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Elasticsearch version 8.17.9

IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Elasticsearch version 8.17.9

Also see Breaking changes in 8.17.

Bug fixes

Aggregations

Aggs: Add cancellation checks to FilterByFilter aggregator #130452

ES|QL

Avoid O(N^2) in VALUES with ordinals grouping #130576
Avoid dropping aggregate groupings in local plans #129370 (issues: #129811, #128054)
Fix BytesRef2BlockHash #130705

Search

Fix msearch request parsing when index expression is null #130776 (issue: #129631)

Upgrades

Packaging

Update default docker base image to Ubuntu 24.04 #130277

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