queries on shape queries #53468
  • Add support for distance queries on geo_shape queries #53466 (issues: #13351, #39237)
  • Add support for multipoint shape queries #52564 (issue: #52133)
  • Add support for multipoint geoshape queries #52133 (issue: #37318)
Infra/Core
Infra/Packaging
  • Introduce aarch64 packaging #53914
Machine Learning
  • Implement ILM policy for .ml-state* indices #52356 (issue: #29938)
  • Add instrumentation to report statistics related to data frame analytics jobs such as progress, memory usage, etc. #906
  • Multiclass classification #1037
Mapping
  • Introduce a constant_keyword field. #49713
SQL
  • Add constant_keyword support #53241 (issue: #53016)
  • Add optimisations for not-equalities #51088 (issue: #49637)
  • Add support for passing query parameters in REST API calls #51029 (issue: #42916)
Search
  • Add a cluster setting to disallow expensive queries #51385 (issue: #29050)
  • Add new x-pack endpoints to track the progress of a search asynchronously #49931 (issue: #49091)

Enhancementsedit

Aggregations
  • Fixed rewrite of time zone without DST #54398
  • Try to save memory on aggregations #53793
  • Speed up partial reduce of terms aggregations #53216 (issue: #51857)
  • Simplify SiblingPipelineAggregator #53144
  • Add histogram field type support to boxplot aggs #52265 (issues: #33112, #52233)
  • Percentiles aggregation validation checks for range #51871 (issue: #51808)
  • Begin moving date_histogram to offset rounding (take two) #51271 (issues: #50609, #50873)
  • Password-protected Keystore Feature Branch PR #51123 (issues: #32691, #49340)
  • Implement top_metrics agg #51155 (issue: #48069)
  • Bucket aggregation circuit breaker optimization. #46751
Analysis
  • Removes old Lucene’s experimental flag from analyzer documentations #53217
Authentication
Authorization
  • Allow kibana_system to create and invalidate API keys on behalf of other users #53824 (issue: #48716)
  • Add "grant_api_key" cluster privilege #53527 (issues: #48716, #52886)
  • Giving kibana user privileges to create custom link index #53221 (issue: #59305)
  • Allow kibana to collect APM telemetry in background task #52917 (issue: #50757)
  • Add the new maintenance privilege containing 4 actions (#29998) #50643
Cluster Coordination
  • Describe STALE_STATE_CONFIG in ClusterFormationFH #53878 (issue: #53734)
Distributed
  • Introduce formal role for remote cluster client #53924
  • Shortcut query phase using the results of other shards #51852 (issues: #49601, #51708)
  • Flush instead of synced-flush inactive shards #49126 (issues: #31965, #48430)
Engine
  • Restore off-heap loading for term dictionary in ReadOnlyEngine #53713 (issues: #43158, #51247)
  • Separate translog from index deletion conditions #52556
  • Always rewrite search shard request outside of the search thread pool #51708 (issue: #49601)
  • Move the terms index of _id off-heap. #52405 (issue: #42838)
  • Cache completion stats between refreshes #51991 (issue: #51915)
  • Use local checkpoint to calculate min translog gen for recovery #51905 (issue: #49970)
Features/CAT APIs
  • /_cat/shards support path stats #53461
  • Allow _cat indices & aliases to use indices options #53248 (issue: #52304)
Features/Features
  • Enable deprecation checks for removed settings #53317
Features/ILM+SLM
  • Use Priority.IMMEDIATE for stop ILM cluster update #54909
  • Add cluster update timeout on step retry #54878
  • Hide ILM & SLM history aliases #53564
  • Avoid race condition in ILMHistorySotre #53039 (issues: #50353, #52853)
  • Make FreezeStep retryable #52540
  • Make DeleteStep retryable #52494
  • Allow forcemerge in the hot phase for ILM policies #52073 (issue: #43165)
  • Stop policy on last PhaseCompleteStep instead of TerminalPolicyStep #51631 (issue: #48431)
  • Convert ILM and SLM histories into hidden indices #51456
  • Make UpdateSettingsStep retryable #51235 (issues: #44135, #48183)
  • Expose master timeout for ILM actions #51130 (issue: #44136)
  • Wait for active shards on rolled index in a separate step #50718 (issues: #44135, #48183)
  • Adding best_compression #49974
