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Elasticsearch version 8.12.2

Elasticsearch version 8.12.2

Also see Breaking changes in 8.12.

Known issues

When upgrading clusters from version 8.11.4 or earlier, if your cluster contains non-master-eligible nodes, information about the new functionality of these upgraded nodes may not be registered properly with the master node. This can lead to some new functionality added since 8.12.0 not being accessible on the upgraded cluster. If your cluster is running on ECK 2.12.1 and above, this may cause problems with finalizing the upgrade. To resolve this issue, perform a rolling restart on the non-master-eligible nodes once all Elasticsearch nodes are upgraded. This issue is fixed in 8.15.0.

Bug fixes

Application

Fix bug in rule_query where text_expansion errored because it was not rewritten #105365
[Connectors API] Fix bug with crawler configuration parsing and sync_now flag #105024

Authentication

Validate settings before reloading JWT shared secret #105070

Downsampling

Downsampling better handle if source index isn’t allocated and fix bug in retrieving last processed tsid #105228

ES|QL

ESQL: Push CIDR_MATCH to Lucene if possible #105061 (issue: #105042)
ES|QL: Fix exception handling on date_parse with wrong date pattern #105048 (issue: #104124)

Indices APIs

Always show composed_of field for composable index templates #105315 (issue: #104627)

Ingest Node

Backport stable ThreadPool constructor from LogstashInternalBridge #105165
Harden index mapping parameter check in enrich runner #105096

Machine Learning

Fix handling of ml.config_version node attribute for nodes with machine learning disabled #105066
Fix handling surrogate pairs in the XLM Roberta tokenizer #105183 (issues: #104626, #104981)
Inference service should reject tasks during shutdown #105213

Network

Close currentChunkedWrite on client cancel #105258
Fix leaked HTTP response sent after close #105293 (issue: #104651)
Fix race in HTTP response shutdown handling #105306

Search

Field-caps should read fields from up-to-dated shards #105153 (issue: #104809)

Snapshot/Restore

Finalize all snapshots completed by shard snapshot updates #105245 (issue: #104939)

Transform

Do not log warning when triggering an ABORTING transform #105234 (issue: #105233)
Make _reset action stop transforms without force first #104870 (issues: #100596, #104825)

Enhancements

IdentityProvider

Include user’s privileges actions in IdP plugin _has_privileges request #104026

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