Set proper gradle properties for CI. Ensure we override project prope…

.github/env/Linux/gradle.properties

@@ -1,6 +1,10 @@
 # https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners#supported-runners-and-hardware-resources
-org.gradle.parallel=true
-org.gradle.workers.max=2
+# We explicitly disable parallelism to give the single worker the maximum amount of heap space.
+# Some of our tests are heavy on heap, and benefit from as much as we can give them.
+# It may be best in the future to try and achieve better parallelism by enabling parallelism and
+# setting the maximum heap as appropriate. For example, 2 workers x 3G, or 3 workers x 2G.
+org.gradle.parallel=false
+org.gradle.workers.max=1
 org.gradle.jvmargs=-Xmx6g
 
 # Our CI JDKs should be pre-provisioned and invoked correctly,

.github/workflows/build-ci.yml

@@ -68,9 +68,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Create Dockerfile and context
         uses: burrunan/gradle-cache-action@v1
@@ -134,9 +133,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Create Dockerfile and context
         uses: burrunan/gradle-cache-action@v1
@@ -194,9 +192,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Create Dockerfile and context
         uses: burrunan/gradle-cache-action@v1
@@ -260,9 +257,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Create Dockerfile and context
         uses: burrunan/gradle-cache-action@v1

.github/workflows/check-ci.yml

@@ -23,9 +23,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Check
         uses: burrunan/gradle-cache-action@v1

.github/workflows/docs-ci.yml

@@ -22,9 +22,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: All Javadoc
         uses: burrunan/gradle-cache-action@v1
@@ -60,9 +59,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Generate Python Docs
         uses: burrunan/gradle-cache-action@v1

.github/workflows/long-check-ci.yml

@@ -23,9 +23,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Check
         uses: burrunan/gradle-cache-action@v1

.github/workflows/nightly-benchmarks.yml

@@ -22,9 +22,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Build
         uses: burrunan/gradle-cache-action@v1

.github/workflows/nightly-check-ci.yml

@@ -24,9 +24,8 @@ jobs:
 
       - name: Setup gradle properties
         run: |
-          mkdir -p $HOME/.gradle
-          cp .github/env/${{ runner.os }}/gradle.properties $HOME/.gradle/gradle.properties
-          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> $HOME/.gradle/gradle.properties
+          cat .github/env/${{ runner.os }}/gradle.properties >> gradle.properties
+          echo "org.gradle.java.installations.paths=${{ steps.setup-java.outputs.path }}" >> gradle.properties
 
       - name: Check
         uses: burrunan/gradle-cache-action@v1

gradle.properties

@@ -51,7 +51,7 @@ pipCacheDir=build/pipcache
 
 
 # use this to control the jvm arguments of gradle daemons.
-org.gradle.jvmargs=-Xms1g -Xmx3g -XX:+CMSClassUnloadingEnabled
+org.gradle.jvmargs=-Xms1g -Xmx3g
 
 # Setting debugCI to true will cause failed builds to keepalive for three hours so we can do post-mortem inspection of jenkins workspace
 debugCI=false