Enhancements

• Allocation:
  • Avoid extra reroutes of delayed shards in RoutingService #12532 (issues: #12456, #12515)
• Packaging:
  • Shade joda-convert #13358 (issue: #13356)
• Query DSL:
  • Add a check if FieldMappers exists #12635 (issue: #12572)

Bug fixes

• Allocation:
  • Take relocating shard into consideration during awareness allocation #13512 (issue: #12551)
  • Take initializing shards into consideration during awareness allocation #12551 (issue: #12522)
  • Fix messaging about delayed allocation #12515 (issue: #12456)
• Internal:
  • Fix concurrency issue in PrioritizedEsThreadPoolExecutor. #12599
• Nested Docs:
  • Nested query should only use bitset cache for parent filter #13087
• Packaging:
  • Fix upgrade RPM script #12630 (issues: #12298, #12606)
• Plugins:
  • Plugin script: Fix ES_HOME with spaces #12508 (issue: #12504)
• Query DSL:
  • Do not track named queries that are null #12691 (issue: #12683)
  • multi_match query applies boosts too many times. #12294
• Recovery:
  • Rethrow exception during recovery finalization even if source is not broken #12667
• Snapshot/Restore:
  • Snapshot restore request should accept indices options #13357 (issues: #10744, #13335)
• Suggesters:
  • Prevent DirectCandidateGenerator to reuse an unclosed analyzer #12670