Sourced from github.com/elastic/go-elasticsearch/v9's releases.

v9.4.0

9.4.0 (2026-05-05)

⚠ BREAKING CHANGES

• esutil: default Client to elasticsearch.NewBase in NewBulkIndexer
• esapi: params previously typed *int on ~25 esapi endpoints are now *int64 to match the spec long type. Call sites passing untyped integer literals keep compiling; call sites passing a typed int variable need an int64(...) cast.

Features

• Add AutoDrainBody option for automatic response body draining (#1373) (4a7dfdf)
• client: Add (*Client).ToTyped() conversion method (#1449) (6d5f630)
• Deprecate legacy Config-based constructors (#1378) (30dad2d)
• esutil: Add Flush method to BulkIndexer for explicit flush-and-wait (#1360) (e61767b)
• esutil: Add FlushJitter option to BulkIndexer (#1442) (5e9828b)
• esutil: Default Client to elasticsearch.NewBase in NewBulkIndexer (60905b7)
• Typed API: Update 9.4 client to spec fcf537e (#1455) (4aa8c6e)
• Typed API: Update client from spec 836fca8 (27b32e4)

Bug Fixes

• esapi: Regenerate esapi with *int64 for long-typed params (#1402) (84b4bf8)
• gen: Map spec long to *int64 for esapi params (#1394) (34db2b1)
• gen: Support *int64 fields in gen-tests output (#1420) (b8e1973)

Sourced from github.com/elastic/go-elasticsearch/v9's changelog.

9.4.0 (2026-05-05)

⚠ BREAKING CHANGES

• esutil: default Client to elasticsearch.NewBase in NewBulkIndexer
• esapi: params previously typed *int on ~25 esapi endpoints are now *int64 to match the spec long type. Call sites passing untyped integer literals keep compiling; call sites passing a typed int variable need an int64(...) cast.

Features

• Add AutoDrainBody option for automatic response body draining (#1373) (4a7dfdf)
• client: Add (*Client).ToTyped() conversion method (#1449) (6d5f630)
• Deprecate legacy Config-based constructors (#1378) (30dad2d)
• esutil: Add Flush method to BulkIndexer for explicit flush-and-wait (#1360) (e61767b)
• esutil: Add FlushJitter option to BulkIndexer (#1442) (5e9828b)
• esutil: Default Client to elasticsearch.NewBase in NewBulkIndexer (60905b7)
• Typed API: Update 9.4 client to spec fcf537e (#1455) (4aa8c6e)
• Typed API: Update client from spec 836fca8 (27b32e4)

Bug Fixes

• esapi: Regenerate esapi with *int64 for long-typed params (#1402) (84b4bf8)
• gen: Map spec long to *int64 for esapi params (#1394) (34db2b1)
• gen: Support *int64 fields in gen-tests output (#1420) (b8e1973)

• 3dde3f3 chore(9.4): release 9.4.0 (#1356)
• 60905b7 feat!(esutil): default Client to elasticsearch.NewBase in NewBulkIndexer (#1467)
• 6e5029c chore(9.4): update changelog (#1462)
• 2484cfd chore(esapi): update 9.4 client from spec b732c10 (#1454)
• 4aa8c6e feat(Typed API): update 9.4 client to spec fcf537e (#1455)
• 6d5f630 feat(client): add (*Client).ToTyped() conversion method (#1449)
• 5e9828b feat(esutil): add FlushJitter option to BulkIndexer (#1442)
• 84b4bf8 fix(esapi): regenerate esapi with *int64 for long-typed params (#1402)
• b8e1973 fix(gen): support *int64 fields in gen-tests output (#1420)
• 43bdef5 [Backport 9.4] fix(gen): sort required URL params deterministically (#1411)
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