Move gateway experiment filtering to server-side query to fix inconsistent page sizes by Copilot · Pull Request #21138 · mlflow/mlflow

Copilot · 2026-02-25T15:43:30Z

Client-side filtering of gateway experiments after pagination causes inconsistent page sizes — e.g., with page size 10 and every 3rd experiment tagged as GATEWAY, users see 7, 7, 1 instead of 10, 5, 1.

What changes are proposed in this pull request?

useExperimentListQuery.ts: Move gateway experiment exclusion into the server-side filter parameter in getFilters(), so the server excludes gateway experiments before paginating. Uses tags.\mlflow.experiment.isGateway` IS NULL(leveraging the new tag added in #21149) to correctly include all non-gateway experiments — avoiding the previous!= 'GATEWAY'approach which incorrectly excluded experiments that lacked thesourceTypetag entirely. Removes the now-redundant client-sideisGatewayExperimentfilter and its import. Uses theEXPERIMENT_IS_GATEWAY_TAGconstant fromexperimentPage.common-utils.ts` instead of a hardcoded string.
experimentPage.common-utils.ts: Export new EXPERIMENT_IS_GATEWAY_TAG constant (mlflow.experiment.isGateway) so it can be shared across modules. EXPERIMENT_SOURCE_TYPE_TAG and ExperimentSourceType remain unexported (internal to the file). Remove the isGatewayExperiment function as it is no longer referenced anywhere.
useExperimentListQuery.test.tsx: Update gateway filtering test to assert the IS NULL exclusion filter is present in the API call (not client-side behavior). Fix an overly broad filterParam?.includes('tags') check in the tags pagination test — since every query now includes a tag condition, tighten it to match the user-provided tag key ('env').

How is this PR tested?

Existing unit/integration tests
New unit/integration tests

Does this PR require documentation update?

No. You can skip the rest of this section.

Does this PR require updating the MLflow Skills repository?

No. You can skip the rest of this section.

Release Notes

Is this a user-facing change?

Yes. Give a description of this change to be included in the release notes for MLflow users.

Fix inconsistent experiment list page sizes caused by client-side filtering of gateway experiments after server-side pagination.

What component(s), interfaces, languages, and integrations does this PR affect?

Components

area/uiux: Front-end, user experience, plotting, JavaScript, JavaScript dev server

How should the PR be classified in the release notes? Choose one:

rn/bug-fix - A user-facing bug fix worth mentioning in the release notes

Should this PR be included in the next patch release?

Yes (this PR will be cherry-picked and included in the next patch release)
No (this PR will be included in the next minor release)

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…stent page sizes Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

TomeHirata · 2026-02-25T15:52:13Z

...server/js/src/experiment-tracking/components/experiment-page/hooks/useExperimentListQuery.ts

 import type { SortingState } from '@tanstack/react-table';
 import type { TagFilter } from './useTagsFilter';
 import { isDemoExperiment } from '../../../utils/isDemoExperiment';
-import { isGatewayExperiment } from '../utils/experimentPage.common-utils';


@copilot can we remove isGatewayExperiment function?

Done in 040a5a8 — removed isGatewayExperiment and the GATEWAY value from the ExperimentSourceType enum since neither is referenced anywhere anymore.

Copilot

Pull request overview

This PR fixes inconsistent experiment list page sizes caused by client-side filtering of gateway experiments after server-side pagination. By moving the gateway experiment exclusion filter to the server-side query, pagination now works correctly.

Changes:

Moved gateway experiment filtering (mlflow.experiment.sourceType != 'GATEWAY') from client-side to server-side query filter
Removed redundant client-side filtering logic and isGatewayExperiment import
Updated test to verify the filter is included in API calls rather than testing client-side filtering behavior

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
`mlflow/server/js/src/experiment-tracking/components/experiment-page/hooks/useExperimentListQuery.ts`	Adds gateway exclusion filter to server-side query and removes client-side filtering logic
`mlflow/server/js/src/experiment-tracking/components/experiment-page/hooks/useExperimentListQuery.test.tsx`	Updates gateway filtering test to verify API call includes the filter, and fixes overly broad tag filter check in pagination test

Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

...server/js/src/experiment-tracking/components/experiment-page/hooks/useExperimentListQuery.ts

Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

TomeHirata · 2026-02-26T00:43:11Z

hm, it seems "tag Is Not" search for experiments is not working in this way cuz it excludes any experiment that doesn't have the mlflow.experiment.sourceType tag at all.

TomeHirata · 2026-02-26T05:23:24Z

...server/js/src/experiment-tracking/components/experiment-page/hooks/useExperimentListQuery.ts

-    return undefined;
-  }
+  // Exclude gateway experiments server-side to ensure consistent page sizes
+  filters.push(`tags.\`${EXPERIMENT_SOURCE_TYPE_TAG}\` != '${ExperimentSourceType.GATEWAY}'`);


@copilot we added a new tag in #21149, can we use tags.mlflow.experiment.isGateway IS NULL instead?

