Elasticsearch version 7.6.2

Also see Breaking changes in 7.6.

Breaking changes

Authorization

  • Creation of derived API keys (keys created by existing keys) now requires explicit “no privileges” configuration #53647, CVE-2020-7009

Bug fixes

Allocation

  • Improve performance of shards limits decider #53577 (issue: #53559)

Authentication

  • Fix potential bug in concurrent token refresh support #53668

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)

Upgrades

Infra/Core