Features/Indices APIs
Features/Ingest
  • Reduce log level for pipeline failure #54097 (issue: #51459)
  • Support array for all string ingest processors #53343 (issue: #51087)
  • Add empty_value parameter to CSV processor #51567
  • Add pipeline name to ingest metadata #50467 (issue: #42106)
Features/Java High Level REST Client
  • SourceExists HLRC uses GetSourceRequest instead of GetRequest #51789 (issue: #50885)
  • Add async_search.submit to HLRC #53592 (issue: #49091)
  • Add Get Source API to the HLRC #50885 (issue: #47678)
Features/Monitoring
  • Secure password for monitoring HTTP exporter #50919 (issue: #50197)
  • Validate SSL settings at parse time #49196 (issue: #47711)
Features/Watcher
  • Make watch history indices hidden #52962 (issue: #50251)
  • Upgrade to the latest OWASP HTML sanitizer #50765 (issue: #50395)
Infra/Core
  • Enable helpful null pointer exceptions #54853
  • Allow keystore add to handle multiple settings #54229 (issue: #54191)
  • Report parser name and location in XContent deprecation warnings #53805
  • Report parser name and location in XContent deprecation warnings #53752
  • Deprecate all variants of a ParseField with no replacement #53722
  • Allow specifying an exclusive set of fields on ObjectParser #52893
  • Support joda style date patterns in 7.x #52555
  • Implement hidden aliases #52547 (issue: #52304)
  • Allow ObjectParsers to specify required sets of fields #49661 (issue: #48824)
Infra/Logging
  • Capture stdout and stderr to log4j log #50259 (issue: #50156)
Infra/Packaging
  • Use AdoptOpenJDK API to Download JDKs #55127 (issue: #55125)
  • Introduce aarch64 Docker image #53936 (issue: #53914)
  • Introduce jvm.options.d for customizing JVM options #51882 (issue: #51626)
Infra/Plugins
  • Allow sha512 checksum without filename for maven plugins #52668 (issue: #52413)
Infra/Scripting
  • Scripting: Context script cache unlimited compile #53769 (issue: #50152)
  • Scripting: Increase ingest script cache defaults #53765 (issue: #50152)
  • Scripting: Per-context script cache, default off (#52855) #53756 (issues: #50152, #52855)
  • Scripting: Per-context script cache, default off #52855 (issue: #50152)
  • Improve Painless compilation performance for nested conditionals #52056
  • Scripting: Add char position of script errors #51069 (issue: #50993)
Infra/Settings
  • Allow keystore add-file to handle multiple settings #54240 (issue: #54191)
  • Settings: AffixSettings as validator dependencies #52973 (issue: #52933)
License
  • Simplify ml license checking with XpackLicenseState internals #52684 (issue: #52115)
  • License removal leads back to a basic license #52407 (issue: #45022)
  • Refactor license checking #52118 (issue: #51864)
  • Add enterprise mode and refactor #51864 (issue: #51081)
Machine Learning
  • Stratified cross validation split for classification #54087
  • Data frame analytics data counts #53998
  • Verify that the field is aggregatable before attempting cardinality aggregation #53874 (issue: #53876)
  • Adds multi-class feature importance support #53803
  • Data frame analytics analysis stats #53788
  • Add a model memory estimation endpoint for anomaly detection #53507 (issue: #53219)
  • Adds new default_field_map field to trained models #53294
  • Improve DF analytics audits and logging #53179
  • Add indices_options to datafeed config and update #52793 (issue: #48056)
  • Parse and report memory usage for DF Analytics #52778
  • Adds the class_assignment_objective parameter to classification #52763 (issue: #52427)
  • Add reason to DataFrameAnalyticsTask updateState log message #52659 (issue: #52654)
  • Add support for multi-value leaves to the tree model #52531
  • Make ml internal indices hidden #52423 (issue: #52420)
  • Add _cat/ml/data_frame/analytics API #52260 (issue: #51413)
  • Adds feature importance option to inference processor #52218
  • Switch poor categorization audit warning to use status field #52195 (issues: #50749, #51146, #51879)
  • Retry persisting DF Analytics results #52048
  • Improve multiline_start_pattern for CSV in find_file_structure #51737
