[3.4] Prevent use of shared distribution on gradle builds (#20227)

* Prevent use of shared distribution on gradle builds

Signed-off-by: Daniel Widdis <widdis@gmail.com>

* Test the new workaround condition

Signed-off-by: Daniel Widdis <widdis@gmail.com>

---------

Signed-off-by: Daniel Widdis <widdis@gmail.com>

Author: dbwiddis

buildSrc/src/integTest/groovy/org/opensearch/gradle/TestClustersPluginFuncTest.groovy

@@ -121,7 +121,9 @@ class TestClustersPluginFuncTest extends AbstractGradleFuncTest {
     }
 
     boolean assertNoCustomDistro(String clusterName) {
-        assert !customDistroFolder(clusterName).exists()
+        // Temporarily disabled, see https://github.com/opensearch-project/OpenSearch/pull/20227
+        // assert !customDistroFolder(clusterName).exists()
+        assert customDistroFolder(clusterName).exists()
         true
     }
 

buildSrc/src/main/java/org/opensearch/gradle/testclusters/OpenSearchNode.java

@@ -590,7 +590,9 @@ public synchronized void start() {
     private boolean canUseSharedDistribution() {
         // using original location can be too long due to MAX_PATH restrictions on windows CI
         // TODO revisit when moving to shorter paths on CI by using Teamcity
-        return OS.current() != OS.WINDOWS && extraJarFiles.size() == 0 && modules.size() == 0 && plugins.size() == 0;
+        // return OS.current() != OS.WINDOWS && extraJarFiles.size() == 0 && modules.size() == 0 && plugins.size() == 0;
+        // Workaround on Gradle 8.6+ due to JVM GC logging to OpenSearch execution directory in immutable workspace
+        return false;
     }
 
     private void logToProcessStdout(String message) {