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/ralph I didn't think this through fully in terms of the UI:

• The confirm changes modal says "type unmapped", but status "mapped". It should be filtered out from that view
• When setting the description on the schema tab, you need to select "map field" - this is weird. Instead it should be a different context menu action "edit description" to set the description in a different flyout. This should also be possible for inherited fields, not just fields on the current "level"
• The table doesn't show the description, there should be a column for it

Addressed the UI feedback:

Issue 1: Confirm changes modal showing unmapped type fields

• Modified getChanges() in schema_changes_review_modal.tsx to filter out fields with type === 'unmapped'
• These documentation-only fields don't affect ES mappings, so they no longer appear in the confirm modal

Issue 2: "Edit description" action

• Created new EditDescriptionFlyout component (flyout/edit_description_flyout.tsx) - a simple flyout for editing just the description
• Added "Edit description" action to all field statuses in field_actions.tsx:
  • Mapped fields: View, Edit, Edit description, Unmap
  • Unmapped status fields: View, Map, Edit description
  • Inherited fields: View, Edit description
• For inherited fields, shows a callout explaining that setting a description creates an override in the current stream

Issue 3: Description column not visible by default

• Added 'description' to DEFAULT_TABLE_COLUMN_NAMES in constants.ts

Testing

• Added unit tests for the confirm modal filtering logic (schema_changes_review_modal.test.ts)
• All existing tests pass
• TypeScript and lint validation pass

Written by cursor, wait for @flash1293 to chime in

/ralph

• the UI in the schema tab looks good, but saving with only unmapped fields is not actually saving them - it just sends fields: {} in the request to the server. Make sure that unmapped fields are only filtered out for display when it's about mapping only, not for actually making requests.
• When in the "Modified fields" tab in processing, goign through the "Edit description" flyout on an unmapped field seems to not retain the description. We need to make sure the description is kept around

I think in both places we need to trace through the control flow and make sure to not filter out the unmapped fields in the wrong places, since we need to keep the description around

Fixed both issues reported in #250785 (comment)

Root cause: When editing a description on an unmapped field, the EditDescriptionFlyout was preserving status: 'unmapped', which caused:

1. Schema tab issue: Field was filtered out by buildSchemaSavePayload() (filters by status === 'mapped') → sent fields: {} to server
2. Processing tab issue: detected_fields_editor.tsx called unmapField() for unmapped fields which recreated the field without the description

Fixes:

• EditDescriptionFlyout: When saving on an unmapped field, now sets status: 'mapped' and type: field.type ?? 'unmapped' (documentation-only)
• detected_fields_editor.tsx: Added check for meaningful updates (description or type: 'unmapped') on unmapped fields - calls mapField() instead of unmapField() to preserve the updates

Tests added:

• edit_description_flyout.test.tsx with 7 tests covering mapped, unmapped, and inherited field scenarios

Written by cursor, wait for @flash1293 to chime in

/ralph

• The "Inherited field override" modal has a broken icon
• When setting a description on an inherited field, it shows in the table but when clicking save it's not sent to the server and then disappears
• In the table "type: unmapped" fields with description are shown different than actually unmapped fields that are not mentioned in the definition:
  • In the "Type" column the former shows "Unmapped", while the latter shows ---- - it should always be -----
  • In the "status" column the former shows "Mapped", which is very confusing, it should show "Unmapped" like the latter
• For wired streams it's showing an alias for the type: unmapped field, this doesn't make any sense, unmapped fields don't have an automatic alias

Fixed the issues reported in the review comment:

1. Broken icon in "Inherited field override" modal

• Changed iconType="iInCircle" to iconType="info" in edit_description_flyout.tsx

2. Inherited field description not being saved

• Updated handleSave in edit_description_flyout.tsx to set status: 'mapped' for inherited fields when saving description
• This ensures the field gets included in buildSchemaSavePayload() which only sends status === 'mapped' fields

3. Inconsistent display of type: 'unmapped' fields

• Updated schema_editor_table.tsx to show ---- (EMPTY_CONTENT) in the Type column when field.type === 'unmapped'
• Added displayStatus variable that overrides status to 'unmapped' when field.type === 'unmapped'

