diff --git a/x-pack/test/functional/apps/aiops/log_pattern_analysis.ts b/x-pack/test/functional/apps/aiops/log_pattern_analysis.ts
index 2fa19f348dcab..e8f8d690e9334 100644
--- a/x-pack/test/functional/apps/aiops/log_pattern_analysis.ts
+++ b/x-pack/test/functional/apps/aiops/log_pattern_analysis.ts
@@ -23,8 +23,7 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
     });
   }
 
-  // FLAKY: https://github.com/elastic/kibana/issues/172739
-  describe.skip('log pattern analysis', async function () {
+  describe('log pattern analysis', async function () {
     let tabsCount = 1;
 
     afterEach(async () => {
@@ -55,8 +54,10 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
       await aiops.logPatternAnalysisPage.assertLogPatternAnalysisPageExists();
 
       await aiops.logPatternAnalysisPage.clickUseFullDataButton(totalDocCount);
+      await aiops.logPatternAnalysisPage.setRandomSamplingOption('aiopsRandomSamplerOptionOff');
       await aiops.logPatternAnalysisPage.selectCategoryField(selectedField);
       await aiops.logPatternAnalysisPage.clickRunButton();
+
       await aiops.logPatternAnalysisPage.assertTotalCategoriesFound(3);
       await aiops.logPatternAnalysisPage.assertCategoryTableRows(3);
 
@@ -82,6 +83,7 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
       await aiops.logPatternAnalysisPage.assertLogPatternAnalysisPageExists();
 
       await aiops.logPatternAnalysisPage.clickUseFullDataButton(totalDocCount);
+      await aiops.logPatternAnalysisPage.setRandomSamplingOption('aiopsRandomSamplerOptionOff');
       await aiops.logPatternAnalysisPage.selectCategoryField(selectedField);
       await aiops.logPatternAnalysisPage.clickRunButton();
       await aiops.logPatternAnalysisPage.assertTotalCategoriesFound(3);
diff --git a/x-pack/test/functional/apps/aiops/log_pattern_analysis_in_discover.ts b/x-pack/test/functional/apps/aiops/log_pattern_analysis_in_discover.ts
index 8d089155aa8b6..d341ac4cf1b2a 100644
--- a/x-pack/test/functional/apps/aiops/log_pattern_analysis_in_discover.ts
+++ b/x-pack/test/functional/apps/aiops/log_pattern_analysis_in_discover.ts
@@ -23,8 +23,7 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
     });
   }
 
-  // FLAKY: https://github.com/elastic/kibana/issues/172770
-  describe.skip('log pattern analysis', async function () {
+  describe('log pattern analysis', async function () {
     let tabsCount = 1;
 
     afterEach(async () => {
@@ -62,6 +61,8 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
       await aiops.logPatternAnalysisPage.assertLogPatternAnalysisFlyoutExists();
       await aiops.logPatternAnalysisPage.assertLogPatternAnalysisFlyoutTitle(selectedField);
 
+      await aiops.logPatternAnalysisPage.setRandomSamplingOption('aiopsRandomSamplerOptionOff');
+
       await aiops.logPatternAnalysisPage.assertTotalCategoriesFound(3);
       await aiops.logPatternAnalysisPage.assertCategoryTableRows(3);
 
@@ -92,6 +93,8 @@ export default function ({ getPageObjects, getService }: FtrProviderContext) {
       await aiops.logPatternAnalysisPage.assertLogPatternAnalysisFlyoutExists();
       await aiops.logPatternAnalysisPage.assertLogPatternAnalysisFlyoutTitle(selectedField);
 