Done in b30b620 — switched to tags.\mlflow.experiment.isGateway` IS NULLusing a newEXPERIMENT_IS_GATEWAY_TAGconstant exported fromexperimentPage.common-utils.ts`. This correctly includes all experiments that don't have the tag set, rather than accidentally excluding tag-less experiments.

…ents Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

TomeHirata · 2026-02-26T05:30:06Z

...r/js/src/experiment-tracking/components/experiment-page/utils/experimentPage.common-utils.ts


 const EXPERIMENT_TYPE_TAG = 'mlflow.experimentType';
-const EXPERIMENT_SOURCE_TYPE_TAG = 'mlflow.experiment.sourceType';
+export const EXPERIMENT_SOURCE_TYPE_TAG = 'mlflow.experiment.sourceType';


@copilot revert export change for EXPERIMENT_SOURCE_TYPE_TAG and ExperimentSourceType

Done in 3c5df6a — reverted EXPERIMENT_SOURCE_TYPE_TAG back to const (unexported) and ExperimentSourceType back to an unexported enum with only the REPO_NOTEBOOK value.

Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

serena-ruan

LGTM!

…stent page sizes (mlflow#21138) Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

…stent page sizes (#21138) Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Initial plan

66d2bbc

Copilot AI assigned Copilot and TomeHirata Feb 25, 2026

Copilot started work on behalf of TomeHirata February 25, 2026 15:43 View session

Move gateway experiment filtering to server-side query to fix inconsi…

24c36ba

…stent page sizes Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Add tag filter to search query implementation~~ Move gateway experiment filtering to server-side query to fix inconsistent page sizes Feb 25, 2026

Copilot finished work on behalf of TomeHirata February 25, 2026 15:50

TomeHirata reviewed Feb 25, 2026

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Copilot started work on behalf of TomeHirata February 25, 2026 15:52 View session

TomeHirata marked this pull request as ready for review February 25, 2026 15:52

Copilot AI review requested due to automatic review settings February 25, 2026 15:52

github-actions bot added size/M area/uiux Front-end, user experience, plotting, JavaScript, JavaScript dev server rn/bug-fix Mention under Bug Fixes in Changelogs. labels Feb 25, 2026

TomeHirata mentioned this pull request Feb 25, 2026

Filter gateway experiments from the experiment list page #21130

Merged

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Copilot AI reviewed Feb 25, 2026

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Remove isGatewayExperiment function and GATEWAY enum value

040a5a8

Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Copilot finished work on behalf of TomeHirata February 25, 2026 15:56

github-actions bot added the v3.10.1 label Feb 25, 2026

TomeHirata reviewed Feb 25, 2026

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...server/js/src/experiment-tracking/components/experiment-page/hooks/useExperimentListQuery.ts Outdated Show resolved Hide resolved

Copilot started work on behalf of TomeHirata February 25, 2026 15:59 View session

TomeHirata requested a review from harupy February 25, 2026 16:00

Use EXPERIMENT_SOURCE_TYPE_TAG constant in gateway filter

dbf670f

Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Copilot finished work on behalf of TomeHirata February 25, 2026 16:03

Copilot started work on behalf of TomeHirata February 25, 2026 16:04 View session

Use ExperimentSourceType.GATEWAY enum value in gateway filter

4162008

Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Copilot finished work on behalf of TomeHirata February 25, 2026 16:09

TomeHirata removed the request for review from harupy February 25, 2026 23:50

TomeHirata reviewed Feb 26, 2026

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Copilot started work on behalf of TomeHirata February 26, 2026 05:23 View session

Use tags.isGateway IS NULL filter to avoid excluding tag-less experim…

b30b620

…ents Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Copilot finished work on behalf of TomeHirata February 26, 2026 05:29

TomeHirata reviewed Feb 26, 2026

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Copilot started work on behalf of TomeHirata February 26, 2026 05:30 View session

TomeHirata requested review from B-Step62, harupy and serena-ruan February 26, 2026 05:30

Revert export of EXPERIMENT_SOURCE_TYPE_TAG and ExperimentSourceType

3c5df6a

Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Copilot finished work on behalf of TomeHirata February 26, 2026 05:34

serena-ruan approved these changes Feb 26, 2026

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github-actions bot assigned serena-ruan Feb 26, 2026

TomeHirata enabled auto-merge February 26, 2026 10:15

TomeHirata added this pull request to the merge queue Feb 26, 2026

Merged via the queue into master with commit b1d348b Feb 26, 2026
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TomeHirata deleted the copilot/include-tag-filter-in-search-query branch February 26, 2026 10:31

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Move gateway experiment filtering to server-side query to fix inconsistent page sizes#21138

Move gateway experiment filtering to server-side query to fix inconsistent page sizes#21138
TomeHirata merged 7 commits intomasterfrom
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