4. Alias showing for unmapped fields

• Fixed by the same change - returning EMPTY_CONTENT for the type column prevents the FieldType component (which renders aliases) from being rendered

Tests added:

• Updated existing inherited field test to verify correct behavior
• Added 2 new tests for getDefinitionFields to document unmapped field handling

Written by cursor, wait for @flash1293 to chime in

/ralph

• It's still showing an alias-like entry in the list. E.g. if I have attributes.abc.def unmapped with a description, it will also show abc.def with the same description. It shouldn't do that, it shouldn't show this row at all.
• On the schema tab something is wrong with the logic that shows the footer bar to save changes - if you have descriptions, it's always showing
• Implicitly, this added the ability to unmap a field that is mapped on the parent (by setting type: unmapped). This shouldn't be allowed. Make sure it's part of the validation of the wired streams and also the "unmap/map field" context menu entries are not shown in the schema tab
• If a field has just a description, there shouldn't be an "Unmap field" context menu action
• If a field has a description, there should be a "Clear description" context menu action

Addressed all feedback items from the review comment:

1. Fixed alias-like entries for unmapped fields
Modified createAliasesForNamespacedFields in logs_layer.ts to skip fields with type: 'unmapped'. Documentation-only fields don't have ES mappings, so aliases shouldn't be created for them (e.g., attributes.abc.def unmapped no longer creates a fake abc.def alias entry).

2. Fixed footer bar always showing with descriptions
The pendingChangesCount calculation in use_schema_fields.ts was using a different comparison than isFieldUncommitted. Updated to use isFieldUncommitted for consistency, which properly handles field defaults like additionalParameters: {}, format: undefined, etc.

3. Fixed ability to unmap parent-mapped fields

• Added server-side validation in validateAncestorFields to throw MalformedFieldsError when attempting to set type: 'unmapped' on a field that has a real type in the parent stream
• Updated field_actions.tsx to hide "Unmap field" for mapped fields that override inherited fields, and hide "Map field"/"Map as geo field" for unmapped fields that have an inherited counterpart

4. Fixed misleading "Unmap field" for description-only fields
Added condition to hide "Unmap field" action when field.type === 'unmapped' since these are documentation-only entries with no actual ES mapping to unmap.

5. Added "Clear description" context menu action
Added a new "Clear description" action that appears for fields with a description, allowing users to remove the description entirely.

Test coverage added:

• logs_layer.test.ts: Test for unmapped fields not creating aliases
• validate_fields.test.ts: Tests for parent-mapped field validation
• field_actions.test.tsx: Comprehensive tests for all context menu action scenarios
• use_schema_fields.test.tsx: Regression test for pending changes count

Written by cursor, wait for @flash1293 to chime in

/ralph

and hide "Map field"/"Map as geo field" for unmapped fields that have an inherited counterpart

Actually, it should be allowed this way - you should be able to have type: unmapped on let's say logs.abc, then set a type: keyword for it on logs.abc.def, not just the other way around. Make sure it works like that

Addressed the feedback from the review comment:

Issue: The previous implementation hid "Map field"/"Map as geo field" for ANY unmapped field that has an inherited counterpart. But it should only hide these actions when the parent has a real ES mapping (keyword, date, etc.), not when the parent has type: 'unmapped'.

Expected behavior: You should be able to have type: unmapped on logs.abc, then set type: keyword for it on logs.abc.def - the child should be able to add a real mapping when the parent only has documentation.

Fixes:

1. Client-side (field_actions.tsx):

   • Changed isMappedInParent check to hasRealMappingInParent that excludes type: 'unmapped'
   • "Map field" and "Map as geo field" now show when parent has type: 'unmapped'
   • "Unmap field" still hidden when any inherited entry exists (to prevent removing documentation)

2. Server-side (validate_fields.ts):

   • Updated the "incompatible type" check to allow any type when parent has type: 'unmapped'
   • Child streams can now set real types (keyword, date, etc.) on fields that are documented-only in parents

Tests added:

