Elasticsearch version 7.17.0edit

Also see Breaking changes in 7.17.

Known issuesedit

  • Elasticsearch fails to parse system index migration data from the cluster state (issue: #84115)
  • Feature migration refuses to run if all features requiring upgrade have encountered errors (issue: #83917)
  • Migrating system indices fails for tasks with mapper_parsing_exception (issue: #83779)

These issues will impact any subsequent upgrade to 8.x, and are fixed in 7.17.1. We strongly recommend that all users upgrade to a later patch release of 7.17 before upgrading to 8.x.

Deprecationsedit

Mapping
Transform

Enhancementsedit

Audit
Authorization
  • Allow read template with cluster monitor privilege #82046 (issue: #78832)
  • Make authorization performance log message configurable and disabled by default #82648 (issue: #75439)
  • Add Kibana system permissions for Endpoint action indices #81953
ILM+SLM
  • Add an index→step cache to the PolicyStepsRegistry #82316 (issue: #77466)
  • Migrate legacy/v2/component templates away from custom attributes routing #82472 (issue: #82170)
  • Migrate to data tiers API dry run on any ILM status #82226 (issue: #82169)
Infra/Core
  • Allow scaling executors to reject tasks after shutdown #81856 (issues: #77017, #77178)
  • Prevent direct upgrade of indices from 6.8 to 8.0 #82689 (issue: #81326)
Infra/Logging
  • Adjust ILM policy for deprecation logs #82833
  • Do no use x-opaque-id for deduplicating Elastic originating requests #82855 (issue: #82810)
Infra/Settings
Java Low Level REST Client
  • Expose HTTP client and allow overriding meta header #81955
License
  • Add DEBUG log when document level security and field level security usage is detected #82182 (issue: #79152)
Machine Learning
  • Move datafeed stats action off of master node #82271
Watcher
  • Prevent watcher from starting if its templates are missing #82395

Bug fixesedit

Aggregations
  • Fix bucket keys format for range aggregations on float field #81801 (issue: #81749)
  • Fix cardinality aggregation in asynchronous search #82108
  • Fix missing fields in range aggregation response for date fields #82732 (issue: #82688)
Allocation
  • Correct context for batched reroute notifications #83019
Authorization
CRUD
  • Fix potential listener leak in TransportBulkAction #81894
Geo
  • Handle degenerated rectangles in vector tiles #82404 (issue: #81891)
  • GeoPolygonDecomposer might fail due to numerical errors when calculating intersection with the dateline #82953 (issue: #82840)
ILM+SLM
  • Migrate the coldest node attribute for data tier routing #81940 (issue: #81633)
  • Retry ILM step to safely refresh the cached phase #82613 (issue: #81921)
  • Fix ILM allocate action to allow only total_shards_per_node #81944 (issue: #81943)
Indices APIs
  • Make the rollover API respect the request’s master_timeout #82326 (issue: #81762)
Infra/Core
  • Allow clearing blocks on managed system indices #82507 (issue: #80814)
Infra/Logging
  • Add doPrivileged section in deprecation logger #81819 (issue: #81708)
  • Always emit product origin to deprecation log if present #83115
Ingest
  • Filter enrich policy index deletes to just the policy’s associated indices #82568
  • Fix enrich cache corruption bug #82441 (issue: #82340)
Java Low Level REST Client
  • Fix version resolution and encoding in LLRC #81989
Machine Learning
  • Fix annotations index maintenance after reindexing #82304 (issue: #82250)
  • Improve cleanup for model snapshot upgrades #81831 (issue: #81578)
  • Make delete intervening results more selective #82437
  • Skip time to next interval with data for datafeeds with aggs #82488 (issue: #82406)
  • Update running process when global calendar changes #83044
  • Avoid transient poor time series modeling after detecting new seasonal components. This can affect cases where there are fast and slow repeats in the data, for example 30 minutes and 1 day, and the job uses a short bucket length. #2167 (issue: #2166)
Monitoring
  • Always attempt upgrade monitoring templates #82713 (issue: #82453)
Network
  • Correct context for ClusterConnManager listener #83035
Search
  • Fix bug where field is not returned if it has the same prefix as a nested field #82922 (issue: #82905)
Settings
  • Change deprecation.skip_deprecated_settings to work with dynamic settings #81836
  • Check both node and cluster settings in NodeDeprecationChecks #82487 (issue: #82484)
  • Ignore dynamic settings specified by deprecation.skip_deprecated_settings in node deprecation checks #82883 (issue: #82889)
Snapshot/Restore
  • Always fail snapshot deletion listeners on master failover #82361 (issue: #81596)
  • Fix potential repository corruption during master failover #82912 (issue: #82911)
  • Remove requirement for key setting on Azure client settings #82030
  • Support GKE workload identity for searchable snapshots #82974 (issue: #82702)
Stats
  • Correct context for CancellableSOCache listener #83021

Upgradesedit

Search
  • Upgrade to Lucene 8.11.1 #81900