diff --git a/.github/workflows/static-checks.yml b/.github/workflows/static-checks.yml
index 778a79db7618..b2ad4dfb8e65 100644
--- a/.github/workflows/static-checks.yml
+++ b/.github/workflows/static-checks.yml
@@ -17,14 +17,14 @@ name: "Static Checks CI"
 on:
   push:
     branches:
-      - master
-      - '[0-9]+.[0-9]+.[0-9]+' # release branches
-      - '[0-9]+.[0-9]+.[0-9]+-[A-Za-z0-9]+' # release branches
-  pull_request:
-    branches:
-      - master
-      - '[0-9]+.[0-9]+.[0-9]+' # release branches
-      - '[0-9]+.[0-9]+.[0-9]+-[A-Za-z0-9]+' # release branches
+      - nonexistingbranch
+#      - '[0-9]+.[0-9]+.[0-9]+' # release branches
+#      - '[0-9]+.[0-9]+.[0-9]+-[A-Za-z0-9]+' # release branches
+#  pull_request:
+#    branches:
+#      - master
+#      - '[0-9]+.[0-9]+.[0-9]+' # release branches
+#      - '[0-9]+.[0-9]+.[0-9]+-[A-Za-z0-9]+' # release branches
 
 concurrency:
   group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.run_id }}' # group workflows only on pull_requests and not on branch commits
diff --git a/.github/workflows/unit-and-integration-tests-unified.yml b/.github/workflows/unit-and-integration-tests-unified.yml
index 81375f33c090..db438097751a 100644
--- a/.github/workflows/unit-and-integration-tests-unified.yml
+++ b/.github/workflows/unit-and-integration-tests-unified.yml
@@ -157,43 +157,36 @@ jobs:
           echo ${{ needs.set-env-var.outputs.DRUID_PREVIOUS_IT_IMAGE_NAME }}
           docker save "${{ needs.set-env-var.outputs.DRUID_PREVIOUS_IT_IMAGE_NAME }}" | gzip > druid-container-jdk${{ matrix.jdk }}-version${{ needs.set-env-var.outputs.DRUID_PREVIOUS_VERSION }}.tar.gz    
 
-  unit-tests-phase2:
-    strategy:
-      fail-fast: false
-      matrix:
-        # Use JDK 21.0.4 to work around https://github.com/apache/druid/issues/17429
-        jdk: [ '11', '21.0.4' ]
-    name: "unit tests (jdk${{ matrix.jdk }}, sql-compat=true)"
-    uses: ./.github/workflows/unit-tests.yml
-    needs: unit-tests
-    if: ${{ always() && (needs.unit-tests.result == 'success' || needs.unit-tests.outputs.continue_tests) }}
-    with:
-      jdk: ${{ matrix.jdk }}
-      sql_compatibility: true
-
-  unit-tests:
-    strategy:
-      fail-fast: false
-      matrix:
-        sql_compatibility: [ false, true ]
-    name: "unit tests (jdk17, sql-compat=${{ matrix.sql_compatibility }})"
-    uses: ./.github/workflows/unit-tests.yml
-    needs: build
-    with:
-      jdk: 17
-      sql_compatibility: ${{ matrix.sql_compatibility }}
+#  unit-tests-phase2:
+#    strategy:
+#      fail-fast: false
+#      matrix:
+#        # Use JDK 21.0.4 to work around https://github.com/apache/druid/issues/17429
+#        jdk: [ '11', '21.0.4' ]
+#    name: "unit tests (jdk${{ matrix.jdk }})"
+#    uses: ./.github/workflows/unit-tests.yml
+#    needs: unit-tests
+#    if: ${{ always() && (needs.unit-tests.result == 'success' || needs.unit-tests.outputs.continue_tests) }}
+#    with:
+#      jdk: ${{ matrix.jdk }}
+
+#  unit-tests:
+#    name: "unit tests (jdk17)"
+#    uses: ./.github/workflows/unit-tests.yml
+#    needs: build
+#    with:
+#      jdk: 17
 
   standard-its:
-    needs: unit-tests
-    if: ${{ always() && (needs.unit-tests.result == 'success' || needs.unit-tests.outputs.continue_tests) }}
+    needs: build
     uses: ./.github/workflows/standard-its.yml
 
-  revised-its:
-    needs: [unit-tests, set-env-var]
-    if: ${{ always() && (needs.unit-tests.result == 'success' || needs.unit-tests.outputs.continue_tests) }}
-    uses: ./.github/workflows/revised-its.yml
-    with:
-      BACKWARD_COMPATIBILITY_IT_ENABLED: ${{ needs.set-env-var.outputs.BACKWARD_COMPATIBILITY_IT_ENABLED }}
-      DRUID_PREVIOUS_VERSION: ${{ needs.set-env-var.outputs.DRUID_PREVIOUS_VERSION }}
-      DRUID_PREVIOUS_VERSION_DOWNLOAD_URL: ${{ needs.set-env-var.outputs.DRUID_PREVIOUS_VERSION_DOWNLOAD_URL }}
-      DRUID_PREVIOUS_IT_IMAGE_NAME: ${{ needs.set-env-var.outputs.DRUID_PREVIOUS_IT_IMAGE_NAME }}
+#  revised-its:
+#    needs: [unit-tests, set-env-var]
+#    if: ${{ always() && (needs.unit-tests.result == 'success' || needs.unit-tests.outputs.continue_tests) }}
+#    uses: ./.github/workflows/revised-its.yml
+#    with:
+#      BACKWARD_COMPATIBILITY_IT_ENABLED: ${{ needs.set-env-var.outputs.BACKWARD_COMPATIBILITY_IT_ENABLED }}
+#      DRUID_PREVIOUS_VERSION: ${{ needs.set-env-var.outputs.DRUID_PREVIOUS_VERSION }}
+#      DRUID_PREVIOUS_VERSION_DOWNLOAD_URL: ${{ needs.set-env-var.outputs.DRUID_PREVIOUS_VERSION_DOWNLOAD_URL }}
+#      DRUID_PREVIOUS_IT_IMAGE_NAME: ${{ needs.set-env-var.outputs.DRUID_PREVIOUS_IT_IMAGE_NAME }}