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WARNING: Version 5.5 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.

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Elastic Docs ›Elasticsearch Reference [5.5] ›Release Notes

5.1.1 Release Notes

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5.1.1 Release Notes

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Also see Breaking changes in 5.1.

Breaking changes

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Aliases
  • Validate alias names the same as index names #20771 (issue: #20748)
REST

Breaking Java changes

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Discovery
  • Remove pluggability of ElectMasterService #21031
Exceptions
  • Remove IndexTemplateAlreadyExistsException and IndexShardAlreadyExistsException #21539 (issue: #21494)
  • Replace IndexAlreadyExistsException with ResourceAlreadyExistsException #21494
  • Backport: Replace IndexAlreadyExistsException with ResourceAlreadyExistsException #21601 (issue: #21494)
Internal
  • Pass executor name to request interceptor to support async intercept calls #21089
Network
  • Unguice Transport and friends #20526
Plugins
  • Plugins: Remove support for onModule #21416

Deprecations

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Analysis
  • Deprecating request parameters of _analyze API in 5.x #20686 (issue: #20246)
CRUD
Core
  • Add deprecation logging for users that explicitly opt in for the default fs type. #21617
Mapping
  • Deprecate timestamp and ttl on index requests. #21826 (issue: #21670)
Query DSL
  • Add deprecation logging for lenient boolean queries #21570 (issue: #21555)
  • Add deprecation logging message for fuzzy query #20993 (issue: #15760)
Search
  • Deprecate ignored type parameter in search_shards api #21730 (issue: #21688)
Settings
  • Add deprecation logging for the case that store throttling is used. #21618

New features

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Analysis
CAT API
  • Provides a cat api endpoint for templates. #20545 (issue: #20467)
Query DSL
  • Add "all fields" execution mode to simple_query_string query #21341 (issues: #19784, #20925)
  • Add support for quote_field_suffix to simple_query_string. #21060 (issue: #18641)
  • Add "all field" execution mode to query_string query #20925 (issue: #19784)
Reindex API
  • Add automatic parallelization support to reindex and friends #20767 (issue: #20624)

Enhancements

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Aggregations
  • Rescorer should be applied in the TopHits aggregation #20978 (issue: #19317)
Allocation
  • Balance step in BalancedShardsAllocator for a single shard #21103
  • Process more expensive allocation deciders last #20724 (issue: #12815)
  • Separates decision making from decision application in BalancedShardsAllocator #20634
  • Split allocator decision making from decision application #20431 (issue: #20347)
Analysis
  • Remove AnalysisService and reduce it to a simple name to analyzer mapping #20627 (issues: #19827, #19828)
CAT API
  • Adding built-in sorting capability to _cat apis. #20658 (issue: #16975)
  • Add health status parameter to cat indices API #20393
Cache
Cluster
  • Cache successful shard deletion checks #21438
Core
  • Reduce memory pressure when sending large terms queries. #21776
  • Install a security manager on startup #21716
  • Log node ID on startup #21673
  • Ensure source filtering automatons are only compiled once #20857 (issue: #20839)
  • Improve scheduling fairness when batching cluster state changes with equal priority #20775 (issue: #20768)
