fix java build failure (#6062)

java/test/src/main/java/org/ray/api/test/ActorTest.java

@@ -12,8 +12,6 @@ import org.ray.api.TestUtils.LargeObject;
 import org.ray.api.annotation.RayRemote;
 import org.ray.api.exception.UnreconstructableException;
 import org.ray.api.id.UniqueId;
-import org.ray.runtime.actor.NativeRayActor;
-import org.ray.runtime.object.NativeRayObject;
 import org.testng.Assert;
 import org.testng.annotations.Test;
 
@@ -107,14 +105,6 @@ public class ActorTest extends BaseTest {
             .get());
   }
 
-  public void testForkingActorHandle() {
-    TestUtils.skipTestUnderSingleProcess();
-    RayActor<Counter> counter = Ray.createActor(Counter::new, 100);
-    Assert.assertEquals(Integer.valueOf(101), Ray.call(Counter::increaseAndGet, counter, 1).get());
-    RayActor<Counter> counter2 = ((NativeRayActor) counter).fork();
-    Assert.assertEquals(Integer.valueOf(103), Ray.call(Counter::increaseAndGet, counter2, 2).get());
-  }
-
   public void testUnreconstructableActorObject() throws InterruptedException {
     TestUtils.skipTestUnderSingleProcess();
     // The UnreconstructableException is created by raylet.
@@ -128,9 +118,9 @@ public class ActorTest extends BaseTest {
     Ray.internal().free(ImmutableList.of(value.getId()), false, false);
     // Wait until the object is deleted, because the above free operation is async.
     while (true) {
-      NativeRayObject result = TestUtils.getRuntime().getObjectStore()
-          .getRaw(ImmutableList.of(value.getId()), 0).get(0);
-      if (result == null) {
+      Boolean result = TestUtils.getRuntime().getObjectStore()
+          .wait(ImmutableList.of(value.getId()), 1, 0).get(0);
+      if (!result) {
         break;
       }
       TimeUnit.MILLISECONDS.sleep(100);

java/test/src/main/java/org/ray/api/test/BaseMultiLanguageTest.java

@@ -10,6 +10,7 @@ import java.util.Map;
 import java.util.Map.Entry;
 import java.util.concurrent.TimeUnit;
 import org.ray.api.Ray;
+import org.ray.runtime.util.NetworkUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.testng.SkipException;
@@ -65,6 +66,8 @@ public abstract class BaseMultiLanguageTest {
       }
     }
 
+    String nodeManagerPort = String.valueOf(NetworkUtil.getUnusedPort());
+
     // Start ray cluster.
     String workerOptions =
         " -classpath " + System.getProperty("java.class.path");
@@ -75,6 +78,7 @@ public abstract class BaseMultiLanguageTest {
         "--redis-port=6379",
         String.format("--plasma-store-socket-name=%s", PLASMA_STORE_SOCKET_NAME),
         String.format("--raylet-socket-name=%s", RAYLET_SOCKET_NAME),
+        String.format("--node-manager-port=%s", nodeManagerPort),
         "--load-code-from-local",
         "--include-java",
         "--java-worker-options=" + workerOptions
@@ -94,6 +98,7 @@ public abstract class BaseMultiLanguageTest {
     System.setProperty("ray.redis.address", "127.0.0.1:6379");
     System.setProperty("ray.object-store.socket-name", PLASMA_STORE_SOCKET_NAME);
     System.setProperty("ray.raylet.socket-name", RAYLET_SOCKET_NAME);
+    System.setProperty("ray.raylet.node-manager-port", nodeManagerPort);
     Ray.init();
   }
 
@@ -113,6 +118,7 @@ public abstract class BaseMultiLanguageTest {
     System.clearProperty("ray.redis.address");
     System.clearProperty("ray.object-store.socket-name");
     System.clearProperty("ray.raylet.socket-name");
+    System.clearProperty("ray.raylet.node-manager-port");
 
     // Stop ray cluster.
     final List<String> stopCommand = ImmutableList.of(

java/test/src/main/java/org/ray/api/test/PlasmaFreeTest.java

@@ -26,7 +26,7 @@ public class PlasmaFreeTest extends BaseTest {
 
     final boolean result = TestUtils.waitForCondition(() ->
         TestUtils.getRuntime().getObjectStore()
-            .getRaw(ImmutableList.of(helloId.getId()), 0).get(0) == null, 50);
+            .wait(ImmutableList.of(helloId.getId()), 1, 0).get(0) == false, 50);
     Assert.assertTrue(result);
   }