• field_actions.test.tsx: Test for "Map field" showing when parent has type: 'unmapped'
• validate_fields.test.ts: Tests for allowing real types when parent has type: 'unmapped'

Written by cursor, wait for @flash1293 to chime in

/ralph

• When I'm on the schema tab an a mapped inherited field has a description, the bottom bar for saving is always showing even though I didn't change anything. This needs to be fixed
• Also, when a field has descriptions on multiple layers of the hierarchy, it shows multiple times, I guess because it's part of the inherited_fields and stream.ingest.wired.field at the same time, we need to consolidate here (the more specific description should win out)

Fixed the issues mentioned in the review comment:

Issue 1: Save bar showing on initial load with inherited field descriptions

• Root cause: When a field existed in both inherited_fields and wired.fields (e.g., when overriding a parent field to add a description), it appeared twice in the field list
• The isFieldUncommitted function compared the 'mapped' version against a potentially different 'inherited' version in stored fields

Issue 2: Duplicate fields showing when inherited and mapped

• Root cause: getDefinitionFields was combining fields from both sources without deduplication
• Fix: Added deduplication logic to filter out inherited fields that already exist in mapped fields (more specific wins)

Issue 3: ES simulation failing on keyword fields with descriptions

• Root cause: description property was included in the spread when building ES mapping properties, but ES doesn't recognize it
• Fix: Destructure and exclude description when building propertiesForSimulation

Changes:

• Modified getDefinitionFields() in use_schema_fields.ts to deduplicate fields
• Modified ES simulation route to filter out description before passing to ES
• Added regression tests for both deduplication and pending changes behavior

Written by cursor, wait for @flash1293 to chime in

/ralph

• Merge the "edit description" context action into the main "map field" flyout, and change the name from "Map field" to "Edit field". It should be possible to also pick "Unmapped" as field type, but if that's the case, you can only edit the description, nothing else
• If you "edit field" on an inherited field, you should only be able to change the description, nothing else

Addressed the latest review feedback (unify the edit UX + description-only restrictions):

• Removed the separate "Edit description" context action/flyout and routed everything through the main "Edit field" (SchemaEditorFlyout).
• Renamed "Map field" → "Edit field".
• Added description-only mode in the unified flyout:
  • Editing an inherited field: only description can be changed (type/format/advanced options/simulation hidden/disabled).
  • Selecting type = unmapped: only description can be changed.
• Kept "Clear description" behavior.

Also added/updated tests around the unified flyout behavior (schema_editor_flyout.test.tsx).

Commit: 9c7ecc186d2b

Addressed the feedback from #250785 (comment)

Problem: When users select "Unmapped" type with a description in wired streams, the system was still trying to run a field simulation with type: 'unmapped', which fails because this type represents a description-only override.

Changes:

• Updated the mappedFields filter in schema_changes_review_modal.tsx to exclude type === 'unmapped' from the fields simulation call
• Updated getMappingAffectingConfig() in getChanges() to return null for type === 'unmapped' fields, ensuring the confirmation modal isn't shown for description-only changes
• Added 5 new test cases for type: 'unmapped' handling scenarios

Behavior after changes:

• Fields with type: 'unmapped' are not sent to the fields_simulation API
• The confirmation modal is skipped entirely if all changes are description-only (type: 'unmapped')
• When there's a mix of real mapping changes and description-only changes, only the real mapping changes are simulated

Written by cursor, wait for @flash1293 to chime in

/ralph Update this PR with upstream/main and fix all conflicts.

Also there still seems to be an issue in the state management:

• GO to schema tab of wired stream
• Select unmapped field
• Select "unmapped" as type
• Provide description
• Save

POST /api/streams/logs.linux/_ingest errors because the type is literally sent as such:

{
    "lifecycle": {
        "inherit": {}
    },
    "processing": {
        "steps": []
    },
    "settings": {},
    "wired": {
        "fields": {
            "attributes.process.id": {
                "type": "unmapped",
                "description": "This is a test"
            }
        },
        "routing": []
    },
    "failure_store": {
        "inherit": {}
    }
}

We should remove "type: unmapped" from here as well - if the user picks it from the list, it just sets the type to undefined.

