OpenSearch/docs/reference/release-notes/7.4.asciidoc

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[[release-notes-7.4.0]]
== {es} version 7.4.0
coming[7.4.0]
Also see <<breaking-changes-7.4,Breaking changes in 7.4>>.
[[breaking-7.4.0]]
[float]
=== Breaking changes
Data Frame::
* [ML-DataFrame] Combine task_state and indexer_state in _stats {pull}45276[#45276] (issue: {issue}45201[#45201])
* [ML] Improve response format of data frame stats endpoint {pull}44350[#44350] (issue: {issue}43767[#43767])
Infra/REST API::
* Update the schema for the REST API specification {pull}42346[#42346] (issue: {issue}35262[#35262])
Machine Learning::
* [ML] Improve progress reportings for DF analytics {pull}45856[#45856]
Ranking::
* Forbid empty doc values on vector functions {pull}43944[#43944]
Search::
* Use float instead of double for query vectors. {pull}46004[#46004]
Snapshot/Restore::
* Provide an Option to Use Path-Style-Access with S3 Repo {pull}41966[#41966] (issue: {issue}41816[#41816])
[[breaking-java-7.4.0]]
[float]
=== Breaking Java changes
Geo::
* Geo: Change order of parameter in Geometries to lon, lat 7.x {pull}45618[#45618] (issues: {issue}45048[#45048], {issue}45332[#45332])
* Geo: Change order of parameter in Geometries to lon, lat {pull}45332[#45332] (issue: {issue}45048[#45048])
Network::
* Stop Recreating Wrapped Handlers in RestController {pull}44964[#44964]
[[deprecation-7.4.0]]
[float]
=== Deprecations
Geo::
* Geo: add Geometry-based query builders to QueryBuilders {pull}45058[#45058] (issues: {issue}44715[#44715], {issue}45048[#45048])
Infra/Core::
* Add deprecation check for pidfile setting {pull}45939[#45939] (issues: {issue}45938[#45938], {issue}45940[#45940])
* Deprecate the pidfile setting {pull}45938[#45938]
* Add node.processors setting in favor of processors {pull}45855[#45855]
* Deprecate setting processors to more than available {pull}44889[#44889]
Infra/Settings::
* Add deprecation check for processors {pull}45925[#45925] (issues: {issue}45855[#45855], {issue}45905[#45905])
Machine Learning::
* [ML] [7.x] Only emit deprecation warning if there was actual change of a datafeed's job_id. {pull}44755[#44755]
* Deprecate the ability to update datafeed's job_id. {pull}44691[#44691] (issue: {issue}44615[#44615])
[[feature-7.4.0]]
[float]
=== New features
Aggregations::
* Support Range Fields in Histogram and Date Histogram {pull}45395[#45395]
* Add Cumulative Cardinality agg (and Data Science plugin) {pull}43661[#43661] (issue: {issue}43550[#43550])
Analysis::
* Add support for inlined user dictionary in the Kuromoji plugin {pull}45489[#45489] (issue: {issue}25343[#25343])
Authentication::
* PKI realm authentication delegation {pull}45906[#45906] (issue: {issue}34396[#34396])
* PKI Authentication Delegation in new endpoint {pull}43796[#43796] (issue: {issue}34396[#34396])
Authorization::
* Add granular privileges for API keys {pull}42020[#42020]
Features/ILM::
* Add Snapshot Lifecycle Management {pull}43934[#43934] (issue: {issue}38461[#38461])
Features/Watcher::
* Add max_iterations configuration to watcher action with foreach execution {pull}45715[#45715] (issues: {issue}41997[#41997], {issue}45169[#45169])
Geo::
* [SPATIAL] New ShapeQueryBuilder for querying indexed cartesian geometry {pull}45108[#45108] (issue: {issue}44980[#44980])
* [GEO] New ShapeFieldMapper for indexing cartesian geometries {pull}44980[#44980]
* Add Circle Processor {pull}43851[#43851] (issue: {issue}43554[#43554])
Machine Learning::
* Allow the user to specify 'query' in Evaluate Data Frame request {pull}45775[#45775] (issue: {issue}45729[#45729])
* Call the new _estimate_memory_usage API endpoint on df analytics _start {pull}45536[#45536] (issues: {issue}44699[#44699], {issue}45544[#45544])
* HLRC for memory usage estimation API {pull}45531[#45531] (issues: {issue}44699[#44699], {issue}45188[#45188])