+      await aiops.logPatternAnalysisPage.setRandomSamplingOption('aiopsRandomSamplerOptionOff');
+
       await aiops.logPatternAnalysisPage.assertTotalCategoriesFound(3);
       await aiops.logPatternAnalysisPage.assertCategoryTableRows(3);
 
diff --git a/x-pack/test/functional/services/aiops/log_pattern_analysis_page.ts b/x-pack/test/functional/services/aiops/log_pattern_analysis_page.ts
index 661881a288381..9c0ab19ac64c4 100644
--- a/x-pack/test/functional/services/aiops/log_pattern_analysis_page.ts
+++ b/x-pack/test/functional/services/aiops/log_pattern_analysis_page.ts
@@ -14,6 +14,11 @@ export function LogPatternAnalysisPageProvider({ getService, getPageObject }: Ft
   const testSubjects = getService('testSubjects');
   const comboBox = getService('comboBox');
 
+  type RandomSamplerOption =
+    | 'aiopsRandomSamplerOptionOnAutomatic'
+    | 'aiopsRandomSamplerOptionOnManual'
+    | 'aiopsRandomSamplerOptionOff';
+
   return {
     async assertLogPatternAnalysisPageExists() {
       await retry.tryForTime(30 * 1000, async () => {
@@ -60,25 +65,25 @@ export function LogPatternAnalysisPageProvider({ getService, getPageObject }: Ft
       });
     },
 
-    async assertTotalCategoriesFound(expectedCategoryCount: number) {
-      const expectedText = `${expectedCategoryCount} patterns found`;
+    async assertTotalCategoriesFound(expectedMinimumCategoryCount: number) {
       await retry.tryForTime(5000, async () => {
         const actualText = await testSubjects.getVisibleText('aiopsLogPatternsFoundCount');
-        expect(actualText).to.eql(
-          expectedText,
-          `Expected patterns found count to be '${expectedText}' (got '${actualText}')`
+        const actualCount = Number(actualText.split(' ')[0]);
+        expect(actualCount + 1).to.greaterThan(
+          expectedMinimumCategoryCount,
+          `Expected patterns found count to be >= '${expectedMinimumCategoryCount}' (got '${actualCount}')`
         );
       });
     },
 
-    async assertCategoryTableRows(expectedCategoryCount: number) {
+    async assertCategoryTableRows(expectedMinimumCategoryCount: number) {
       await retry.tryForTime(5000, async () => {
         const tableListContainer = await testSubjects.find('aiopsLogPatternsTable');
         const rows = await tableListContainer.findAllByClassName('euiTableRow');
 
-        expect(rows.length).to.eql(
-          expectedCategoryCount,
-          `Expected number of rows in table to be '${expectedCategoryCount}' (got '${rows.length}')`
+        expect(rows.length + 1).to.greaterThan(
+          expectedMinimumCategoryCount,
+          `Expected number of rows in table to be >= '${expectedMinimumCategoryCount}' (got '${rows.length}')`
         );
       });
     },
@@ -176,5 +181,23 @@ export function LogPatternAnalysisPageProvider({ getService, getPageObject }: Ft
         );
       });
     },
+
+    async setRandomSamplingOption(option: RandomSamplerOption) {
+      await retry.tryForTime(20000, async () => {
+        await testSubjects.existOrFail('aiopsLogPatternAnalysisShowSamplingOptionsButton');
+        await testSubjects.clickWhenNotDisabled('aiopsLogPatternAnalysisShowSamplingOptionsButton');
+
+        await testSubjects.clickWhenNotDisabled('aiopsRandomSamplerOptionsSelect');
+
+        await testSubjects.existOrFail('aiopsRandomSamplerOptionOff', { timeout: 1000 });
+        await testSubjects.existOrFail('aiopsRandomSamplerOptionOnManual', { timeout: 1000 });
+        await testSubjects.existOrFail('aiopsRandomSamplerOptionOnAutomatic', { timeout: 1000 });
+
+        await testSubjects.click(option);
+
+        await testSubjects.clickWhenNotDisabled('aiopsLogPatternAnalysisShowSamplingOptionsButton');
+        await testSubjects.missingOrFail('aiopsRandomSamplerOptionsFormRow', { timeout: 1000 });
+      });
+    },
   };
 }