  • Add _cat/ml/trained_models API #51529 (issue: #51414)
  • Add GET _cat/ml/datafeeds #51500 (issue: #51411)
  • Use CSV ingest processor in find_file_structure ingest pipeline #51492 (issue: #56038)
  • Add _cat/ml/anomaly_detectors API #51364
  • Add tags url param to GET #51330
  • Add parsers for inference configuration classes #51300
  • Make datafeeds work with nanosecond time fields #51180 (issue: #49889)
  • Adds support for a global calendars #50372 (issue: #45013)
  • Speed up computation of feature importance 1005
  • Improve initialization of learn rate for better and more stable results in regression and classification #948
  • Add number of processed training samples to the definition of decision tree nodes #991
  • Add new model_size_stats fields to instrument categorization #948, #51879 (issue: #50749)
  • Improve upfront memory estimation for all data frame analyses, which were higher than necessary. This will improve the allocation of data frame analyses to cluster nodes #1003
  • Upgrade the compiler used on Linux from gcc 7.3 to gcc 7.5, and the binutils used in the build from version 2.20 to 2.34 #1013
  • Add instrumentation of the peak memory consumption for data frame analytics jobs #1022
  • Remove all memory overheads for computing tree SHAP values #1023
  • Distinguish between empty and missing categorical fields in classification and regression model training #1034
  • Add instrumentation information for supervised learning data frame analytics jobs #1031
  • Add instrumentation information for outlier detection data frame analytics jobs #1068
  • Write out feature importance for multi-class models #1071
  • Enable system call filtering to the native process used with data frame analytics #1098
Mapping
  • Wildcard field - add normalizer support #53851
  • Append index name for the source of the cluster put-mapping task #52690
Network
  • Give helpful message on remote connections disabled #53690
  • Add server name to remote info API #53634
  • Log when probe succeeds but full connection fails #51304
  • Encrypt generated key with AES #51019 (issue: #50843)
Ranking
  • Adds recall@k metric to rank eval API #52577 (issue: #51676)
SQL
  • JDBC debugging enhancement #53880
  • Transfer version compatibility decision to the server #53082 (issue: #52766)
  • Use a proper error message for queries directed at empty mapping indices #52967 (issue: #52865)
  • Use calendar_interval of 1d for HISTOGRAMs with 1 DAY intervals #52749 (issue: #52713)
  • Use a calendar interval for histograms over 1 month intervals #52586 (issue: #51538)
  • Make parsing of date more lenient #52137 (issue: #49379)
  • Enhance timestamp escaped literal parsing #52097 (issue: #46069)
  • Handle uberjar scenario where the ES jdbc driver file is bundled in another jar #51856 (issue: #50201)
  • Verify Full-Text Search functions not allowed in SELECT #51568 (issue: #47446)
  • Extend the optimisations for equalities #50792 (issue: #49637)
  • Add trace logging for search responses coming from server #50530
  • Extend DATE_TRUNC to also operate on intervals(elastic - #46632 ) #47720 (issue: #46632)
Search
  • HLRC: Don’t send defaults for SubmitAsyncSearchRequest #54200
  • Reduce performance impact of ExitableDirectoryReader #53978 (issues: #52822, #53166, #53496)
  • Add heuristics to compute pre_filter_shard_size when unspecified #53873 (issue: #39835)
  • Add async_search get and delete APIs to HLRC #53828 (issue: #49091)
  • Increase step between checks for cancellation #53712 (issues: #52822, #53496)
  • Refine SearchProgressListener internal API #53373
  • Check for query cancellation during rewrite #53166 (issue: #52822)
  • Implement Cancellable DirectoryReader #52822
  • Address MinAndMax generics warnings #52642 (issue: #49092)
  • Clarify when shard iterators get sorted #52633
  • Generalize how queries on _index are handled at rewrite time #52486 (issues: #49254, #49713)
  • Remove the query builder serialization from QueryShardException message #51885 (issues: #48910, #51843)
  • Short circuited to MatchNone for non-participating slice #51207
