Filter gateway experiments from the experiment list page by Copilot · Pull Request #21130 · mlflow/mlflow

Copilot · 2026-02-25T09:42:54Z

Gateway experiments (auto-created with mlflow.experiment.sourceType=GATEWAY when a gateway endpoint has usage tracking enabled) were appearing alongside user experiments on the experiment list page, adding noise.

Changes

experimentPage.common-utils.ts: Added GATEWAY to ExperimentSourceType enum; exported new isGatewayExperiment() helper that detects experiments tagged with mlflow.experiment.sourceType=GATEWAY
useExperimentListQuery.ts: Filters out gateway experiments from the returned list before rendering (client-side, consistent with the existing demo-experiment reordering pattern)
useExperimentListQuery.test.tsx: Added test verifying gateway experiments are excluded from returned data

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.

Gateway experiments are now hidden from the experiment list page to reduce noise.

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/feature - A new user-facing feature 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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Gateway experiments (tagged with mlflow.experiment.sourceType=GATEWAY) are now excluded from the experiment list page. This is implemented by: 1. Adding GATEWAY to ExperimentSourceType enum in experimentPage.common-utils.ts 2. Exporting isGatewayExperiment() helper function 3. Filtering gateway experiments out in useExperimentListQuery.ts 4. Adding a test to verify the filtering behavior Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com>

Copilot

Pull request overview

This PR filters out gateway experiments (auto-created when gateway endpoints have usage tracking enabled) from the experiment list page to reduce UI clutter. Gateway experiments are identified by the tag mlflow.experiment.sourceType=GATEWAY and filtered client-side before rendering.

Changes:

Added GATEWAY enum value and isGatewayExperiment() helper function to identify gateway experiments
Implemented client-side filtering in the experiment list query hook to exclude gateway experiments
Added unit test to verify gateway experiments are properly filtered out

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
`experimentPage.common-utils.ts`	Added `GATEWAY` to `ExperimentSourceType` enum and created `isGatewayExperiment()` helper that checks for the gateway source type tag
`useExperimentListQuery.ts`	Modified sorting logic to filter out gateway experiments before separating demo and non-demo experiments
`useExperimentListQuery.test.tsx`	Added test case verifying gateway experiments are excluded from the returned experiment list

Copilot · 2026-02-25T10:29:01Z

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

+    const nonGateway = experiments.filter((e) => !isGatewayExperiment(e));
+    const demo = nonGateway.filter(isDemoExperiment);
+    const nonDemo = nonGateway.filter((e) => !isDemoExperiment(e));
    return [...demo, ...nonDemo];


🟡 MODERATE: Client-side filtering reduces the page size inconsistently — if the API returns 10 experiments but 3 are gateway experiments, users only see 7 on that page. This creates a confusing UX where page sizes vary unpredictably.

Consider either:

Filtering on the server side by adding gateway experiments to the search filter

Documenting this behavior if it's acceptable for the product

@TomeHirata This is not a concern?

Here's a video demonstrating the page size inconsistency:

gateway-experiment-page-size-bug.mp4

Good call, missed this message. Filed #21138 for migrating into the server side filter.

@TomeHirata Can you share #21138 in the relevant slack thread, which I think would've caught the issue.

For PRs like this, it’s risky to judge solo. Getting another set of eyes would help.

Sure, I noticed a challenge to do it on the server. Can you take a look at #21146?

Copilot · 2026-02-25T10:29:02Z

.../js/src/experiment-tracking/components/experiment-page/hooks/useExperimentListQuery.test.tsx

+
+      expect(result.current.data).toHaveLength(2);
+      expect(result.current.data?.map((e) => e.experimentId)).toEqual(['1', '3']);
+    });


🟢 NIT: Test coverage could be expanded to include edge cases: experiments that are both demo and gateway, or a page where all experiments are gateway experiments. While unlikely in practice, these scenarios would verify the filtering logic handles all cases correctly.

Suggested change

});

});

it('filters out experiments that are both demo and GATEWAY source type', async () => {

mockSearchExperiments.mockResolvedValueOnce({

experiments: [

{

experimentId: '1',

name: 'Regular Experiment',

artifactLocation: '/artifacts/1',

lifecycleStage: 'active',

lastUpdateTime: Date.now(),

creationTime: Date.now(),

tags: [],

allowedActions: [],

},

{

experimentId: '2',

name: 'Demo Gateway Experiment',

artifactLocation: '/artifacts/2',

lifecycleStage: 'active',

lastUpdateTime: Date.now(),

creationTime: Date.now(),

tags: [

{ key: 'mlflow.experimentType', value: 'DEMO' },

{ key: 'mlflow.experiment.sourceType', value: 'GATEWAY' },

],

allowedActions: [],

},

{

experimentId: '3',

name: 'Another Regular Experiment',

artifactLocation: '/artifacts/3',

lifecycleStage: 'active',

lastUpdateTime: Date.now(),

creationTime: Date.now(),

tags: [],

allowedActions: [],

},

],

});

const { result } = renderHook(() => useExperimentListQuery(), {

wrapper: createWrapper(),

});

await waitFor(() => expect(result.current.isLoading).toBe(false));

expect(result.current.data).toHaveLength(2);

expect(result.current.data?.map((e) => e.experimentId)).toEqual(['1', '3']);

