Elasticsearch version 7.2.1edit
Also see Breaking changes in 7.2.
Enhancementsedit
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Infra/Core
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Infra/Plugins
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Do not checksum all bytes at once in plugin install #44649 (issue: #44545)
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Machine Learning
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Improve message when native controller cannot connect #43565 (issue: #42341)
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Introduce a setting for the process connect timeout #43234
Bug fixesedit
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Analysis
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Issue deprecation warnings for preconfigured delimited_payload_filter #43684 (issues: #26625, #43568)
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Authentication
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Fix credential encoding for OIDC token request #43808 (issue: #43709)
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Data Frame
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Reorder format priorities in dest mapping #43602
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Adjust error message #43455
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Size the GET stats search by number of Ids requested #43206 (issue: #43203)
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Distributed
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Fix DefaultShardOperationFailedException subclass xcontent serialization #43435 (issue: #43423)
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Engine
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AsyncIOProcessor preserve thread context #43729
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Features/CAT APIs
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Features/ILM
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Account for node versions during allocation in ILM Shrink #43300 (issue: #41879)
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Features/Indices APIs
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Infra/Packaging
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Restore setting up temp dir for windows service #44541
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Fix the bundled jdk flag to be passed through windows startup #43502
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Machine Learning
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Fix datafeed checks when a concrete remote index is present #43923
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Don’t persist model state at the end of lookback if the lookback did not generate any input #527 (issue: #519)
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Don’t write model size stats when job is closed without any input #516 (issue: #394)
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Mapping
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Prevent types deprecation warning for indices.exists requests #43963 (issue: #43905)
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Add include_type_name in indices.exitst REST API spec #43910 (issue: #43905)
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Fix index_prefix sub field name on nested text fields #43862 (issue: #43741)
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Network
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Reconnect remote cluster when seeds are changed #43379 (issue: #37799)
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SQL
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Fix NPE in case of subsequent scrolled requests for a CSV/TSV formatted response #43365 (issue: #43327)
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Increase hard limit for sorting on aggregates #43220 (issue: #43168)
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Search
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Fix wrong logic in
match_phrase query with multi-word synonyms #43941 (issue: #43308)
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Fix UOE on search requests that match a sparse role query #43668 (issue: #42857)
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Fix propagation of enablePositionIncrements in QueryStringQueryBuilder #43578 (issue: #43574)
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Fix round up of date range without rounding #43303 (issue: #43277)
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Security
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SecurityIndexSearcherWrapper doesn’t always carry over caches and similarity #43436