  • Add "did you mean" to unknown queries #51177
  • Exclude unmapped fields during max clause limit checking for querying #49523 (issue: #49002)
Security
  • Add error message in JSON response #54389
Snapshot/Restore
  • Use Azure Bulk Deletes in Azure Repository #53919 (issue: #53865)
  • Only link fd* files during source-only snapshot #53463 (issue: #50231)
  • Add Blob Download Retries to GCS Repository #52479 (issues: #46589, #52319)
  • Better Incrementality for Snapshots of Unchanged Shards #52182
  • Add Region and Signer Algorithm Overrides to S3 Repos #52112 (issue: #51861)
  • Allow Parallel Snapshot Restore And Delete #51608 (issue: #41463)
Store
  • HybridDirectory should mmap postings. #52641
Transform
  • Transition Transforms to using hidden indices for notifcations index #53773 (issue: #53762)
  • Add processing stats to record the time spent for processing results #53770
  • Create GET _cat/transforms API Issue #53643 (issue: #51412)
  • Add support for script in group_by #53167 (issue: #43152)
  • Implement node.transform to control where to run a transform #52712 (issues: #48734, #50033, #52200)
  • Add support for filter aggregation #52483 (issue: #52151)
  • Provide exponential_avg* stats for batch transforms #52041 (issue: #52037)
  • Improve irrecoverable error detection - part 2 #52003 (issue: #51820)
  • Mark transform API’s stable #51862
  • Improve irrecoverable error detection #51820 (issue: #50135)
  • Add support for percentile aggs #51808 (issue: #51663)
  • Disallow fieldnames with a dot at start and/or end #51369
  • Avoid mapping problems with index templates #51368 (issue: #51321)
  • Handle permanent bulk indexing errors #51307 (issue: #50122)
  • Improve force stop robustness in case of an error #51072

Bug fixesedit

Aggregations
Allocation
  • Improve performance of shards limits decider #53577 (issue: #53559)
Analysis
  • Mask wildcard query special characters on keyword queries #53127 (issue: #46300)
  • Fix caching for PreConfiguredTokenFilter #50912 (issue: #50734)
Audit
Authentication
  • Fix responses for the token APIs #54532 (issue: #53323)
  • Fix potential bug in concurrent token refresh support #53668
  • Respect runas realm for ApiKey security operations #52178 (issue: #51975)
  • Preserve ApiKey credentials for async verification #51244
  • Don’t fallback to anonymous for tokens/apikeys #51042 (issue: #50171)
  • Fail gracefully on invalid token strings #51014
Authorization
  • Explicitly require that delegate API keys have no privileges #53647
  • Allow _rollup_search with read privilege #52043 (issue: #50245)
CCR
  • Clear recent errors when auto-follow successfully #54997
  • Put CCR tasks on (data && remote cluster clients) #54146 (issue: #53924)
  • Handle no such remote cluster exception in ccr #53415 (issue: #53225)
  • Fix shard follow task cleaner under security #52347 (issues: #44702, #51971)
CRUD
  • Force execution of finish shard bulk request #51957 (issue: #51904)
  • Block too many concurrent mapping updates #51038 (issue: #50670)
  • Return 429 status code when there’s a read_only cluster block #50166 (issue: #49393)
Cluster Coordination
  • Use special XContent registry for node tool #54050 (issue: #53549)
  • Allow static cluster.max_voting_config_exclusions #53717 (issue: #53455)
  • Allow joining node to trigger term bump #53338 (issue: #53271)
  • Ignore timeouts with single-node discovery #52159
Distributed
  • Execute retention lease syncs under system context #53838 (issues: #48430, #53751)
  • Exclude nested documents in LuceneChangesSnapshot #51279
Engine
  • Update translog policy before the next safe commit #54839 (issue: #52223)
  • Fix doc_stats and segment_stats of ReadOnlyEngine #53345 (issues: #51303, #51331)
  • Do not wrap soft-deletes reader for segment stats #51331 (issues: #51192, #51303)
  • Account soft-deletes in FrozenEngine #51192 (issue: #50775)
  • Fixed an index corruption bug that would occur when applying deletes or updates on an index after it has been shrunk. More details can be found on the corresponding issue.
