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Elasticsearch version 6.8.1

Elasticsearch version 6.8.1

Also see Breaking changes in 6.8.

Enhancements

Java High Level REST Client

Added param ignore_throttled=false when indicesOptions.ignoreThrottle #42393 (issue: #42358)

Bug fixes

Allocation

Avoid bubbling up failures from a shard that is recovering #42287 (issues: #30919, #40107)

Authentication

Only index into "doc" type in security index #42563 (issue: #42562)

Distributed

Do not use ifSeqNo for update requests on mixed cluster #42596 (issue: #42561)
Avoid unnecessary persistence of retention leases #42299
Execute actions under permit in primary mode only #42241 (issues: #40386, #41686)

Engine

Account soft deletes for committed segments #43126 (issue: #43103)

Infra/Core

scheduleAtFixedRate would hang #42993 (issue: #38441)
Only ignore IOException when fsyncing on dirs #42972 (issue: #42950)
Deprecation info for joda-java migration #41956 (issue: #42010)

Machine Learning

Fix possible race condition when closing an opening job #42506

Mapping

Fix possible NPE in put mapping validators #43000 (issue: #37675)

Percolator

Fixed ignoring name parameter for percolator queries #42598 (issue: #40405)
Exclude nested documents #42554 (issue: #42361)

Recovery

Recovery with syncId should verify seqno infos #41265

Reindex

Remote reindex failure parse fix #42928

Rollup

Fix max boundary for rollup jobs that use a delay #42158

SQL

Fix wrong results when sorting on aggregate #43154 (issue: #42851)
Cover the Integer type when extracting values from _source #42859 (issue: #42858)

Search

SearchRequest#allowPartialSearchResults does not handle successful retries #43095 (issue: #40743)
Fix auto fuzziness in query_string query #42897
Wire query cache into sorting nested-filter computation #42906 (issue: #42813)
Fix sorting on nested field with unmapped #42451 (issue: #33644)
Fixes a bug in AnalyzeRequest.toXContent() #42795 (issues: #39670, #42197)
Fix concurrent search and index delete #42621 (issue: #28053)

Snapshot/Restore

Fix Azure List by Prefix Bug #42713

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