Remove unused & buggy method / class (related to ThreadLocal<Random>)

Author: HeartSaVioR

src/main/java/redis/clients/jedis/JedisClusterConnectionHandler.java

@@ -1,17 +1,16 @@
 package redis.clients.jedis;
 
-import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
-import redis.clients.jedis.exceptions.JedisConnectionException;
+import static redis.clients.jedis.JedisClusterInfoCache.getNodeKey;
 
 import java.util.Map;
-import java.util.Random;
 import java.util.Set;
 
-import static redis.clients.jedis.JedisClusterInfoCache.getNodeKey;
+import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
+
+import redis.clients.jedis.exceptions.JedisConnectionException;
 
 public abstract class JedisClusterConnectionHandler {
     protected final JedisClusterInfoCache cache;
-    private ThreadLocal<Random> random = new ThreadLocal<Random>();
 
     abstract Jedis getConnection();
 
@@ -29,7 +28,6 @@ public void returnBrokenConnection(Jedis connection) {
 
     public JedisClusterConnectionHandler(Set<HostAndPort> nodes, final GenericObjectPoolConfig poolConfig) {
 	this.cache = new JedisClusterInfoCache(poolConfig);
-	this.random.set(new Random());
 	initializeSlotsCache(nodes, poolConfig);
     }
 
@@ -80,9 +78,4 @@ public void renewSlotCache() {
 	}
     }
 
-    protected JedisPool getRandomConnection() {
-	Object[] nodeArray = cache.getNodes().values().toArray();
-	return (JedisPool) (nodeArray[this.random.get().nextInt(nodeArray.length)]);
-    }
-
 }

src/main/java/redis/clients/jedis/JedisRandomConnectionHandler.java

@@ -5,6 +5,13 @@
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
 
 import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
 import org.junit.After;
@@ -335,6 +342,33 @@ public void testCloseable() {
 	}
     }
 
+    @Test
+    public void testJedisClusterRunsWithMultithreaded() throws InterruptedException, ExecutionException {
+	Set<HostAndPort> jedisClusterNode = new HashSet<HostAndPort>();
+	jedisClusterNode.add(new HostAndPort("127.0.0.1", 7379));
+	final JedisCluster jc = new JedisCluster(jedisClusterNode);
+	jc.set("foo", "bar");
+	
+	ThreadPoolExecutor executor = new ThreadPoolExecutor(10, 100, 0, TimeUnit.SECONDS, new ArrayBlockingQueue<Runnable>(10));
+	List<Future<String>> futures = new ArrayList<Future<String>>();
+	for (int i = 0 ; i < 50 ; i++) {
+	    executor.submit(new Callable<String>() {
+		@Override
+		public String call() throws Exception {
+		    // FIXME : invalidate slot cache from JedisCluster to test random connection also does work
+		    return jc.get("foo");
+		}
+	    });
+	}
+
+	for (Future<String> future : futures) {
+	    String value = future.get();
+	    assertEquals("bar", value);
+	}
+	
+	jc.close();
+    }
+    
     private static String getNodeServingSlotRange(String infoOutput) {
 	// f4f3dc4befda352a4e0beccf29f5e8828438705d 127.0.0.1:7380 master - 0 1394372400827 0 connected 5461-10922
 	for (String infoLine : infoOutput.split("\n")) {