});

it('returns an empty list when all experiments are GATEWAY source type', async () => {

mockSearchExperiments.mockResolvedValueOnce({

experiments: [

{

experimentId: '1',

name: 'Gateway Experiment 1',

artifactLocation: '/artifacts/1',

lifecycleStage: 'active',

lastUpdateTime: Date.now(),

creationTime: Date.now(),

tags: [{ key: 'mlflow.experiment.sourceType', value: 'GATEWAY' }],

allowedActions: [],

},

{

experimentId: '2',

name: 'Gateway Experiment 2',

artifactLocation: '/artifacts/2',

lifecycleStage: 'active',

lastUpdateTime: Date.now(),

creationTime: Date.now(),

tags: [{ key: 'mlflow.experiment.sourceType', value: 'GATEWAY' }],

allowedActions: [],

},

],

});

const { result } = renderHook(() => useExperimentListQuery(), {

wrapper: createWrapper(),

});

await waitFor(() => expect(result.current.isLoading).toBe(false));

expect(result.current.data).toHaveLength(0);

expect(result.current.data).toEqual([]);

});

github-actions · 2026-02-25T10:36:36Z

Documentation preview for a2765b4 is available at:

https://pr-21130--mlflow-docs-preview.netlify.app/docs/latest/

More info

Ignore this comment if this PR does not change the documentation.
The preview is updated when a new commit is pushed to this PR.
This comment was created by this workflow run.
The documentation was built by this workflow run.

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: TomeHirata <33407409+TomeHirata@users.noreply.github.com> Signed-off-by: Samraj Moorjani <samraj.moorjani@databricks.com>

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

e8c2cb2

Copilot AI assigned Copilot and TomeHirata Feb 25, 2026

Copilot started work on behalf of TomeHirata February 25, 2026 09:43 View session

Copilot AI changed the title ~~[WIP] Add filter for gateway experiments on list page~~ Filter gateway experiments from the experiment list page Feb 25, 2026

Copilot AI requested a review from TomeHirata February 25, 2026 09:54

Copilot finished work on behalf of TomeHirata February 25, 2026 09:54

TomeHirata approved these changes Feb 25, 2026

View reviewed changes

TomeHirata marked this pull request as ready for review February 25, 2026 10:25

Copilot AI review requested due to automatic review settings February 25, 2026 10:25

TomeHirata enabled auto-merge February 25, 2026 10:25

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

Copilot started reviewing on behalf of TomeHirata February 25, 2026 10:26 View session

Copilot AI reviewed Feb 25, 2026

View reviewed changes

TomeHirata added this pull request to the merge queue Feb 25, 2026

Merged via the queue into master with commit 0c7c0e9 Feb 25, 2026
40 of 41 checks passed

TomeHirata deleted the copilot/filter-experiments-for-gateway branch February 25, 2026 10:41

Copilot AI mentioned this pull request Feb 25, 2026

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

Merged

9 tasks

TomeHirata added the v3.10.1 label Feb 26, 2026

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-    });
+    });
+    it('filters out experiments that are both demo and GATEWAY source type', async () => {
+      mockSearchExperiments.mockResolvedValueOnce({
+        experiments: [
+          {
+            experimentId: '1',
+            name: 'Regular Experiment',
+            artifactLocation: '/artifacts/1',
+            lifecycleStage: 'active',
+            lastUpdateTime: Date.now(),
+            creationTime: Date.now(),
+            tags: [],
+            allowedActions: [],
+          },
+          {
+            experimentId: '2',
+            name: 'Demo Gateway Experiment',
+            artifactLocation: '/artifacts/2',
+            lifecycleStage: 'active',
+            lastUpdateTime: Date.now(),
+            creationTime: Date.now(),
+            tags: [
+              { key: 'mlflow.experimentType', value: 'DEMO' },
+              { key: 'mlflow.experiment.sourceType', value: 'GATEWAY' },
+            ],
+            allowedActions: [],
+          },
+          {
+            experimentId: '3',
+            name: 'Another Regular Experiment',
+            artifactLocation: '/artifacts/3',
+            lifecycleStage: 'active',
+            lastUpdateTime: Date.now(),
+            creationTime: Date.now(),
+            tags: [],
+            allowedActions: [],
+          },
+        ],
+      });
+      const { result } = renderHook(() => useExperimentListQuery(), {
+        wrapper: createWrapper(),
+      });
+      await waitFor(() => expect(result.current.isLoading).toBe(false));
+      expect(result.current.data).toHaveLength(2);
+      expect(result.current.data?.map((e) => e.experimentId)).toEqual(['1', '3']);
+    });
+    it('returns an empty list when all experiments are GATEWAY source type', async () => {
+      mockSearchExperiments.mockResolvedValueOnce({
+        experiments: [
+          {
+            experimentId: '1',
+            name: 'Gateway Experiment 1',
+            artifactLocation: '/artifacts/1',
+            lifecycleStage: 'active',
+            lastUpdateTime: Date.now(),
+            creationTime: Date.now(),
+            tags: [{ key: 'mlflow.experiment.sourceType', value: 'GATEWAY' }],
+            allowedActions: [],
+          },
+          {
+            experimentId: '2',
+            name: 'Gateway Experiment 2',
+            artifactLocation: '/artifacts/2',
+            lifecycleStage: 'active',
+            lastUpdateTime: Date.now(),
+            creationTime: Date.now(),
+            tags: [{ key: 'mlflow.experiment.sourceType', value: 'GATEWAY' }],
+            allowedActions: [],
+          },
+        ],
+      });
+      const { result } = renderHook(() => useExperimentListQuery(), {
+        wrapper: createWrapper(),
+      });
+      await waitFor(() => expect(result.current.isLoading).toBe(false));
+      expect(result.current.data).toHaveLength(0);
+      expect(result.current.data).toEqual([]);
+    });

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Changes

How is this PR tested?

Does this PR require documentation update?

Does this PR require updating the MLflow Skills repository?

Release Notes

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

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