5.4.2 Release Notesedit

See Multi data path bug in Elasticsearch 5.3.0.

Also see Breaking changes in 5.4.

Enhancementsedit

Core
  • Explicitly reject duplicate data paths #25178
Packaging
  • Set number of processes in systemd unit file #24970 (issue: #20874)

Bug fixesedit

Aggregations
  • Terms aggregation should remap global ordinal buckets when a sub-aggregator is used to sort the terms #24941 (issue: #24788)
Analysis
  • PatternAnalyzer should lowercase wildcard queries when lowercase is true. #24967
Circuit Breakers
  • Checks the circuit breaker before allocating bytes for a new big array #25010 (issue: #24790)
Geo
Index APIs
  • Rollover max docs should only count primaries #24977 (issue: #24217)
Nested Docs
Network
  • Ensure pending transport handlers are invoked for all channel failures #25150
Packaging
  • When stopping via systemd only kill the JVM, not its control group #25195
Suggesters
  • Fix context suggester to read values from keyword type field #24200 (issue: #24129)