Elasticsearch version 8.12.2
Also see Breaking changes in 8.12.
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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.
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Application
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Fix bug in
rule_query where text_expansion errored because it was not rewritten #105365
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[Connectors API] Fix bug with crawler configuration parsing and
sync_now flag #105024
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Authentication
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Validate settings before reloading JWT shared secret #105070
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Downsampling
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Downsampling better handle if source index isn’t allocated and fix bug in retrieving last processed tsid #105228
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ES|QL
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ESQL: Push CIDR_MATCH to Lucene if possible #105061 (issue: #105042)
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ES|QL: Fix exception handling on
date_parse with wrong date pattern #105048 (issue: #104124)
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Indices APIs
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Always show
composed_of field for composable index templates #105315 (issue: #104627)
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Ingest Node
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Backport stable
ThreadPool constructor from LogstashInternalBridge #105165
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Harden index mapping parameter check in enrich runner #105096
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Machine Learning
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Fix handling of
ml.config_version node attribute for nodes with machine learning disabled #105066
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Fix handling surrogate pairs in the XLM Roberta tokenizer #105183 (issues: #104626, #104981)
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Inference service should reject tasks during shutdown #105213
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Network
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Close
currentChunkedWrite on client cancel #105258
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Fix leaked HTTP response sent after close #105293 (issue: #104651)
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Fix race in HTTP response shutdown handling #105306
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Search
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Field-caps should read fields from up-to-dated shards #105153 (issue: #104809)
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Snapshot/Restore
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Finalize all snapshots completed by shard snapshot updates #105245 (issue: #104939)
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Transform
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IdentityProvider
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Include user’s privileges actions in IdP plugin
_has_privileges request #104026