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Elasticsearch version 7.17.6

Also see Breaking changes in 7.17.

Known issues

Parsing a request when the last element in an array is filtered out (for instance using _source_includes) fails. This is due to a bug in Jackson parser. Fixed in Elasticsearch 8.6.1 (#91456)
The deprecated index.mapper.dynamic setting can break your cluster. It can only be set using the Update index settings API. Symptoms include nodes failing to start or shards failing to allocate. Do not use this setting in versions prior to 7.17.22. The bug is fixed in 7.17.22. (issue: #109160)

Bug fixes

Cluster Coordination

Improve rejection of ambiguous voting config name #89239

Geo

Fix potential circuit breaker leak on InternalGeoGrid #88273 (issue: #88261)
Geo_line aggregation returns a geojson point when the resulting line has only one point #89199 (issue: #85748)
Port fixed version of Lucene Tessellator into ES 7.17 #88213 (issue: #88014)
Sort ranges in geo_distance aggregation #89154 (issue: #89147)

Infra/Node Lifecycle

Fix message for stalled shutdown #89254

Infra/Scripting

Adjust date conversion for execution context in watcher compare condition #88467 (issue: #88408)

Ingest

Don’t ignore pipeline for upserts in bulk api #87719 (issue: #87131)

Java High Level REST Client

[7.17] Fix mount snapshot api ignoring unknown request parameter #89061 (issue: #75982)

Machine Learning

Improve trained model stats API performance #87978
Fix potential cause of classification and regression job failures #2385

Search

Fix validation of close_pit request #88702
Override bulk visit methods of exitable point visitor #82120
Reduce memory usage in field-caps responses #88042

Snapshot/Restore

Avoid capturing SnapshotsInProgress$Entry in queue #88707
Move Get Snapshots Serialization to Management Pool #83215
Report better error for GCS credentials load failure #89336

Stats

Discard intermediate results upon cancellation for stats endpoints #82685 (issue: #82337)

Transform

Execute _refresh separately from DBQ, with system permissions #88005 (issue: #88001)

Deprecations

Infra/Core

Set monitoring auth.password cluster settings deprecation level as critical #88351 (issue: #86022)

Enhancements

Authorization

Avoid loading authorized indices when requested indices are all concrete names #81237

Machine Learning

Improve accuracy of anomaly detection median estimation #2367 (issue: #2364)

Packaging

Change UBI docker user to elasticsearch #88262 (issue: #88218)

Performance

Warn about impact of large readahead on search #88007

Security

New setting to close idle connections in OIDC back-channel #87773

Upgrades

Packaging

Upgrade to OpenJDK 18.0.2+9. The JDK update pertains to a potential security vulnerability. Please see our security statement for more details. #88675 (issue: #88673)

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https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.17.6.html