Add test logging debug to SimpleBlocksIT.testAddBlockWhileIndexingDocuments (#74952) (#74979)

Relates #74345

Author: tlrx

server/src/internalClusterTest/java/org/elasticsearch/blocks/SimpleBlocksIT.java

@@ -13,6 +13,7 @@
 import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
 import org.elasticsearch.action.admin.indices.exists.indices.IndicesExistsResponse;
 import org.elasticsearch.action.admin.indices.readonly.AddIndexBlockRequestBuilder;
+import org.elasticsearch.action.admin.indices.readonly.AddIndexBlockResponse;
 import org.elasticsearch.action.admin.indices.settings.put.UpdateSettingsRequestBuilder;
 import org.elasticsearch.action.index.IndexRequestBuilder;
 import org.elasticsearch.action.index.IndexResponse;
@@ -28,6 +29,7 @@
 import org.elasticsearch.index.IndexNotFoundException;
 import org.elasticsearch.test.BackgroundIndexer;
 import org.elasticsearch.test.ESIntegTestCase;
+import org.elasticsearch.test.junit.annotations.TestLogging;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -362,14 +364,16 @@ public void testConcurrentAddBlock() throws InterruptedException {
         }
     }
 
+    @TestLogging(
+        reason = "https://github.com/elastic/elasticsearch/issues/74345",
+        value = "org.elasticsearch.action.admin.indices.readonly:DEBUG,org.elasticsearch.cluster.metadata:DEBUG"
+    )
     public void testAddBlockWhileIndexingDocuments() throws Exception {
         final String indexName = randomAlphaOfLength(10).toLowerCase(Locale.ROOT);
         createIndex(indexName);
 
         final APIBlock block = randomAddableBlock();
-
         int nbDocs = 0;
-
         try {
             try (BackgroundIndexer indexer = new BackgroundIndexer(indexName, "_doc", client(), 1000)) {
                 indexer.setFailureAssertion(t -> {
@@ -381,11 +385,11 @@ public void testAddBlockWhileIndexingDocuments() throws Exception {
                 });
 
                 waitForDocs(randomIntBetween(10, 50), indexer);
-                assertAcked(client().admin().indices().prepareAddBlock(block, indexName));
+                final AddIndexBlockResponse response = client().admin().indices().prepareAddBlock(block, indexName).get();
+                assertTrue("Add Index Block request was not acknowledged: " + response, response.isAcknowledged());
                 indexer.stopAndAwaitStopped();
                 nbDocs += indexer.totalIndexedDocs();
             }
-
             assertIndexHasBlock(block, indexName);
         } finally {
             disableIndexBlock(indexName, block);

server/src/main/java/org/elasticsearch/action/admin/indices/readonly/AddIndexBlockResponse.java

@@ -10,14 +10,15 @@
 import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.action.support.DefaultShardOperationFailedException;
 import org.elasticsearch.action.support.master.ShardsAcknowledgedResponse;
-import org.elasticsearch.core.Nullable;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.io.stream.Writeable;
 import org.elasticsearch.common.util.CollectionUtils;
 import org.elasticsearch.common.xcontent.ToXContentFragment;
+import org.elasticsearch.common.xcontent.ToXContentObject;
 import org.elasticsearch.common.xcontent.XContentBuilder;
+import org.elasticsearch.core.Nullable;
 import org.elasticsearch.index.Index;
 
 import java.io.IOException;
@@ -66,7 +67,7 @@ public String toString() {
         return Strings.toString(this);
     }
 
-    public static class AddBlockResult implements Writeable, ToXContentFragment {
+    public static class AddBlockResult implements Writeable, ToXContentObject {
 
         private final Index index;
         private final @Nullable Exception exception;

server/src/main/java/org/elasticsearch/cluster/metadata/MetadataIndexStateService.java

@@ -644,7 +644,9 @@ public void innerOnFailure(final Exception e) {
 
                     private void processIfFinished() {
                         if (countDown.countDown()) {
-                            onResponse.accept(new AddBlockResult(index, results.toArray(new AddBlockShardResult[results.length()])));
+                            AddBlockResult result = new AddBlockResult(index, results.toArray(new AddBlockShardResult[results.length()]));
+                            logger.debug("result of applying block to index {}: {}", index, result);
+                            onResponse.accept(result);
                         }
                     }
                 });
@@ -885,7 +887,6 @@ static Tuple<ClusterState, Collection<AddBlockResult>> finalizeBlock(final Clust
                     logger.debug("verification of shards before blocking {} failed [{}]", index, result);
                     continue;
                 }
-                final IndexMetadata indexMetadata = metadata.getSafe(index);
                 final ClusterBlock tempBlock = blockedIndices.get(index);
                 assert tempBlock != null;
                 assert tempBlock.uuid() != null;