Features/CAT APIs
  • Cat tasks output should respect time display settings #54536
  • Fix NPE in RestPluginsAction #52620 (issue: #45321)
Features/ILM+SLM
  • Ensure error handler is called during SLM retention callback failure #55252 (issue: #55217)
  • Ignore ILM indices in the TerminalPolicyStep #55184 (issue: #51631)
  • Disallow negative TimeValues #53913 (issue: #54041)
  • Fix null config in SnapshotLifecyclePolicy.toRequest #53328 (issues: #44465, #53171)
  • Freeze step retry when not acknowledged #53287
  • Make the set-single-node-allocation retryable #52077 (issue: #43401)
  • Fix the init step to actually be retryable #52076
Features/Indices APIs
  • Read the index.number_of_replicas from template so that wait_for_active_shards is interpreted correctly #54231
Features/Ingest
  • Fix ingest pipeline _simulate api with empty docs never returns a response #52937 (issue: #52833)
  • Handle errors when evaluating if conditions in processors #52543 (issue: #52339)
  • Fix delete enrich policy bug #52179 (issue: #51228)
  • Fix ignore_missing in CsvProcessor #51600
  • Missing suffix for German Month "Juli" in Grok Pattern MONTH #51591 (issue: #51579)
  • Don’t overwrite target field with SetSecurityUserProcessor #51454 (issue: #51428)
Features/Java High Level REST Client
  • Add unsupported parameters to HLRC search request #53745
  • Fix AbstractBulkByScrollRequest slices parameter via Rest #53068 (issue: #53044)
  • Send the fields param via body instead of URL params (elastic#42232) #48840 (issues: #42232, #42877)
Features/Java Low Level REST Client
  • Fix roles parsing in client nodes sniffer #52888 (issue: #52864)
Features/Monitoring
  • Fix NPE in cluster state collector for monitoring #52371 (issue: #52317)
Features/Stats
  • Switch to AtomicLong for "IngestCurrent" metric to prevent negative values #52581 (issues: #52406, #52411)
Features/Watcher
  • Disable Watcher script optimization for stored scripts #53497 (issue: #40212)
  • The watcher indexing listener didn’t handle document level exceptions. #51466 (issue: #32299)
Geo
  • Handle properly indexing rectangles that crosses the dateline #53810
Highlighting
  • Fix highlighter support in PinnedQuery and added test #53716 (issue: #53699)
Infra/Core
  • Make feature usage version aware #55246 (issues: #44589, #55248)
  • Avoid StackOverflowError if write circular reference exception #54147 (issue: #53589)
  • Fix Joda compatibility in stream protocol #53823 (issue: #53586)
  • Avoid self-suppression on grouped action listener #53262 (issue: #53174)
  • Ignore virtual ethernet devices that disappear #51581 (issue: #49914)
  • Fix ingest timezone logic #51215 (issue: #51108)
Infra/Logging
  • Fix LoggingOutputStream to work on windows #51779 (issue: #51532)
Infra/Packaging
  • Handle special characters and spaces in JAVA_HOME path in elasticsearch-service.bat #52676
  • Limit _FILE env var support to specific vars #52525 (issue: #52503)
  • Always set default ES_PATH_CONF for package scriptlets #51827 (issues: #50246, #50631)
Infra/Plugins
Machine Learning
  • Fix node serialization on GET df-nalytics stats without id #54808 (issue: #54807)
  • Allow force stopping failed and stopping DF analytics #54650
  • Take more care that normalize processes use unique named pipes #54636 (issue: #43830)
  • Do not fail Evaluate API when the actual and predicted fields' types differ #54255 (issue: #54079)
  • Get ML filters size should default to 100 #54207 (issues: #39976, #54206)
  • Introduce a "starting" datafeed state for lazy jobs #53918 (issue: #53763)
  • Only retry persistence failures when the failure is intermittent and stop retrying when analytics job is stopping #53725 (issue: #53687)
  • Fix number inference models returned in x-pack info API #53540
  • Make classification evaluation metrics work when there is field mapping type mismatch #53458 (issue: #53485)
  • Perform evaluation in multiple steps when necessary #53295
  • Specifying missing_field_value value and using it instead of empty_string #53108 (issue: #1034)
  • Use event.timezone in ingest pipeline from find_file_structure #52720 (issue: #9458)
  • Better error when persistent task assignment disabled #52014 (issue: #51956)