  • Do not log full bootstrap checks exception #19989
Exceptions
Geo
Ingest
Internal
  • Rename ClusterState#lookupPrototypeSafe to lookupPrototype and remove "unsafe" unused variant #21686
  • ShardActiveResponseHandler shouldn’t hold to an entire cluster state #21470 (issue: #21394)
  • Remove unused ClusterService dependency from SearchPhaseController #21421
  • Remove special case in case no action filters are registered #21251
  • Use TimveValue instead of long for CacheBuilder methods #20887
  • Remove SearchContext#current and all it’s threadlocals #20778 (issue: #19341)
Java REST Client
  • Provide error message when rest request path is null #21233 (issue: #21232)
Logging
  • Log failure to connect to node at info instead of debug #21809 (issue: #6468)
  • Truncate log messages from the end #21609 (issue: #21602)
  • Logging shutdown hack #20389 (issue: #20304)
  • Disable console logging #20387
Mapping
  • Create the QueryShardContext lazily in DocumentMapperParser. #21287
Network
  • Grant Netty permission to read system somaxconn #21840
  • Lazy resolve unicast hosts #21630 (issues: #14441, #16412)
  • Fix handler name on message not fully read #21478
  • Handle rejected pings on shutdown gracefully #20842
Packaging
  • Add empty plugins dir for archive distributions #21204 (issue: #20342)
  • Make explicit missing settings for Windows service #21200 (issue: #18317)
  • Change permissions on config files #20966
Plugin Lang Painless
  • Add Debug.explain to painless #21723 (issue: #20263)
  • Implement the ?: operator in painless #21506
  • In painless suggest a long constant if int won’t do #21415 (issue: #21313)
  • Support decimal constants with trailing [dD] in painless #21412 (issue: #21116)
  • Implement reading from null safe dereferences #21239
  • Painless negative offsets #21080 (issue: #20870)
Plugin Repository S3
  • Make the default S3 buffer size depend on the available memory. #21299
Plugins
  • Clarify that plugins can be closed #21669
  • Plugins: Convert custom discovery to pull based plugin #21398
  • Removing plugin that isn’t installed shouldn’t trigger usage information #21272 (issue: #21250)
  • Remove pluggability of ZenPing #21049
  • Make UnicastHostsProvider extension pull based #21036
Query DSL
  • Using ObjectParser in MatchAllQueryBuilder and IdsQueryBuilder #21273
  • Expose splitOnWhitespace in Query String Query #20965 (issue: #20841)
  • Throw error if query element doesn’t end with END_OBJECT #20528 (issue: #20515)
  • Remove lowercase_expanded_terms and locale from query-parser options. #20208 (issue: #9978)
Reindex API
  • Make reindex-from-remote ignore unknown fields #20591 (issue: #20504)
Scripting
  • Wrap VerifyError in ScriptException #21769
  • Support binary field type in script values #21484 (issue: #14469)
  • Mustache: Add {{#url}}{{/url}} function to URL encode strings #20838
  • Expose ctx._now in update scripts #20835 (issue: #17895)
Search
  • Add indices and filter information to search shards api output #21738 (issue: #20916)
  • remove pointless catch exception in TransportSearchAction #21689
  • Optimize query with types filter in the URL (t/t/_search) #20979
  • Makes search action cancelable by task management API #20405
Search Templates
  • Add profile and explain parameters to template API #20451
Snapshot/Restore
  • Abort snapshots on a node that leaves the cluster #21084 (issue: #20876)
Stats
  • Remove load average leniency #21380
  • Strengthen handling of unavailable cgroup stats #21094 (issue: #21029)
  • Add basic cgroup CPU metrics #21029
Task Manager
  • Add search task descriptions #21740
Tribe Node