There is another issue - when mapping a field properly and adding a description and saving, the existing description (made on the current stream) of an inherited field is removed - it's probably filtered out when the PUT request is assembled. We need to make sure these are preserved. Example:

• Go to logs.android
• Set a description on trace_id
• Save - everything works
• Map a new field and add a description
• Save
• New field is saved, description on trace_id is lost

Changes Made

I've updated this PR with upstream/main and fixed the two bugs reported:

Bug Fix 1: 'unmapped' type being sent to server

When a user selected "Unmapped" from the type dropdown for an unmapped field and provided a description, the type was being sent as type: 'unmapped' which caused a server error.

Fix: In flyout/index.tsx, when staging a field:

• If the user selects "Unmapped" (rawType === 'unmapped'), treat it as undefined type
• This creates a doc-only override (description only) instead of a mapped field with invalid type
• Added a safety check in convertToFieldDefinitionConfig to throw if 'unmapped' type ever reaches that function

Bug Fix 2: Inherited field descriptions being lost on save

When an inherited field had a description override on the current stream, the description was being merged into the inherited field view (keeping status: 'inherited'). Then in buildSchemaSavePayload, only status === 'mapped' or status === 'unmapped' && hasDescription fields were persisted, causing inherited field description overrides to be lost.

Fix: In buildSchemaSavePayload in utils.ts:

• Built a map of inherited field descriptions from definition.inherited_fields
• Added a new branch: for status === 'inherited' fields with non-empty descriptions, compare against the inherited description
• If the description differs from the inherited one, it's a doc-only override on THIS stream and needs to be persisted

Unit Tests Added

• convertToFieldDefinitionConfig throws for type: 'unmapped'
• buildSchemaSavePayload preserves description overrides on inherited fields
• buildSchemaSavePayload does NOT persist inherited field description if it matches the inherited description

/ci

/ci-ralph

/ralph check the test failures of build 401306 and fix them

Build URL: https://buildkite.com/elastic/kibana-pull-request/builds/401306

Use ci/bk-build-info.sh 401306 to fetch detailed build failure information.

Fixed TypeScript errors from Build 401306

Addressed all the TypeScript errors that were causing the Check Types step to fail.

Root Cause

The code introduced 'unmapped' as a UI pseudo-type for description-only fields in wired streams, but this type wasn't properly added to SchemaFieldType. This caused cascade type errors across multiple components.

Changes Made

1. types.ts - Added 'unmapped' to SchemaFieldType with documentation clarifying it's a pseudo-type for UI purposes only

2. field_type.tsx - Updated component to use FieldTypeOption instead of FieldDefinitionConfig['type'] to properly include the unmapped pseudo-type

3. field_form_format.tsx - Updated typeSupportsFormat() to accept SchemaFieldType instead of FieldDefinitionConfig['type']

4. field_summary.tsx - Removed unused EuiSpacer import

5. logs_otel_layer.ts - Added null check for target field type when creating inherited fields, to handle doc-only fields gracefully

6. validate_fields.test.ts - Added missing streamName parameter to three test cases

7. detected_fields_editor.tsx - Removed dead code branch that was handling typeless mapped fields (since MappedSchemaField always has a type by definition)

8. utils.test.ts - Updated test assertions to properly narrow the IngestUpsertRequest union type

9. stream_enrichment_state_machine/utils.test.ts - Added missing create_snapshot_repository privilege to test fixture

All type checks and tests pass locally.

/ralph check the test failures of build 401368 and fix them

Build URL: https://buildkite.com/elastic/kibana-pull-request/builds/401368

Use ci/bk-build-info.sh 401368 to fetch detailed build failure information.

Fixed Build 401368 Linting Errors

The build failed due to 5 @typescript-eslint/no-explicit-any ESLint errors in x-pack/platform/plugins/shared/streams/server/routes/internal/streams/schema/route.test.ts.

Root cause: The test file was using as any type assertions to cast test data arrays.

Fix: Replaced as any casts with properly typed NamedFieldDefinitionConfig[] arrays. The test data already conforms to the correct union type from @kbn/streams-schema, so no changes to the test logic were needed - just explicit typing.