* Implement ml/data_frame/analytics/_estimate_memory_usage API endpoint {pull}45188[#45188] (issue: {issue}44699[#44699])
[[enhancement-7.4.0]]
[float]
=== Enhancements
Aggregations::
* Add more flexibility to MovingFunction window alignment {pull}44360[#44360] (issue: {issue}42181[#42181])
* Optimize Min and Max BKD optimizations {pull}44315[#44315] (issue: {issue}44290[#44290])
* Allow pipeline aggs to select specific buckets from multi-bucket aggs {pull}44179[#44179]
Allocation::
* Defer reroute when starting shards {pull}44433[#44433] (issues: {issue}42105[#42105], {issue}42738[#42738])
* Allow RerouteService to reroute at lower priority {pull}44338[#44338]
* Auto-release of read-only-allow-delete block when disk utilization fa… {pull}42559[#42559] (issue: {issue}39334[#39334])
Analysis::
* Allow all token/char filters in normalizers {pull}43803[#43803] (issue: {issue}43758[#43758])
Authentication::
* Allow Transport Actions to indicate authN realm {pull}45767[#45767] (issue: {issue}45331[#45331])
* Explicitly fail if a realm only exists in keystore {pull}44471[#44471] (issue: {issue}44207[#44207])
Authorization::
* Add `manage_own_api_key` cluster privilege {pull}45897[#45897] (issue: {issue}40031[#40031])
* Consider `owner` flag when retrieving/invalidating keys with API key service {pull}45421[#45421] (issue: {issue}40031[#40031])
* REST API changes for manage-own-api-key privilege {pull}44936[#44936] (issue: {issue}40031[#40031])
* Simplify API key service API {pull}44935[#44935] (issue: {issue}40031[#40031])
CCR::
* Include leases in error message when operations no longer available {pull}45681[#45681]
CRUD::
* Return seq_no and primary_term for noop update {pull}44603[#44603] (issue: {issue}42497[#42497])
Cluster Coordination::
* Improve slow logging in MasterService {pull}45086[#45086] (issue: {issue}45007[#45007])
* More logging for slow cluster state application {pull}45007[#45007]
* Ignore unknown fields if overriding node metadata {pull}44689[#44689]
* Allow pending tasks before state recovery {pull}44685[#44685] (issue: {issue}44652[#44652])
Data Frame::
* [ML][Data Frame] Add update transform api endpoint {pull}45154[#45154] (issue: {issue}43438[#43438])
* [ML][Data Frame] add support for bucket_selector {pull}44718[#44718] (issues: {issue}43744[#43744], {issue}44557[#44557])
* [ML][Data Frame] adding force delete {pull}44590[#44590] (issue: {issue}43961[#43961])
* [ML][Data Frame] adding dynamic cluster setting for failure retries {pull}44577[#44577]
* [ML][Data Frame] Add optional defer_validation param to PUT {pull}44455[#44455] (issue: {issue}43439[#43439])
* [ML][Data Frame] add support for geo_bounds aggregation {pull}44441[#44441]
* [ML-DataFrame] Add a frequency option to transform config, default 1m {pull}44120[#44120]
Distributed::
* Do not create engine under IndexShard#mutex {pull}45263[#45263] (issue: {issue}43699[#43699])
Docs Infrastructure::
* add clarification around TESTSETUP docu and error message {pull}43306[#43306]
Engine::
* Flush engine after big merge {pull}46066[#46066]
* Do sync before closeIntoReader when rolling generation to improve index performance {pull}45765[#45765] (issue: {issue}45371[#45371])
* Refactor index engines to manage readers instead of searchers {pull}43860[#43860]
* Async IO Processor release before notify {pull}43682[#43682]
* Enable indexing optimization using sequence numbers on replicas {pull}43616[#43616] (issue: {issue}34099[#34099])
Features/Features::
* Disable String interning on field names for JSON parsing {pull}41039[#41039] (issue: {issue}39890[#39890])
Features/ILM::
* Include in-progress snapshot for a policy with get SLM policy API {pull}45245[#45245]
* Add option to filter ILM explain response {pull}44777[#44777] (issue: {issue}44189[#44189])
* Expose index age in ILM explain output {pull}44457[#44457] (issue: {issue}38988[#38988])