  • Fix possible race condition starting datafeed #51646 (issues: #50886, #51302)
  • Fix possible race condition when starting datafeed #51302 (issue: #51285)
  • Address two edge cases for categorization.GrokPatternCreator#findBestGrokMatchFromExamples #51168
  • Calculate results and snapshot retention using latest bucket timestamps #51061
  • Use largest ordered subset of categorization tokens for category reverse search regex #970 (issue: #949)
  • Account for the data frame’s memory when estimating the peak memory used by classification and regression model training #996
  • Rename classification and regression parameter maximum_number_trees to max_trees #1047
Mapping
  • Throw better exception on wrong dynamic_templates syntax #51783 (issue: #51486)
Network
  • Add support for more named curves #55179 (issue: #55031)
  • Allow proxy mode server name to be updated #54107
  • Invoke response handler on failure to send #53631
  • Do not log no-op reconnections at DEBUG #53469
  • Fix RemoteConnectionManager size() method #52823 (issue: #52029)
  • Remove seeds dependency for remote cluster settings #52796
  • Add host address to BindTransportException message #51269 (issue: #48001)
Percolator
  • Test percolate queries using NOW and sorting #52758 (issues: #52618, #52748)
  • Don’t index ranges including NOW in percolator #52748 (issue: #52617)
Reindex
SQL
  • Fix ODBC metadata for DATE & TIME data types #55316 (issue: #41086)
  • Fix NPE for parameterized LIKE/RLIKE #53573 (issue: #53557)
  • Add support for index aliases for SYS COLUMNS command #53525 (issue: #31609)
  • Fix issue with LIKE/RLIKE as painless script #53495 (issue: #53486)
  • Fix column size for IP data type #53056 (issue: #52762)
  • Fix sql cli sourcing of x-pack-env #52613 (issue: #47803)
  • Supplement input checks on received request parameters #52229
  • Fix issue with timezone when paginating #52101 (issue: #51258)
  • Fix ORDER BY on aggregates and GROUPed BY fields #51894 (issue: #50355)
  • Fix milliseconds handling in intervals #51675 (issue: #41635)
  • Fix ORDER BY YEAR() function #51562 (issue: #51224)
  • Change the way unsupported data types fields are handled #50823
  • Selecting a literal from grouped by query generates error #41964 (issues: #41413, #41951)
Search
  • Improve robustness of Query Result serializations #54692 (issue: #54665)
  • Fix Term Vectors with artificial docs and keyword fields #53504 (issue: #53494)
  • Fix concurrent requests race over scroll context limit #53449
  • Fix pre-sorting of shards in the can_match phase #53397
  • Fix potential NPE in FuzzyTermsEnum #53231 (issue: #52894)
  • Fix inaccurate total hit count in _search/template api #53155 (issue: #52801)
  • Harden search context id #53143
  • Correct boost in script_score query and error on negative scores #52478 (issue: #48465)
Snapshot/Restore
  • Exclude Snapshot Shard Status Update Requests from Circuit Breaker #55376 (issue: #54714)
  • Fix Snapshot Completion Listener Lost on Master Failover #54286
  • Fix Non-Verbose Snapshot List Missing Empty Snapshots #52433
  • Fix Inconsistent Shard Failure Count in Failed Snapshots #51416 (issue: #47550)
  • Fix Overly Aggressive Request DeDuplication #51270 (issue: #51253)
Store
  • Fix synchronization in ByteSizeCachingDirectory #52512
Transform
  • Fixing naming in HLRC and _cat to match API content #54300 (issue: #53946)
  • Transform optmize date histogram #54068 (issue: #54254)
  • Add version guards around Transform hidden index settings #54036 (issue: #53931)
  • Fix NPE in derive stats if shouldStopAtNextCheckpoint is set #52940
  • Fix mapping deduction for scaled_float #51990 (issue: #51780)
  • Fix stats can return old state information if security is enabled #51732 (issue: #51728)

Upgradesedit

Authentication
Engine
  • Upgrade to lucene 8.5.0 release #54077
  • Upgrade to final lucene 8.5.0 snapshot #53293
  • Upgrade to Lucene 8.5.0-snapshot-c4475920b08 #52950
Features/Ingest
Infra/Core
Infra/Packaging
  • Upgrade the bundled JDK to JDK 13.0.2 #51511
Security
  • Update BouncyCastle to 1.64 #52185
Snapshot/Restore
  • Upgrade GCS Dependency to 1.106.0 #54092
  • Upgrade to AWS SDK 1.11.749 #53962 (issue: #53191)
  • Upgrade to Azure SDK 8.6.2 #53865
  • Upgrade GCS SDK to 1.104.0 #52839