Elasticsearch version 7.6.2edit

Also see Breaking changes in 7.6.

Bug fixesedit

Allocation
  • Improve performance of shards limits decider #53577 (issue: #53559)
Authentication
  • Fix potential bug in concurrent token refresh support #53668
Authorization
  • Explicitly require that delegate API keys have no privileges #53647
CCR
  • Handle no such remote cluster exception in ccr #53415 (issue: #53225)
Distributed
Engine
Features/ILM+SLM
  • Fix null config in SnapshotLifecyclePolicy.toRequest #53328 (issues: #44465, #53171)
  • ILM Freeze step retry when not acknowledged #53287
Features/Ingest
  • Fix ingest pipeline _simulate api with empty docs never returns a res… #52937 (issue: #52833)
Features/Java High Level REST Client
  • Add unsupported parameters to HLRC search request #53745
  • Fix AbstractBulkByScrollRequest slices parameter via Rest #53068 (issue: #53044)
Features/Watcher
  • Disable Watcher script optimization for stored scripts #53497 (issue: #40212)
Infra/Core
  • Avoid self-suppression on grouped action listener #53262 (issue: #53174)
Infra/Packaging
  • Handle special characters and spaces in JAVA_HOME path in elasticsearch-service.bat #52676
Infra/Plugins
Machine Learning
  • Fix a bug in the calculation of the minimum loss leaf values for classification #1032
Network
  • Invoke response handler on failure to send #53631
SQL
  • 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)
Search
  • 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)

Upgradesedit

Infra/Core
  • Update jackson-databind to 2.8.11.6 #53522 (issue: #45225)