Features/Indices APIs::
* Add Clone Index API {pull}44267[#44267] (issue: {issue}44128[#44128])
* Add description to force-merge tasks {pull}41365[#41365] (issue: {issue}15975[#15975])
Features/Ingest::
* Fix IngestService to respect original document content type {pull}45799[#45799]
* Ingest Attachment: Upgrade tika to v1.22 {pull}45575[#45575]
* Retrieve processors instead of checking existence {pull}45354[#45354]
* Add ingest processor existence helper method {pull}45156[#45156]
* Change the ingest simulate api to not include dropped documents {pull}44161[#44161] (issue: {issue}36150[#36150])
Features/Java High Level REST Client::
* Add XContentType as parameter to HLRC ART#createServerTestInstance {pull}46036[#46036] (issue: {issue}45970[#45970])
* Add CloseIndexResponse to HLRC {pull}44349[#44349] (issue: {issue}39687[#39687])
* Add mapper-extras and the RankFeatureQuery in the hlrc {pull}43713[#43713] (issue: {issue}43634[#43634])
* removing background state update of Request object by RequestConverte… {pull}40156[#40156] (issue: {issue}39666[#39666])
* Add delete aliases API to the high-level REST client {pull}32909[#32909] (issue: {issue}27205[#27205])
Features/Watcher::
* Add SSL/TLS settings for watcher email {pull}45272[#45272] (issue: {issue}30307[#30307])
* Watcher reporting: add email warning if CSV attachment contains values that may be interperted as formulas {pull}44460[#44460]
* Watcher add stopped listener {pull}43939[#43939] (issue: {issue}42409[#42409])
* Improve CryptoService error message on missing secure file {pull}43623[#43623] (issue: {issue}43619[#43619])
Geo::
* Support WKT point conversion to geo_point type {pull}44107[#44107] (issue: {issue}41821[#41821])
Infra/Core::
* Add OCI annotations and adjust existing annotations {pull}45167[#45167] (issues: {issue}45162[#45162], {issue}45166[#45166])
* Use the full hash in build info {pull}45163[#45163] (issue: {issue}45162[#45162])
* Set start of the week to Monday for root locale {pull}43652[#43652] (issues: {issue}41670[#41670], {issue}42588[#42588], {issue}43275[#43275])
Infra/Packaging::
* Remove redundant Java check from Sys V init {pull}45793[#45793] (issue: {issue}45593[#45593])
* Notify systemd when Elasticsearch is ready {pull}44673[#44673]
Infra/Plugins::
* Make plugin verification FIPS 140 compliant {pull}44224[#44224] (issue: {issue}41263[#41263])
Infra/Scripting::
* Whitelist randomUUID in Painless {pull}45148[#45148] (issue: {issue}39080[#39080])
* Add missing ZonedDateTime methods for joda compat layer {pull}44829[#44829] (issue: {issue}44411[#44411])
* Remove stale permissions from untrusted policy {pull}44783[#44783]
Infra/Settings::
* Lift the restrictions that uppercase is not allowed in Setting Name. {pull}45222[#45222] (issue: {issue}43835[#43835])
* Normalize environment paths {pull}45179[#45179] (issue: {issue}45176[#45176])
Machine Learning::
* [ML] Support boolean fields for DF analytics {pull}46037[#46037]
* [ML] Add description to DF analytics {pull}45774[#45774]
* [ML] Add regression analysis to DF analytics {pull}45292[#45292]
* Introduce formal node ML role {pull}45174[#45174] (issues: {issue}29943[#29943], {issue}43175[#43175])
* [ML] Improve CSV header row detection in find_file_structure {pull}45099[#45099] (issue: {issue}45047[#45047])
* [ML] Outlier detection should only fetch docs that have the analyzed … {pull}44944[#44944]
* Persist DatafeedTimingStats with RefreshPolicy.NONE by default {pull}44940[#44940] (issue: {issue}44792[#44792])
* Add result_type field to TimingStats and DatafeedTimingStats documents {pull}44812[#44812]
* Implement exponential average search time per hour statistics. {pull}44683[#44683] (issue: {issue}29857[#29857])
* [ML] Add r_squared eval metric to regression {pull}44248[#44248]
