WARNING: Version 2.4 of Elasticsearch has passed its EOL date.

This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.

« 2.4.1 Release Notes 2.3.5 Release Notes »
Elastic Docs ›Elasticsearch Guide [2.4] ›Release Notes

2.4.0 Release Notes

edit

2.4.0 Release Notes

edit

Breaking changes

edit
Network
  • Single comma-delimited response header for multiple values #19872 (issue: #19841)

Deprecations

edit
Geo
  • Deprecate optimize_bbox on geodistance queries #20032 (issue: #20014)
  • Deprecate geohash parameters for geo_point parser #20030 (issue: #20009)
Mapping
  • Add deprecation logging for _timestamp and _ttl. #19031 (issue: #18980)
Query DSL
  • Deprecate soon-to-be-unsupported queries. #18376 (issue: #18276)
REST
Search
Settings
Snapshot/Restore
  • Adds deprecation notices on removed BlobContainer methods #19729 (issues: #18813, #19727)

New features

edit
Geo
Plugin Cloud AWS
Reindex API
  • Backport: Reindex’s throttling #18020

Enhancements

edit
Circuit Breakers
Cluster
Core
Dates
  • Improve TimeUnitRounding for edge cases and DST transitions #18589
Internal
  • Turn RestChannel into an interface #17643 (issue: #17133)
  • Require executor name when calling scheduleWithFixedDelay #17538
  • Implement available for all StreamInput classes #17218
Java API
  • Add created flag to IndexingOperationListener#postIndex #17340 (issue: #17333)
Logging
  • Add shardId and node name in search slow log #19949 (issue: #19735)
Mapping
  • Mappings: Allow to force dots in field names #19937
Network
  • Exclude admin / diagnostic requests from HTTP request limiting #18833 (issues: #17951, #18145)
  • Netty request/response tracer should wait for send #18500
  • Exclude specific transport actions from request size limit check #17951
  • Provide better error message when an incompatible node connects to a node #17182 (issue: #17090)
Packaging
  • Increase default max open files to 65536 #18041 (issue: #18040)
  • Allow configuring Windows service name, description and user #17312
Parent/Child
  • Allow adding additional child types that point to an existing parent type #18446 (issue: #17956)
Query DSL
REST
  • CORS handling triggered whether User-Agent is a browser or not #18283
Reindex API
  • Switch default batch size for reindex to 1000 #18340
Scripting
  • Mustache: Add util functions to render JSON and join array values #19153 (issue: #18856)
  • Compile each Groovy script in its own classloader #18975 (issue: #18918)

