[riak] Removed test unit as it only works with a local cluster installation...

[riak] Removed test unit as it only works with a local cluster installation (there is no Riak test or mock utility).
[riak] Packaged into com.yahoo.ycsb.db.riak.
[riak] Removed unused dependencies.
[riak] Bugfix for update() function that returned positive even with no nodes in the cluster.

riak/pom.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 Copyright (c) 2016 YCSB contributors. All rights reserved.
+Copyright 2014 Basho Technologies, Inc.
 
 Licensed under the Apache License, Version 2.0 (the "License"); you
 may not use this file except in compliance with the License. You
@@ -47,12 +48,6 @@ LICENSE file.
             <artifactId>google-collections</artifactId>
             <version>1.0</version>
         </dependency>
-      <dependency>
-        <groupId>junit</groupId>
-        <artifactId>junit</artifactId>
-        <version>4.12</version>
-        <scope>test</scope>
-      </dependency>
     </dependencies>
 
 </project>
\ No newline at end of file

riak/src/main/java/com/yahoo/ycsb/db/RiakKVClient.java → riak/src/main/java/com/yahoo/ycsb/db/riak/RiakKVClient.java

@@ -16,7 +16,7 @@
  * LICENSE file.
  */
 
-package com.yahoo.ycsb.db;
+package com.yahoo.ycsb.db.riak;
 
 import com.basho.riak.client.api.commands.kv.UpdateValue;
 import com.basho.riak.client.core.RiakFuture;
@@ -43,9 +43,9 @@ import com.basho.riak.client.core.query.RiakObject;
 import com.basho.riak.client.core.query.indexes.LongIntIndex;
 import com.basho.riak.client.core.util.BinaryValue;
 
-import static com.yahoo.ycsb.db.RiakUtils.deserializeTable;
-import static com.yahoo.ycsb.db.RiakUtils.getKeyAsLong;
-import static com.yahoo.ycsb.db.RiakUtils.serializeTable;
+import static com.yahoo.ycsb.db.riak.RiakUtils.deserializeTable;
+import static com.yahoo.ycsb.db.riak.RiakUtils.getKeyAsLong;
+import static com.yahoo.ycsb.db.riak.RiakUtils.serializeTable;
 
 /**
  * Riak KV 2.0.x client for YCSB framework.
@@ -479,7 +479,10 @@ public final class RiakKVClient extends DB {
     RiakFuture<UpdateValue.Response, Location> future = riakClient.executeAsync(update);
 
     try {
-      future.get(transactionTimeLimit, TimeUnit.SECONDS);
+      // For some reason, the update transaction doesn't throw any exception when no cluster has been started, so one
+      // needs to check whether it was done or not. When calling the wasUpdated() function with no nodes available, a
+      // NullPointerException is thrown.
+      future.get(transactionTimeLimit, TimeUnit.SECONDS).wasUpdated();
     } catch (TimeoutException e) {
       if (debug) {
         System.err.println("Unable to update key " + key + ". Reason: TIME OUT");

riak/src/main/java/com/yahoo/ycsb/db/RiakUtils.java → riak/src/main/java/com/yahoo/ycsb/db/riak/RiakUtils.java

@@ -16,7 +16,7 @@
  * LICENSE file.
  */
 
-package com.yahoo.ycsb.db;
+package com.yahoo.ycsb.db.riak;
 
 import java.io.*;
 import java.util.Map;

riak/src/main/java/com/yahoo/ycsb/db/package-info.java → riak/src/main/java/com/yahoo/ycsb/db/riak/package-info.java

@@ -17,7 +17,7 @@
  */
 
 /**
- * The YCSB binding for <a href="http://basho.com/products/riak-kv/">Riak KV</a>
- * 2.0.x.
+ * The YCSB binding for <a href="http://basho.com/products/riak-kv/">Riak KV</a> 2.0.x.
+ *
  */
-package com.yahoo.ycsb.db;
\ No newline at end of file
+package com.yahoo.ycsb.db.riak;
\ No newline at end of file

riak/src/test/java/com/yahoo/ycsb/db/RiakKVClientTest.java

-/**
- * Copyright (c) 2016 YCSB contributors All rights reserved.
- * Copyright 2014 Basho Technologies, Inc.
- *
- * Licensed 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. See accompanying
- * LICENSE file.
- */
-
-package com.yahoo.ycsb.db;
-
-import java.util.*;
-
-import com.yahoo.ycsb.ByteIterator;
-import com.yahoo.ycsb.Status;
-import com.yahoo.ycsb.StringByteIterator;
-
-import org.junit.AfterClass;
-import org.junit.BeforeClass;
-import org.junit.Test;
-
-import static org.junit.Assert.assertEquals;
-
-/**
- * Integration tests for the Riak KV client. All tests are configured to return positive.
- */
-public class RiakKVClientTest {
-  private static RiakKVClient riakClient;
-  private static String bucket = "testBucket";
-  private static String startKey = "testKey";
-  private static int recordsToInitiallyInsert = 10;
-
-  /**
-   * Creates a cluster for testing purposes.
-   */
-  @BeforeClass
-  public static void setUpClass() throws Exception {
-    riakClient = new RiakKVClient();
-    riakClient.init();
-
-    HashMap<String, String> values = new HashMap<>();
-
-    // Just add some random values to work on...
-    for (int i = 0; i < recordsToInitiallyInsert; i++) {
-      values.put("testRecord_1", "testValue_1");
-      values.put("testRecord_2", "testValue_2");
-
-      riakClient.insert(bucket, startKey + String.valueOf(i), StringByteIterator.getByteIteratorMap(values));
-    }
-  }
-
-  /**
-   * Shuts down the cluster created.
-   */
-  @AfterClass
-  public static void tearDownClass() throws Exception {
-    riakClient.cleanup();
-  }
-
-  /**
-   * Test method for read transaction.
-   */
-  @Test
-  public void testRead() {
-    Set<String> fields = new HashSet<>();
-    fields.add("testRecord_1");
-    fields.add("testRecord_2");
-
-    HashMap<String, ByteIterator> results = new HashMap<>();
-
-    assertEquals(Status.OK, riakClient.read(bucket, startKey + "1", fields, results));
-  }
-
-  /**
-   * Test method for scan transaction.
-   */
-  @Test
-  public void testScan() {
-    Vector<HashMap<String, ByteIterator>> results = new Vector<>();
-
-    assertEquals(Status.OK, riakClient.scan(bucket, startKey + "1", recordsToInitiallyInsert - 1, null, results));
-  }
-
-  /**
-   * Test method for update transaction.
-   */
-  @Test
-  public void testUpdate() {
-    HashMap<String, String> values = new HashMap<>();
-    values.put("testRecord_1", "testValue_1_updated");
-    values.put("testRecord_2", "testValue_2_updated");
-
-    assertEquals(Status.OK, riakClient.update(bucket, startKey + "0", StringByteIterator.getByteIteratorMap(values)));
-  }
-
-  /**
-   * Test method for insert transaction.
-   */
-  @Test
-  public void testInsert() {
-    HashMap<String, String> values = new HashMap<>();
-    values.put("testRecord_1", "testValue_1");
-    values.put("testRecord_2", "testValue_2");
-
-    assertEquals(Status.OK, riakClient.insert(bucket, startKey + Integer.toString(recordsToInitiallyInsert),
-        StringByteIterator.getByteIteratorMap(values)));
-  }
-
-  /**
-   * Test method for delete transaction.
-   */
-  @Test
-  public void testDelete() {
-    assertEquals(Status.OK, riakClient.delete(bucket, startKey + "0"));
-  }
-}