IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Elasticsearch version 7.2.0
editElasticsearch version 7.2.0
editAlso see Breaking changes in 7.2.
Known issues
edit- Applying deletes or updates on an index after it has been shrunk may corrupt the index. In order to prevent this issue, it is recommended to stop shrinking read-write indices. For read-only indices, it is recommended to force-merge indices after shrinking, which significantly reduces the likeliness of this corruption in the case that deletes/updates would be applied by mistake. This bug is fixed in Elasticsearch 7.7 and later versions. More details can be found on the corresponding issue.
-
Indices created in 6.x with
date
anddate_nanos
fields using formats that are incompatible with java.time patterns will cause parsing errors, incorrect date calculations or wrong search results. https://github.com/elastic/elasticsearch/pull/52555 This is fixed in Elasticsearch 7.7 and later versions.
Breaking changes
editBreaking Java changes
edit- Infra/Plugins
-
- Remove IndexStore and DirectoryService #42446
Deprecations
editNew features
edit- Authentication
-
- Add an OpenID Connect authentication realm #40674
- Distributed
- Infra/Scripting
- Machine Learning
-
- Add data frame feature #38934
- Ranking
- SQL
-
- Add initial geo support #42031 (issues: #29872, #37206)
- Implement CASE… WHEN… THEN… ELSE… END #41349 (issue: #36200)
- Introduce MAD (MedianAbsoluteDeviation) aggregation #40048 (issue: #39597)
- Introduce SQL TIME data type #39802 (issue: #38174)
- Introduce the columnar option for REST requests #39287 (issue: #37702)
- Snapshot/Restore
- Suggesters
- Features/Ingest
-
- Add HTML strip processor #41888
- Search
Enhancements
edit- Aggregations
-
- Use the breadth first collection mode for significant terms aggs. #29042 (issue: #28652)
- Disallow null/empty or duplicate composite sources #41359 (issue: #32414)
- Move top-level pipeline aggs out of QuerySearchResult #40319 (issue: #40177)
- Remove throws IOException from PipelineAggregationBuilder#create #40222
- Better error messages when pipelines reference incompatible aggs #40068 (issues: #25273, #30152)
- Do not allow Sampler to allocate more than maxDoc size, better CB accounting #39381 (issue: #34269)
- Force selection of calendar or fixed intervals in date histo agg #33727
- Allocation
- Analysis
- Authentication
- Authorization
-
- Support mustache templates in role mappings #39984 (issue: #36567)
- Add .code_internal-* index pattern to kibana user #42247
- Add granular API key privileges #41488 (issue: #40031)
- Add Kibana application privileges for monitoring and ml reserved roles #40651
- Support roles with application privileges against wildcard applications #40398
- CCR
- CRUD
- Cluster Coordination
- Data Frame
-
- Persist and restore checkpoint and position #41942 (issue: #41752)
- Complete the Data Frame task on stop #41752
- Data Frame stop all #41156
- Data Frame HLRC Get Stats API #40327
- Data Frame HLRC Get API #40209
- Data Frame HLRC Preview API #40206
- Data Frame HLRC start & stop APIs #40154 (issue: #29546)
- Add Data Frame client to the Java HLRC #39921
- Discovery-Plugins
-
- Upgrade SDK and test discovery-ec2 credential providers #41732
- Distributed
-
- Prevent in-place downgrades and invalid upgrades #41731
- Add index name to cluster block exception #41489 (issue: #40870)
- Noop peer recoveries on closed index #41400 (issue: #33888)
- Do not trim unsafe commits when open readonly engine #41041 (issue: #33888)
- Avoid background sync on relocated primary #40800 (issue: #40731)
- No mapper service and index caches for replicated closed indices #40423
- Add support for replicating closed indices #39499 (issues: #33888, #33903, #37359, #37413, #38024, #38326, #38327, #38329, #38421, #38631, #38767, #38854, #38955, #39006, #39110, #39186, #39249, #39364)