* [ML] Adds support for regression.mean_squared_error to eval API {pull}44140[#44140]
* Add DatafeedTimingStats.average_search_time_per_bucket_ms and TimingStats.total_bucket_processing_time_ms stats {pull}44125[#44125] (issue: {issue}29857[#29857])
* [ML] Add DatafeedTimingStats to datafeed GetDatafeedStatsAction.Response {pull}43045[#43045] (issue: {issue}29857[#29857])
Network::
* Better logging for TLS message on non-secure transport channel {pull}45835[#45835] (issue: {issue}32688[#32688])
* Asynchronously connect to remote clusters {pull}44825[#44825] (issue: {issue}40150[#40150])
* Improve errors when TLS files cannot be read {pull}44787[#44787] (issue: {issue}43079[#43079])
* Add per-socket keepalive options {pull}44055[#44055]
* Move ConnectionManager to async APIs {pull}42636[#42636]
Ranking::
* Precompute vector length on indexing {pull}45390[#45390]
* Search enhancement: pinned queries {pull}44345[#44345] (issue: {issue}44074[#44074])
* Fix parameter value for calling data.advanceExact {pull}44205[#44205]
* Add l1norm and l2norm distances for vectors {pull}44116[#44116] (issue: {issue}37947[#37947])
Recovery::
* Ignore translog retention policy if soft-deletes enabled {pull}45473[#45473] (issue: {issue}45136[#45136])
* Only retain reasonable history for peer recoveries {pull}45208[#45208] (issue: {issue}41536[#41536])
* Use index for peer recovery instead of translog {pull}45136[#45136] (issues: {issue}38904[#38904], {issue}41536[#41536], {issue}42211[#42211])
* Trim local translog in peer recovery {pull}44756[#44756]
* Make peer recovery send file chunks async {pull}44468[#44468] (issues: {issue}36195[#36195], {issue}44040[#44040])
SQL::
* SQL: Break TextFormatter/Cursor dependency {pull}45613[#45613] (issue: {issue}45516[#45516])
* SQL: remove deprecated use of "interval" from date_histogram usage {pull}45501[#45501] (issue: {issue}43922[#43922])
* SQL: use hasValue() methods from Elasticsearch's InspectionHelper classes {pull}44745[#44745] (issue: {issue}35745[#35745])
* Switch from using docvalue_fields to extracting values from _source {pull}44062[#44062] (issue: {issue}41852[#41852])
Search::
* Adds usage stats for vectors: {pull}44512[#44512]
* Associate sub-requests to their parent task in multi search API {pull}44492[#44492]
* Cancel search task on connection close {pull}43332[#43332]
Security::
* Set security index refresh interval to 1s {pull}45434[#45434] (issue: {issue}44934[#44934])
* Handle pwd protected keystores in all CLI tools {pull}45289[#45289]
* Reload secure settings with password {pull}43197[#43197]
* Add passphrase support to elasticsearch-keystore {pull}38498[#38498] (issues: {issue}32691[#32691], {issue}37472[#37472])
Snapshot/Restore::
* add disable_chunked_encoding configuration {pull}44052[#44052]
* Repository Cleanup Endpoint {pull}43900[#43900]
Task Management::
* Remove task null check in TransportAction {pull}45014[#45014]
* TaskListener#onFailure to accept Exception instead of Throwable {pull}44946[#44946]
* Move child task cancellation to TaskManager {pull}44573[#44573] (issue: {issue}44494[#44494])
[[bug-7.4.0]]
[float]
=== Bug fixes
Aggregations::
* Fix early termination of aggregators that run with breadth-first mode {pull}44963[#44963] (issue: {issue}44909[#44909])
* Support BucketScript paths of type string and array. {pull}44694[#44694] (issue: {issue}44385[#44385])
Allocation::
* Avoid overshooting watermarks during relocation {pull}46079[#46079] (issue: {issue}45177[#45177])
* Cluster health should await events plus other things {pull}44348[#44348]
* Do not copy initial recovery filter during split {pull}44053[#44053] (issue: {issue}43955[#43955])
Analysis::
* Enable reloading of synonym_graph filters {pull}45135[#45135] (issue: {issue}45127[#45127])
* Fix AnalyzeAction response serialization {pull}44284[#44284] (issue: {issue}44078[#44078])
Authentication::
