[DOCS] Document how reindex work in CPS by szabosteve · Pull Request #144016 · elastic/elasticsearch

szabosteve · 2026-03-11T12:55:46Z

Overivew

Relates to https://github.com/elastic/docs-content-internal/issues/31
This PR documents how reindexing works in CPS.

github-actions · 2026-03-11T12:57:18Z

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Summary: 3 suggestions found

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File	Line	Rule	Message
docs/reference/elasticsearch/rest-apis/reindex-indices.md	790	Elastic.Wordiness	Consider using 'impossible' instead of 'not possible'.
docs/reference/elasticsearch/rest-apis/reindex-indices.md	799	Elastic.Wordiness	Consider using 'all' instead of 'all of '.
docs/reference/elasticsearch/rest-apis/reindex-indices.md	837	Elastic.Wordiness	Consider using 'all' instead of 'all of '.

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github-actions · 2026-03-11T13:02:16Z

🔍 Preview links for changed docs

docs/reference/elasticsearch/rest-apis/reindex-indices.md

github-actions · 2026-03-11T13:02:18Z

ℹ️ Important: Docs version tagging

👋 Thanks for updating the docs! Just a friendly reminder that our docs are now cumulative. This means all 9.x versions are documented on the same page and published off of the main branch, instead of creating separate pages for each minor version.

We use applies_to tags to mark version-specific features and changes.

Expand for a quick overview

When to use applies_to tags:

✅ At the page level to indicate which products/deployments the content applies to (mandatory)
✅ When features change state (e.g. preview, ga) in a specific version
✅ When availability differs across deployments and environments

What NOT to do:

❌ Don't remove or replace information that applies to an older version
❌ Don't add new information that applies to a specific version without an applies_to tag
❌ Don't forget that applies_to tags can be used at the page, section, and inline level

🤔 Need help?

Check out the cumulative docs guidelines
Reach out in the #docs Slack channel

quux00

A few suggestions for changes.

docs/reference/elasticsearch/rest-apis/reindex-indices.md

ywangd

I left a couple comments

docs/reference/elasticsearch/rest-apis/reindex-indices.md

elasticsearchmachine · 2026-03-12T14:42:57Z

Pinging @elastic/developer-docs (:Docs/Dev)

ywangd

LGTM with one comment

docs/reference/elasticsearch/rest-apis/reindex-indices.md

PeteGillinElastic

Thanks for this. I left a few comments/suggestions/questions. Nothing major.

docs/reference/elasticsearch/rest-apis/reindex-indices.md

szabosteve · 2026-03-16T08:25:55Z

Thank you for your review and suggestions, @PeteGillinElastic! I addressed them in my latest commit, except the one about the examples. You are right that they are very similar, but I'd keep both for self-contained reading. Let me know if you disagree or if I missed anything. Thank you in advance!

kosabogi

LGTM

docs/reference/elasticsearch/rest-apis/reindex-indices.md

pete-naylor

Thank you!

quux00

Two change suggestions left. After those, I can approve.

docs/reference/elasticsearch/rest-apis/reindex-indices.md

PeteGillinElastic

Belatedly getting back to this... Thanks for your response to my last round of comments. I have one more optional nit, otherwise I'm happy when everyone else is happy.

docs/reference/elasticsearch/rest-apis/reindex-indices.md

quux00

LGTM

docs/reference/elasticsearch/rest-apis/reindex-indices.md

shainaraskas

looks good to me.

should this content be surfaced in this section?

https://www.elastic.co/docs/manage-data/migrate

see this PR for the future structure

elastic/docs-content#5244

* upstream/main: (146 commits) Revert "[Native] Gradle-related tweaks to improve handling of the simdvec native library (elastic#144539)" Fix ArrayIndexOutOfBoundsException in fetch phase with partial results (elastic#144385) ESQL: Correctly manage NULL data type for SUM (elastic#144942) [ESQL] Fixes GroupedTopNBenchmark not executing (elastic#144944) Fix reader context leak when query response serialization fails (elastic#144708) Validate individual offset values in BULK_OFFSETS bounds checks (elastic#144643) Merge main21 source set into main in simdvec (elastic#144921) [TEST] Unmute TsidExtractingIdFieldMapperTests (elastic#144848) [Native] Gradle-related tweaks to improve handling of the simdvec native library (elastic#144539) Fix `ThreadedActionListenerTests#testRejectionHandling` (elastic#144795) Add new DLM Frozen Tier Transition execution plugin and service (elastic#144595) Prometheus: execute query_range via parsed EsqlStatement plan (elastic#144416) Investigate `testBulkIndexingRequestSplitting` failure (elastic#144766) Add test utility for wrapping directories in FilterDirectory layer (elastic#143563) Fix ES|QL decay tests with negative scale (elastic#144657) Fix circuit breaker leak in percolator query construction (elastic#144827) Use XPerFieldDocValuesFormat in AbstractTSDBSyntheticIdCodec (elastic#144744) [DOCS] Document how reindex work in CPS (elastic#144016) Fix Int4 vector library tests failing on Java 21 (elastic#144830) [DiskBBQ] Fix index sorting on flush (elastic#144938) ...

* [CPS] Document how reindex work in CPS. * Add CPS subs. * More edits. * Addresses feedback. * Address feedback. * Refine content. * Address feedback. * More edits. * Address feedback. * Clarify authentication.

[CPS] Document how reindex work in CPS.

da3d145

szabosteve requested a review from quux00 March 11, 2026 12:56

elasticsearchmachine added the v9.4.0 label Mar 11, 2026

szabosteve added >docs General docs changes :Docs/Dev Docs team for PDC:Search concepts (search, analytics, timeseries, ML, dev tools) and removed v9.4.0 labels Mar 11, 2026

Add CPS subs.

7dafd19

szabosteve and others added 2 commits March 11, 2026 14:08

More edits.

a723d9a

Merge branch 'main' into szabosteve/cps-reindex

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ywangd reviewed Mar 11, 2026

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Addresses feedback.

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szabosteve requested review from quux00 and ywangd March 12, 2026 14:42

szabosteve marked this pull request as ready for review March 12, 2026 14:42

szabosteve requested review from a team as code owners March 12, 2026 14:42

Merge branch 'main' into szabosteve/cps-reindex

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szabosteve added the v9.4.0 label Mar 12, 2026

ywangd approved these changes Mar 13, 2026

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naj-h requested review from naj-h and pete-naylor March 13, 2026 15:39

PeteGillinElastic reviewed Mar 13, 2026

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Address feedback.

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Address feedback.

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szabosteve requested review from kosabogi, pete-naylor and quux00 March 18, 2026 14:52

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szabosteve and others added 2 commits March 19, 2026 09:05

More edits.

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Merge branch 'main' into szabosteve/cps-reindex

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szabosteve requested a review from quux00 March 19, 2026 08:10

Merge branch 'main' into szabosteve/cps-reindex

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szabosteve added 2 commits March 20, 2026 15:27

Address feedback.

6282894

Clarify authentication.

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szabosteve requested a review from n1v0lg March 20, 2026 14:52

shainaraskas approved these changes Mar 25, 2026

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szabosteve merged commit 11d03ab into main Mar 26, 2026
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szabosteve deleted the szabosteve/cps-reindex branch March 26, 2026 08:41

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szabosteve commented Mar 11, 2026

Overivew

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ℹ️ Important: Docs version tagging

When to use applies_to tags:

What NOT to do:

🤔 Need help?

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