- Docs Infrastructure
-
- Docs: Simplifying setup by using module configuration variant syntax #40879
- Engine
-
- Simplify initialization of max_seq_no of updates #41161 (issues: #33842, #40249)
- Adjust init map size of user data of index commit #40965
- Don’t mark shard as refreshPending on stats fetching #40458 (issues: #33835, #33847)
- Reject illegal flush parameters #40213 (issue: #36342)
- Always fail engine if delete operation fails #40117 (issue: #33256)
- Combine overriddenOps and skippedOps in translog #39771 (issue: #33317)
-
Return cached segments stats if
include_unloaded_segments
is true #39698 (issue: #39512) - Allow inclusion of unloaded segments in stats #39512
- Never block on scheduled refresh if a refresh is running #39462
- Expose external refreshes through the stats API #38643 (issue: #36712)
- Make setting index.translog.sync_interval be dynamic #37382 (issue: #32763)
- Features/CAT APIs
- Features/Indices APIs
- Features/Java High Level REST Client
- Features/Monitoring
- Geo
- Infra/Core
-
- Validate non-secure settings are not in keystore #42209 (issue: #41831)
- Implement XContentParser.genericMap and XContentParser.genericMapOrdered methods #42059
- Remove manual parsing of JVM options #41962 (issue: #30684)
- Clarify some ToXContent implementations behaviour #41000 (issue: #16347)
-
Remove String interning from
o.e.index.Index
. #40350 (issue: #40263) - Do not swallow exceptions in TimedRunnable #39856 (issue: #36137)
- Infra/Logging
- Infra/Packaging
-
- Clearer error message - installing windows service #33804
- Infra/Resiliency
- Infra/Scripting
- Machine Learning
-
- Improve message misformation error in file structure finder #42175
- Improve hard_limit audit message #42086 (issue: #38034)
- Add validation that rejects duplicate detectors in PutJobAction #40967 (issue: #39704)
- Add created_by info to usage stats #40518 (issue: #38403)
- Data frame transforms config HLRC objects #39691
- Use scaling thread pool and xpack.ml.max_open_jobs cluster-wide dynamic #39320 (issue: #29809)
- Add task recovery on node change #39416
- Stop tasks on failure #39203
- Add _preview endpoint #38924
- Use hardened compiler options to build 3rd party libraries #453
- Only select more complex trend models for forecasting if there is evidence that they are needed #463
- Improve residual model selection #468
- Stop linking to libcrypt on Linux #480
- Improvements to hard_limit audit message #486
- Increase maximum forecast interval from 8 weeks to a limit based on the amount of data seen, up to a maximum of 10 years #214 and #41082 (issue: #41103)
- Mapping
- Network
-
- Update ciphers for TLSv1.3 and JDK11 if available #42082 (issues: #38646, #41385, #41808)
- Show SSL usage when security is not disabled #40672 (issue: #37433)
- Optimize Bulk Message Parsing and Message Length Parsing #39634 (issue: #39286)
- Netty transport accept plaintext connections #39532 (issue: #39531)
- Chunk + Throttle Netty Writes #39286
- Ranking
- Recovery
- Reindex
- SQL
-
- Implement IIF(<cond>, <result1>, <result2>) #41420 (issue: #40917)
- Use field caps inside DESCRIBE TABLE as well #41377 (issue: #34071)
- Implement CURRENT_TIME/CURTIME functions #40662 (issue: #40648)
- Polish behavior of SYS TABLES command #40535 (issue: #40348)
- Adjust the precision and scale for drivers #40467 (issue: #40357)
- Polish parsing of CAST expression #40428
- Fix classpath discovery on Java 10+ #40420 (issue: #40388)
- Spec tests now use classpath discovery #40388 (issue: #40358)
-
Implement
::
cast operator #38774 (issue: #38717)
- Search
-
- Fix range query edge cases #41160 (issue: #40937)
- Add stopword support to IntervalBuilder #39637