* Allow empty token endpoint for implicit flow {pull}45038[#45038]
* Do not use scroll when finding duplicate API key {pull}45026[#45026]
* Fix broken short-circuit in getUnlicensedRealms {pull}44399[#44399]
* Fix X509AuthenticationToken principal {pull}43932[#43932] (issues: {issue}34396[#34396], {issue}43796[#43796])
Authorization::
* Add `manage_own_api_key` cluster privilege {pull}45696[#45696] (issue: {issue}40031[#40031])
* Sparse role queries can throw an NPE {pull}45053[#45053]
CCR::
* Clean up ShardFollowTasks for deleted indices {pull}44702[#44702] (issue: {issue}34404[#34404])
* Skip update if leader and follower settings identical {pull}44535[#44535] (issue: {issue}44521[#44521])
* Avoid stack overflow in auto-follow coordinator {pull}44421[#44421] (issue: {issue}43251[#43251])
* Avoid NPE when checking for CCR index privileges {pull}44397[#44397] (issue: {issue}44172[#44172])
CRUD::
* Allow _update on write alias {pull}45318[#45318] (issue: {issue}31520[#31520])
* Do not allow version in Rest Update API {pull}43516[#43516] (issue: {issue}42497[#42497])
Cluster Coordination::
* Avoid counting votes from master-ineligible nodes {pull}43688[#43688]
Data Frame::
* [ML][Data Frame] moves failure state transition for MT safety {pull}45676[#45676] (issue: {issue}45664[#45664])
* [ML][Data Frame] fixing _start?force=true bug {pull}45660[#45660]
* [ML][Data frame] fixing failure state transitions and race condition {pull}45627[#45627] (issues: {issue}45562[#45562], {issue}45609[#45609])
* [ML-DataFrame] fix starting a batch data frame after stopping at runtime {pull}45340[#45340] (issues: {issue}44219[#44219], {issue}45339[#45339])
* [ML][Data Frames] Fix null aggregation handling in indexer {pull}45061[#45061] (issue: {issue}44906[#44906])
* [ML][Data Frames] unify validation exceptions between PUT/_preview {pull}44983[#44983] (issue: {issue}44953[#44953])
* [ML][Data Frame] treat bulk index failures as an indexing failure {pull}44351[#44351] (issue: {issue}44101[#44101])
* [ML][Data Frame] prevent task from attempting to run when failed {pull}44239[#44239] (issue: {issue}44121[#44121])
* [ML][Data Frame] responding with 409 status code when failing _stop {pull}44231[#44231] (issue: {issue}44103[#44103])
* [ML][Data Frame] adds index validations to _start data frame transform {pull}44191[#44191] (issue: {issue}44104[#44104])
* [ML] Data frame task failure do not make a 500 response {pull}44058[#44058] (issue: {issue}44011[#44011])
* [ML-DataFrame] audit message missing for autostop {pull}43984[#43984] (issue: {issue}43977[#43977])
Distributed::
* Ensure AsyncTask#isScheduled remain false after close {pull}45687[#45687] (issue: {issue}45576[#45576])
* Update translog checkpoint after marking operations as persisted {pull}45634[#45634] (issue: {issue}29161[#29161])
* Fix clock used in update requests {pull}45262[#45262] (issue: {issue}45254[#45254])
* Restore DefaultShardOperationFailedException's reason during deserialization {pull}45203[#45203]
* Use IndicesModule named writables in elasticsearch-shard tool {pull}45036[#45036] (issue: {issue}44628[#44628])
Engine::
* Handle delete document level failures {pull}46100[#46100] (issue: {issue}46083[#46083])
* Handle no-op document level failures {pull}46083[#46083]
* Remove leniency during replay translog in peer recovery {pull}44989[#44989]
* Throw TranslogCorruptedException in more cases {pull}44217[#44217]
* Fail engine if hit document failure on replicas {pull}43523[#43523] (issues: {issue}40435[#40435], {issue}43228[#43228])
Features/ILM::
* Updated slm API spec parameters and URL {pull}44797[#44797]
* Fix swapped variables in error message {pull}44300[#44300]
Features/Indices APIs::
* Fix a bug where mappings are dropped from rollover requests. {pull}45411[#45411] (issue: {issue}45399[#45399])
* Create index with typeless mapping {pull}45120[#45120]