Bug fixes

edit
Aggregations
  • Fix potential AssertionError with include/exclude on terms aggregations. #19252 (issue: #18575)
  • Pass resolved extended bounds to unmapped histogram aggregator #19085 (issue: #19009)
  • Fix "key_as_string" for date histogram and epoch_millis/epoch_second format with time zone #19043 (issue: #19038)
  • Fix TimeUnitRounding for hour, minute and second units #18415 (issue: #18326)
  • Adds serialisation of sigma to extended_stats_bucket pipeline aggregation #17703 (issue: #17701)
  • ExtendedStatsAggregator should also pass sigma to emtpy aggs. #17388 (issue: #17362)
  • Prevents exception being raised when ordering by an aggregation which wasn’t collected #17379 (issue: #17225)
  • Setting other bucket on empty aggregation #17264 (issue: #16546)
Allocation
  • Rebalancing policy shouldn’t prevent hard allocation decisions #17698 (issues: #14057, #14259)
Analysis
  • Add Character.MODIFIER_SYMBOL to the list of symbol categories. #18402 (issue: #18388)
Bulk
  • Copy headers and context to individual requests inside a bulk #18816
CAT API
  • Fix merge stats rendering in RestIndicesAction #18720
  • Expand wildcards to closed indices in /_cat/indices #18545 (issues: #16419, #17395)
  • Fix column aliases in _cat/indices, _cat/nodes and _cat/shards APIs #17145 (issue: #17101)
CRUD
  • Prevent TransportReplicationAction to route request based on stale local routing table #19296 (issues: #16274, #19187)
Cluster
  • Fix block checks when no indices are specified #19047 (issue: #8105)
  • Cluster stats: fix memory available that is always set to 0 #17328 (issue: #17278)
Core
  • Throw exception if using a closed transport client #18722 (issue: #18708)
  • Fix misplaced cast when parsing seconds #18548 (issue: #18546)
  • Don’t try to compute completion stats on a reader after we already closed it #18094
Dates
  • Make sure TimeIntervalRounding is monotonic for increasing dates #19020
  • Fix invalid rounding value for TimeIntervalRounding close to DST transitions #18800
  • Fix problem with TimeIntervalRounding on DST end #18780
Highlighting
  • Plain highlighter should ignore parent/child queries #19616 (issue: #14999)
  • Let fast vector highlighter also extract terms from the nested query’s inner query. #19337 (issue: #19265)
  • Skip all geo point queries in plain highlighter #18495 (issue: #17537)
  • Exclude all but string fields from highlighting if wildcards are used… #18183 (issue: #17537)
Indexed Scripts/Templates
  • Don’t ignore custom sharding settings in create index request for .scripts index #18965 (issue: #18912)
Internal
  • Fix filtering of node ids for TransportNodesAction #18634 (issue: #18618)
Logging
  • Add missing index name to search slow log. #17818 (issue: #17025)
Mapping
  • Mapping updates on objects should propagate include_an_all. #20051
  • Mappings: Fix detection of metadata fields in documents #19765
  • Fix not_analyzed string fields to error when position_increment_gap is set #19510
  • Automatically created indices should honor index.mapper.dynamic. #19478 (issue: #17592)
  • Process dynamic templates in order. #18638 (issues: #18625, #2401)
  • Fix cross type mapping updates for boolean fields. #17882 (issues: #17879, #18740)
  • Fail if an object is added after a field with the same name. #17568 (issue: #17567)
Packaging
  • RESTART_ON_UPGRADE incorrectly named ES_RESTART_ON_UPGRADE in sysconfig #19976 (issue: #19950)
Percolator
  • Set the SC and QPC type always to .percolator in percolate api #19210 (issue: #19130)
  • Fixed NPE when percolator filter option is "empty". #18563 (issue: #6172)
Plugin Analysis Kuromoji
  • Prebuild Japanese Stop Words Token Filter #19816 (issue: #19814)
Plugin Cloud AWS
Plugin Cloud Azure
Plugin Cloud GCE
Query DSL
  • Make parsing of bool queries stricter #19052 (issue: #19034)
  • Fix NullPointerException in SimpleQueryParser when analyzing text produces a null query #18243 (issue: #18202)
  • Apply the default operator on analyzed wildcard in simple_query_string builder #17776
  • Apply the default operator on analyzed wildcard in query_string builder: #17711 (issue: #2183)
REST
  • Do not decode path when sending error #18477 (issue: #18476)
  • CORS should permit same origin requests #18278 (issue: #18256)
  • Allow CORS requests to work with HTTP compression enabled #18101 (issues: #18066, #18089)
  • Fixes reading of CORS pre-flight headers and methods #17525 (issue: #17523)
  • Fix OOM in AbstractXContentParser #15350 (issue: #15338)
Recovery
  • Backports Notify GatewayRecoveryListener on failure #17805
Reindex API
  • Make reindex and lang-javascript compatible #19933
Search
  • AllTermQuery must implement equals/hashCode. #20196 (issue: #20161)
  • Add ref-counting to SearchContext to prevent accessing already closed readers #20095 (issue: #20008)
  • Fix _only_nodes preferences #18483 (issues: #12546, #12700)
  • Speed up named queries. #18470
Snapshot/Restore
  • Handle indices=["_all"] when restoring a snapshot #18025
  • On restore, selecting concrete indices can select wrong index #17715
Stats
  • Fix sync flush total shards statistics #18766
Translog
  • Translog can delete valid .ckp file when views are closed after the translog #19035 (issue: #16495)
  • Call ensureOpen on Translog#newView() to prevent IllegalStateException #17191

Upgrades

edit
Core
  • Update jackson to version 2.8.1 (on 2.4 branch) #20011 (issue: #18939)
  • Upgrade lucene to 5.5.2 #19496
Dates
Internal
  • Update Jackson 2.6.2 → 2.6.6 (latest and final 2.6 patch) #18052
Network
  • Upgrade to netty 3.10.6.Final #19235
Plugin Cloud AWS
« 2.4.1 Release Notes 2.3.5 Release Notes »