Mute GoogleCloudStorageBlobStoreRepositoryTests on jdk8 (#53119)

Tests in GoogleCloudStorageBlobStoreRepositoryTests are known 
to be flaky on JDK 8 (#51446, #52430 ) and we suspect a JDK 
bug (https://bugs.openjdk.java.net/browse/JDK-8180754) that triggers
 some assertion on the server side logic that emulates the Google 
Cloud Storage service.

Sadly we were not able to reproduce the failures, even when using 
the same OS (Debian 9, Ubuntu 16.04) and JDK (Oracle Corporation 
1.8.0_241 [Java HotSpot(TM) 64-Bit Server VM 25.241-b07]) of 
almost all the test failures on CI. While we spent some time fixing 
code (#51933, #52431) to circumvent the JDK bug they are still flaky 
on JDK-8. This commit mute these tests for JDK-8 only.

Close ##52906

Author: tlrx

plugins/repository-gcs/src/test/java/org/elasticsearch/repositories/gcs/GoogleCloudStorageBlobStoreRepositoryTests.java

@@ -28,9 +28,9 @@
 import fixture.gcs.GoogleCloudStorageHttpHandler;
 import org.apache.lucene.util.BytesRef;
 import org.apache.lucene.util.BytesRefBuilder;
-import org.apache.lucene.util.LuceneTestCase;
 import org.elasticsearch.action.ActionRunnable;
 import org.elasticsearch.action.support.PlainActionFuture;
+import org.elasticsearch.bootstrap.JavaVersion;
 import org.elasticsearch.cluster.metadata.RepositoryMetaData;
 import org.elasticsearch.cluster.service.ClusterService;
 import org.elasticsearch.common.SuppressForbidden;
@@ -67,9 +67,15 @@
 import static org.elasticsearch.repositories.gcs.GoogleCloudStorageRepository.CLIENT_NAME;
 
 @SuppressForbidden(reason = "this test uses a HttpServer to emulate a Google Cloud Storage endpoint")
-@LuceneTestCase.AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/52906")
 public class GoogleCloudStorageBlobStoreRepositoryTests extends ESMockAPIBasedRepositoryIntegTestCase {
 
+    private static void assumeNotJava8() {
+        assumeFalse("This test is flaky on jdk8 - we suspect a JDK bug to trigger some assertion in the HttpServer implementation used " +
+            "to emulate the server side logic of Google Cloud Storage. See https://bugs.openjdk.java.net/browse/JDK-8180754, " +
+            "https://github.com/elastic/elasticsearch/pull/51933 and https://github.com/elastic/elasticsearch/issues/52906 " +
+            "for more background on this issue.", JavaVersion.current().equals(JavaVersion.parse("8")));
+    }
+
     @Override
     protected String repositoryType() {
         return GoogleCloudStorageRepository.TYPE;
@@ -117,6 +123,7 @@ protected Settings nodeSettings(int nodeOrdinal) {
     }
 
     public void testDeleteSingleItem() {
+        assumeNotJava8();
         final String repoName = createRepository(randomName());
         final RepositoriesService repositoriesService = internalCluster().getMasterNodeInstance(RepositoriesService.class);
         final BlobStoreRepository repository = (BlobStoreRepository) repositoriesService.repository(repoName);
@@ -163,7 +170,62 @@ public void testChunkSize() {
         assertEquals("failed to parse value [101mb] for setting [chunk_size], must be <= [100mb]", e.getMessage());
     }
 
+    @Override
+    public void testSnapshotAndRestore() throws Exception {
+        assumeNotJava8();
+        super.testSnapshotAndRestore();
+    }
+
+    @Override
+    public void testList() throws IOException {
+        assumeNotJava8();
+        super.testList();
+    }
+
+    @Override
+    public void testIndicesDeletedFromRepository() throws Exception {
+        assumeNotJava8();
+        super.testIndicesDeletedFromRepository();
+    }
+
+    @Override
+    public void testDeleteBlobs() throws IOException {
+        assumeNotJava8();
+        super.testDeleteBlobs();
+    }
+
+    @Override
+    public void testWriteRead() throws IOException {
+        assumeNotJava8();
+        super.testWriteRead();
+    }
+
+    @Override
+    public void testReadNonExistingPath() throws IOException {
+        assumeNotJava8();
+        super.testReadNonExistingPath();
+    }
+
+    @Override
+    public void testContainerCreationAndDeletion() throws IOException {
+        assumeNotJava8();
+        super.testContainerCreationAndDeletion();
+    }
+
+    @Override
+    public void testMultipleSnapshotAndRollback() throws Exception {
+        assumeNotJava8();
+        super.testMultipleSnapshotAndRollback();
+    }
+
+    @Override
+    public void testSnapshotWithLargeSegmentFiles() throws Exception {
+        assumeNotJava8();
+        super.testSnapshotWithLargeSegmentFiles();
+    }
+
     public void testWriteReadLarge() throws IOException {
+        assumeNotJava8();
         try (BlobStore store = newBlobStore()) {
             final BlobContainer container = store.blobContainer(new BlobPath());
             byte[] data = randomBytes(GoogleCloudStorageBlobStore.LARGE_BLOB_THRESHOLD_BYTE_SIZE + 1);

test/framework/src/main/java/org/elasticsearch/repositories/blobstore/ESMockAPIBasedRepositoryIntegTestCase.java

@@ -122,7 +122,7 @@ public void tearDownHttpServer() {
     /**
      * Test the snapshot and restore of an index which has large segments files.
      */
-    public final void testSnapshotWithLargeSegmentFiles() throws Exception {
+    public void testSnapshotWithLargeSegmentFiles() throws Exception {
         final String repository = createRepository(randomName());
         final String index = "index-no-merges";
         createIndex(index, Settings.builder()