[DO_NOT_MERGE] HBASE-28035 ConnectionFactory.createConnection does not work with any…

hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestConnectionFactoryExecService.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.client;
+
+import static junit.framework.TestCase.assertTrue;
+
+import java.io.IOException;
+import java.util.concurrent.ForkJoinPool;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.HBaseClassTestRule;
+import org.apache.hadoop.hbase.HBaseTestingUtility;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.testclassification.SmallTests;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.ClassRule;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+
+@Category({ SmallTests.class })
+public class TestConnectionFactoryExecService {
+  @ClassRule
+  public static final HBaseClassTestRule CLASS_RULE =
+      HBaseClassTestRule.forClass(TestConnectionFactoryExecService.class);
+
+  private final static HBaseTestingUtility UTIL = new HBaseTestingUtility();
+  private static Configuration conf;
+
+  @BeforeClass
+  public static void before() throws Exception {
+    conf = UTIL.getConfiguration();
+    UTIL.startMiniCluster();
+  }
+
+  @AfterClass
+  public static void after() throws Exception {
+    UTIL.shutdownMiniCluster();
+  }
+
+  @Test
+  public void testConnectionWithTPE() throws IOException {
+    try(Connection conn = ConnectionFactory.createConnection(conf, new ThreadPoolExecutor( 1,  1, 60L,
+      TimeUnit.SECONDS, new LinkedBlockingQueue<>()))) {
+      assertTrue(conn.getAdmin().tableExists(TableName.valueOf("hbase:meta")));
+    }
+  }
+
+  @Test
+  public void testConnectionWithFJP() throws IOException {
+    try (Connection conn = ConnectionFactory.createConnection(conf, new ForkJoinPool(1))) {
+      assertTrue(conn.getAdmin().tableExists(TableName.valueOf("hbase:meta")));
+    }
+  }
+}