* Check shard limit after applying index templates {pull}44619[#44619] (issues: {issue}34021[#34021], {issue}44567[#44567], {issue}44619[#44619])
* Validate index settings after applying templates {pull}44612[#44612] (issues: {issue}34021[#34021], {issue}44567[#44567])
Features/Java High Level REST Client::
* [Closes #44045] Added 'slices' parameter when submitting reindex request via Java high level REST client {pull}45690[#45690] (issue: {issue}44045[#44045])
* HLRC: Fix '+' Not Correctly Encoded in GET Req. {pull}33164[#33164] (issue: {issue}33077[#33077])
Features/Watcher::
* Fix watcher HttpClient URL creation {pull}45207[#45207] (issue: {issue}44970[#44970])
* Log write failures for watcher history document. {pull}44129[#44129]
Geo::
* Geo: fix geo query decomposition {pull}44924[#44924] (issue: {issue}44891[#44891])
* Geo: add validator that only checks altitude {pull}43893[#43893]
Infra/Core::
* Always check that cgroup data is present {pull}45606[#45606] (issue: {issue}45396[#45396])
* Safe publication of DelayedAllocationService and SnapshotShardsService {pull}45517[#45517] (issue: {issue}38560[#38560])
* Add default CLI JVM options {pull}44545[#44545] (issues: {issue}219[#219], {issue}42021[#42021])
* Fix decimal point parsing for date_optional_time {pull}43859[#43859] (issue: {issue}43730[#43730])
Infra/Logging::
* Fix types field in JSON Search Slow Logs {pull}44641[#44641]
* Add types field to JSON slow logs in 7.x {pull}44592[#44592] (issues: {issue}41354[#41354], {issue}44178[#44178])
Infra/Packaging::
* Add destructiveDistroTest meta task {pull}45762[#45762]
* Use bundled JDK in Sys V init {pull}45593[#45593] (issue: {issue}45542[#45542])
* Restore setting up temp dir for windows service {pull}44541[#44541]
Infra/Plugins::
* Do not checksum all bytes at once in plugin install {pull}44649[#44649] (issue: {issue}44545[#44545])
Infra/REST API::
* Improve error message when index settings are not a map {pull}45588[#45588] (issue: {issue}45126[#45126])
* Add is_write_index column to cat.aliases {pull}44772[#44772]
* Fix URL documentation in API specs {pull}44487[#44487]
Infra/Scripting::
* Fix bugs in Painless SCatch node {pull}45880[#45880]
* Fix JodaCompatibleZonedDateTime casts in Painless {pull}44874[#44874]
Infra/Settings::
* bug fix about elasticsearch.common.settings.Settings.processSetting {pull}44047[#44047] (issue: {issue}43791[#43791])
Machine Learning::
* [ML] Throw an error when a datafeed needs CCS but it is not enabled for the node {pull}46044[#46044] (issue: {issue}46025[#46025])
* Handle "null" value of Estimate memory usage API response gracefully. {pull}45726[#45726] (issue: {issue}44699[#44699])
* [ML] Remove timeout on waiting for DF analytics result processor to complete {pull}45724[#45724] (issue: {issue}45723[#45723])
* [ML] Check dest index is empty when starting DF analytics {pull}45094[#45094]
* [ML] Catch any error thrown while closing data frame analytics process {pull}44958[#44958]
* Treat PostDataActionResponse.DataCounts.bucketCount as incremental rather than absolute (total). {pull}44803[#44803] (issue: {issue}44792[#44792])
* Treat big changes in searchCount as significant and persist the document after such changes {pull}44413[#44413] (issues: {issue}44196[#44196], {issue}44335[#44335])
* Update .ml-config mappings before indexing job, datafeed or df analytics config {pull}44216[#44216] (issue: {issue}44263[#44263])
* [ML] Wait for .ml-config primary before assigning persistent tasks {pull}44170[#44170] (issue: {issue}44156[#44156])
* [ML] Fix ML memory tracker lockup when inner step fails {pull}44158[#44158] (issue: {issue}44156[#44156])
* [ML] Fix datafeed checks when a concrete remote index is present {pull}43923[#43923] (issue: {issue}42113[#42113])
Mapping::