Bug fixes

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Aggregations
  • Rewrite Queries/Filter in FilterAggregationBuilder and ensure client usage marks query as non-cachable #21303 (issue: #21301)
  • Percentiles bucket fails for 100th percentile #21218
  • Thread safety for scripted significance heuristics #21113 (issue: #18120)
Allocation
  • Allow master to assign primary shard to node that has shard store locked during shard state fetching #21656 (issue: #19416)
Analysis
  • Can load non-PreBuiltTokenFilter in Analyze API #20396
CAT API
  • Consume full_id request parameter early #21270 (issue: #21266)
Cache
  • Fix the request cache keys to not hold references to the SearchContext. #21284
Circuit Breakers
  • ClusterState publishing shouldn’t trigger circuit breakers #20986 (issues: #20827, #20960)
Cluster
  • Remove cluster update task when task times out #21578 (issue: #21568)
Core
  • Add a StreamInput#readArraySize method that ensures sane array sizes #21697
  • Use a buffer to do character to byte conversion in StreamOutput#writeString #21680 (issue: #21660)
  • Fix ShardInfo#toString #21319
  • Protect BytesStreamOutput against overflows of the current number of written bytes. #21174 (issue: #21159)
  • Return target index name even if _rollover conditions are not met #21138
  • .es_temp_file remains after system crash, causing it not to start again #21007 (issue: #20992)
Dates
  • Fix time zone rounding edge case for DST overlaps #21550 (issue: #20833)
Engine
  • Die with dignity on the Lucene layer #21721 (issue: #19272)
  • Fix InternalEngine#isThrottled to not always return false. #21592
  • Retrying replication requests on replica doesn’t call onRetry #21189 (issue: #20211)
Highlighting
  • Fix FiltersFunctionScoreQuery highlighting #21827
  • Fix highlighting on a stored keyword field #21645 (issue: #21636)
Index APIs
  • Validate the _rollover target index name early to also fail if dry_run=true #21330 (issue: #21149)
Index Templates
  • Fix integer overflows when dealing with templates. #21628 (issue: #21622)
Ingest
  • fix trace_match behavior for when there is only one grok pattern #21413 (issue: #21371)
  • Stored scripts and ingest node configurations should be included into a snapshot #21227 (issue: #21184)
Inner Hits
  • Skip adding a parent field to nested documents. #21522 (issue: #21503)
Internal
  • Rethrow ExecutionException from the loader to concurrent callers of Cache#computeIfAbsent #21549
  • Restore thread’s original context before returning to the ThreadPool #21411
  • Fix NPE in SearchContext.toString() #21069
  • Source filtering should treat dots in field names as sub objects. #20736 (issue: #20719)
Java API
  • Transport client: Fix remove address to actually work #21743
  • Add a HostFailureListener to notify client code if a node got disconnected #21709 (issue: #21424)
  • Fix InternalSearchHit#hasSource to return the proper boolean value #21441 (issue: #21419)
  • Null checked for source when calling sourceRef #21431 (issue: #19279)
  • ClusterAdminClient.prepareDeletePipeline method should accept pipeline id to delete #21228
Java REST Client
  • Rest client: don’t reuse the same HttpAsyncResponseConsumer across multiple retries #21378
Logging
  • Do not prematurely shutdown Log4j #21519 (issue: #21514)
  • Assert status logger does not warn on Log4j usage #21339
  • Fix logger names for Netty #21223 (issue: #20457)
Mapping
  • Fail to index fields with dots in field names when one of the intermediate objects is nested. #21787 (issue: #21726)
  • Uncommitted mapping updates should not efect existing indices #21306 (issue: #21189)
Network
  • DiscoveryNode and TransportAddress should preserve host information #21828
  • Die with dignity on the network layer #21720 (issue: #19272)
  • Prevent double release in TcpTransport if send listener throws an exception #20880
Packaging
  • Set vm.max_map_count on systemd package install #21507
  • Export ES_JVM_OPTIONS for SysV init #21445 (issue: #21255)
  • Debian: configure start-stop-daemon to not go into background #21343 (issues: #12716, #21300)
  • Generate POM files with non-wildcard excludes #21234 (issue: #21170)
Plugin Lang Painless
  • Test fix for def equals in Painless #21945 (issue: #21801)
  • Fix a VerifyError bug in Painless #21765
  • Fix Lambdas in Painless to be Able to Use Top-Level Variables Such as params and doc #21635 (issues: #20869, #21479)
Plugin Mapper Attachment
  • NPE is raised when defining a non existing type within attachments type #21848
Query DSL
  • Fixes date range query using epoch with timezone #21542 (issue: #21501)
  • Allow overriding all-field leniency when lenient option is specified #21504 (issues: #20925, #21341)
  • Max score should be updated when a rescorer is used #20977 (issue: #20651)
REST
  • Strict level parsing for indices stats #21577 (issue: #21024)
  • The routing query string param is supported by mget but was missing from the rest spec #21357
  • fix thread_pool_patterns path variable definition #21332
  • ensure the XContentBuilder is always closed in RestBuilderListener #21124
  • XContentBuilder: Avoid building self-referencing objects #20550 (issues: #19475, #20540)
Reindex API
  • Ignore IllegalArgumentException with assertVersionSerializable #21409 (issues: #20767, #21350)
  • Bump reindex-from-remote’s buffer to 200mb #21222 (issue: #21185)
  • Fix reindex-from-remote for parent/child from <2.0 #21070 (issue: #21044)
Search
  • Fix match_phrase_prefix on boosted fields #21623 (issue: #21613)
  • Respect default search timeout #21599 (issues: #12211, #21595)
  • Remove LateParsingQuery to prevent timestamp access after context is frozen #21328 (issue: #21295)
Search Templates
  • SearchTemplateRequest to implement CompositeIndicesRequest #21865 (issue: #21747)
Settings
  • Handle spaces in action.auto_create_index gracefully #21790 (issue: #21449)
  • Fix settings diff generation for affix and group settings #21788
  • Don’t reset non-dynamic settings unless explicitly requested #21646 (issue: #21593)
Snapshot/Restore
  • Fixes shard level snapshot metadata loading when index-N file is missing #21813
  • Ensures cleanup of temporary index-* generational blobs during snapshotting #21469 (issue: #21462)
  • Fixes get snapshot duplicates when asking for _all #21340 (issue: #21335)
  • Keep snapshot restore state and routing table in sync (5.x backport) #21131 (issue: #20836)
Task Manager
  • Task cancellation command should wait for all child nodes to receive cancellation request before returning #21397 (issue: #21126)
Tribe Node

Upgrades

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Core
  • Upgrade to lucene-6.3.0. #21464
Dates
Logging
Network
  • Upgrade to Netty 4.1.6 #21051
Plugin Ingest Attachment
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