All local validations pass:

• ESLint: ✅
• Jest tests: ✅ (5/5 passing)
• TypeScript: ✅

/ralph check the test failures of build 401409 and fix them

Build URL: https://buildkite.com/elastic/kibana-pull-request/builds/401409

Use ci/bk-build-info.sh 401409 to fetch detailed build failure information.

Fixed Build 401409 Test Failures

Addressed all test failures from build 401409:

1. FTR Test Failure: "Ignores typeless (description-only) field definitions"

Root cause: After the upstream merge (commit 5d38e2b) that split the logs endpoint into logs.ecs and logs.otel, the test was still using name: 'logs' as the stream name. The logs root stream no longer exists as a standalone entity - only logs.otel and logs.ecs exist after enabling streams.

Fix: Changed stream name from 'logs' to 'logs.otel' in the FTR tests for description-only field definitions.

2. Jest Test Failure: "disables the Add field button when field name is valid but type is not selected"

Root cause: This PR introduced the ability for wired streams to have description-only field overrides (without a type). The test expected the Add field button to be disabled when no type is selected, but this is now valid behavior for wired streams.

Fix:

• Updated the test to expect the button to be enabled for wired streams (since description-only fields are allowed)
• Added a new test for classic streams that verifies the button is still disabled when no type is selected (since classic streams require a type)

3. Added Unit Tests for namedFieldDefinitionConfigSchema

Added tests to ensure the schema properly validates description-only field definitions with just a name and description property.

Written by cursor, wait for @flash1293 to chime in

💔 Build Failed

• Buildkite Build
• Commit: 62e9b93

Failed CI Steps

• Jest Integration Tests #13
• FTR Configs #39
• FTR Configs #39
• FTR Configs #134
• Post-Build

Test Failures

• [job] [logs] FTR Configs #39 / apis Streams Endpoints Streams inheritance - description-only overrides does not persist type for description-only overrides and keeps inherited mappings dynamic
• [job] [logs] FTR Configs #39 / apis Streams Endpoints Streams inheritance - description-only overrides does not persist type for description-only overrides and keeps inherited mappings dynamic
• [job] [logs] Jest Integration Tests #13 / scripts/generate_plugin builds a generated plugin into a viable archive
• [job] [logs] FTR Configs #134 / Serverless Observability - Deployment-agnostic Streams API integration tests Streams Endpoints Streams inheritance - description-only overrides does not persist type for description-only overrides and keeps inherited mappings dynamic

Metrics [docs]

‼️ ERROR: no builds found for mergeBase sha [8500782]

History

• 💔 Build #401409 failed 6a22c17
• 💔 Build #401368 failed bfaedd9
• 💔 Build #401347 failed 72d18fa
• 💔 Build #401306 failed 6b12da4
• 💔 Build #401293 failed 8f446d5

/ralph check the test failures of build 401479 and fix them

Build URL: https://buildkite.com/elastic/kibana-pull-request/builds/401479

Use ci/bk-build-info.sh 401479 to fetch detailed build failure information.

Fixed Build 401479 Test Failure

Root cause: The description_only_inheritance.ts test was trying to fork from 'logs', but after the upstream merge that split the logs endpoint into logs.ecs and logs.otel, the 'logs' root stream no longer exists as a standalone entity.

Fix: Updated the test to fork from 'logs.otel' instead of 'logs', and changed the parent stream name from logs.descriptiononlyparent to logs.otel.descriptiononlyparent for consistency with the new hierarchy.

This is the same fix pattern that was applied in commit 6a22c17 (Fix for Build 401409), but the stream name in the forkStream call was missed.

/ralph Please read through the changes on this PR so far and open a new clean draft PR with a proper summary for the eventual changes - on this PR too many things happened.

Created a clean PR with the squashed changes: #255136

The new PR has a comprehensive summary describing all features:

• Field descriptions support
• Documentation-only field overrides (typeless definitions)
• UI improvements (Edit field action, Clear description, status filter)
• Server-side validation
• Classic streams support

This PR can be closed once #255136 is reviewed and merged.

Written by cursor, wait for @flash1293 to chime in