WARNING: Version 2.2 of Elasticsearch has passed its EOL date.

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2.1.1 Release Notes

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2.1.1 Release Notes

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Also see Breaking changes in 2.1.

Enhancements

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Aggregations

[Children agg] fix bug that prevented all child docs from being evaluated #15457

Core

If we can’t get a MAC address for the node, use a dummy one #15266 (issue: #10099)
Simplify shard inactive logging #15259 (issue: #15252)
Simplify IndexingMemoryController#checkIdle #15252 (issue: #15251)
IndexingMemoryController should not track shard index states #15251 (issues: #13918, #15225)

Index Templates

Disallow index template pattern to be the same as an alias name #15184 (issue: #14842)

Mapping

throw exception if a copy_to is within a multi field #15213 (issues: #10802, #14946)
Register field mappers at the node level. #14896 (issue: #14828)

Bug fixes

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Index APIs

Field stats: Index constraints should remove indices in the response if the field to evaluate is empty #14868

Internal

Throw a meaningful error when loading metadata and an alias and index have the same name #14842 (issue: #14706)

Mapping

Multi field names may not contain dots #15118 (issue: #14957)

Search

Fix NPE when a segment with an empty cache gets closed. #15202 (issue: #15043)

Translog

Fail and close translog hard if writing to disk fails #15420 (issue: #15333)
Prevent writing to closed channel if translog is already closed #15012 (issue: #14866)
Don’t delete temp recovered checkpoint file it was renamed #14872 (issue: #14695)

Tribe Node

Fix tribe node to load config file for internal client nodes #15300 (issues: #13383, #14573)

Regressions

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Query DSL

RangeQueryParser should accept _name in inner field #15394 (issue: #15306)

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