* Make sure to validate the type before attempting to merge a new mapping. {pull}45157[#45157] (issues: {issue}29316[#29316], {issue}43012[#43012])
* Ensure field caps doesn't error on rank feature fields. {pull}44370[#44370] (issue: {issue}44330[#44330])
* Prevent types deprecation warning for indices.exists requests {pull}43963[#43963] (issue: {issue}43905[#43905])
* Add include_type_name in indices.exitst REST API spec {pull}43910[#43910] (issue: {issue}43905[#43905])
Network::
* Fix Broken HTTP Request Breaking Channel Closing {pull}45958[#45958] (issues: {issue}43362[#43362], {issue}43850[#43850])
* Fix plaintext on TLS port logging {pull}45852[#45852] (issue: {issue}32688[#32688])
* transport.publish_address should contain CNAME {pull}45626[#45626] (issues: {issue}32806[#32806], {issue}39970[#39970])
* Fix bug in copying bytes for socket write {pull}45463[#45463] (issue: {issue}45444[#45444])
Recovery::
* Never release store using CancellableThreads {pull}45409[#45409] (issues: {issue}45136[#45136], {issue}45237[#45237])
* Remove leniency in reset engine from translog {pull}44711[#44711]
Reindex::
* Fix issues with serializing BulkByScrollResponse {pull}45357[#45357]
Rollup::
* Fix Rollup job creation to work with templates {pull}43943[#43943]
SQL::
* SQL: adds format parameter to range queries for constant date comparisons {pull}45326[#45326] (issue: {issue}45139[#45139])
* SQL: uniquely named inner_hits sections for each nested field condition {pull}45039[#45039] (issues: {issue}33080[#33080], {issue}44544[#44544])
* SQL: fix URI path being lost in case of hosted ES scenario {pull}44776[#44776] (issue: {issue}44721[#44721])
* SQL: change the size of the list of concrete indices when resolving multiple indices {pull}43878[#43878] (issue: {issue}43876[#43876])
* SQL: handle double quotes escaping {pull}43829[#43829] (issue: {issue}43810[#43810])
* SQL: add pretty printing to JSON format {pull}43756[#43756]
* SQL: handle SQL not being available in a more graceful way {pull}43665[#43665] (issue: {issue}41279[#41279])
Search::
* Ensure top docs optimization is fully disabled for queries with unbounded max scores. {pull}46105[#46105] (issue: {issue}45933[#45933])
* Disallow partial results when shard unavailable {pull}45739[#45739] (issue: {issue}42612[#42612])
* Prevent Leaking Search Tasks on Exceptions in FetchSearchPhase and DfsQueryPhase {pull}45500[#45500]
* Fix an NPE when requesting inner hits and _source is disabled. {pull}44836[#44836] (issue: {issue}43517[#43517])
* Don't use index_phrases on graph queries {pull}44340[#44340] (issue: {issue}43976[#43976])
Security::
* Fix .security-* indices auto-create {pull}44918[#44918]
* SecurityIndexManager handle RuntimeException while reading mapping {pull}44409[#44409]
* Do not swallow I/O exception getting authentication {pull}44398[#44398] (issues: {issue}44172[#44172], {issue}44397[#44397])
* Use system context for looking up connected nodes {pull}43991[#43991] (issue: {issue}43974[#43974])
Snapshot/Restore::
* Fix TransportSnapshotsStatusAction ThreadPool Use {pull}45824[#45824]
* Stop Executing SLM Policy Transport Action on Snapshot Pool {pull}45727[#45727] (issue: {issue}45594[#45594])
* Check again on-going snapshots/restores of indices before closing {pull}43873[#43873]
* Make Timestamps Returned by Snapshot APIs Consistent {pull}43148[#43148] (issue: {issue}43074[#43074])
* Recursively Delete Unreferenced Index Directories {pull}42189[#42189] (issue: {issue}13159[#13159])
Task Management::
* Catch AllocatedTask registration failures {pull}45300[#45300]
[[upgrade-7.4.0]]
[float]
=== Upgrades
Infra/Core::
* Update joda to 2.10.3 {pull}45495[#45495]
Infra/Packaging::
* Upgrade to JDK 12.0.2 {pull}45172[#45172]
Network::
* Upgrade to Netty 4.1.38 {pull}45132[#45132]
Search::
* Upgrade to lucene snapshot 8.3.0-snapshot-8dd116a6158 {pull}45604[#45604] (issue: {issue}43976[#43976])