- Shortcut counts on exists queries #39570 (issue: #37475)
- Completion suggestions to be reduced once instead of twice #39255
- Rename SearchRequest#withLocalReduction #39108
- Tie break search shard iterator comparisons on cluster alias #38853
- Clean up ShardSearchLocalRequest #38574
- Handle unmapped fields in _field_caps API #34071
-
Make 0 as invalid value for
min_children
inhas_child
query #33073 (issue: #32949) - Analyze numbers, dates and ips with a whitespace analyzer in text queries #27395
- Add date and date_nanos conversion to the numeric_type sort option #40199
-
Add
use_field
option to intervals query #40157 - Add overlapping, before, after filters to intervals query #38999
- Security
- Snapshot/Restore
-
- Remove IndexShard dependency from Repository #42213
- Add shared access signature authentication support #42117
- Support multiple repositories in get snapshot request #41799 (issue: #41210)
- Implement Bulk Deletes for GCS Repository #41368 (issue: #40322)
- Add Bulk Delete Api to BlobStore #40322 (issues: #40144, #40250)
- Async Snapshot Repository Deletes #40144 (issues: #39656, #39657)
- Allow snapshotting replicated closed indices #39644 (issue: #33888)
- Add support for S3 intelligent tiering (#38836) #39376 (issue: #38836)
- Store
-
- Log missing file exception when failing to read metadata snapshot #32920
- Suggesters
-
- Tie-break completion suggestions with same score and surface form #39564
Bug fixes
edit- Aggregations
- Allocation
- Analysis
- Authentication
-
- Refresh remote JWKs on all errors #42850
- Fix refresh remote JWKS logic #42662
- Fix settings prefix for realm truststore password #42336 (issues: #30241, #41663)
- Merge claims from userinfo and ID Token correctly #42277
- Do not refresh realm cache unless required #42169 (issue: #35218)
-
Amend
prepareIndexIfNeededThenExecute
for security token refresh #41697 - Fix token Invalidation when retries exhausted #39799
- Authorization
- CCR
- CRUD
-
- Fix NPE when rejecting bulk updates #42923
- Cluster Coordination
- Data Frame
- Distributed
- Engine
- Features/ILM
- Features/Indices APIs
- Features/Ingest
-
- Build local year inside DateFormat lambda #42120
- Features/Java High Level REST Client
- Features/Watcher
- Geo
- Highlighting
- Infra/Core
-
- Fix roundUp parsing with composite patterns #43080 (issue: #42835)
- scheduleAtFixedRate would hang #42993 (issue: #38441)
- Only ignore IOException when fsyncing on dirs #42972 (issue: #42950)
- Fix node close stopwatch usage #41918
- Make ISO8601 date parser accept timezone when time does not have seconds #41896
- Allow unknown task time in QueueResizingEsTPE #41810 (issue: #41448)
- Parse composite patterns using ClassicFormat.parseObject #40100 (issue: #39916)
- Infra/Packaging
- Infra/Settings
- Machine Learning
- Mapping
-
- Fix possible NPE in put mapping validators #43000 (issue: #37675)
- Fix merging of text field mappers #40627
- Fix an off-by-one error in the vector field dimension limit. #40489
- Fix not Recognizing Disabled Object Mapper #39862 (issue: #39456)
- Avoid copying the field alias lookup structure unnecessarily. #39726
- Handle NaNs when detrending seasonal components #408
- Network
- Percolator
- Recovery
- Reindex
- Rollup
- SQL
- Search
-
-
Fix IntervalBuilder#analyzeText to never return
null
#42750 (issue: #42587) - Fix sorting on nested field with unmapped #42451 (issue: #33644)
- Always set terminated_early if terminate_after is set in the search request #40839 (issue: #33949)
- more_like_this query to throw an error if the like fields is not provided #40632
- Fixing 503 Service Unavailable errors during fetch phase #39086
- Fix IndexSearcherWrapper visibility #39071 (issue: #30758)
-
Fix IntervalBuilder#analyzeText to never return
- Snapshot/Restore
- Suggesters