Address checkstyle errors after merge
diff --git a/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/ReaderWorker.java b/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/ReaderWorker.java
index 9817d94..adbdeda 100644
--- a/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/ReaderWorker.java
+++ b/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/ReaderWorker.java
@@ -452,7 +452,7 @@
             serverSet.close();
         }
         // Unregister gauges to prevent GC spirals
-        for(StreamReader sr : streamReaders) {
+        for (StreamReader sr : streamReaders) {
             sr.unregisterGauge();
         }
     }
diff --git a/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/stream/SyncReaderBenchmark.java b/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/stream/SyncReaderBenchmark.java
index 87006f4..122c8ef 100644
--- a/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/stream/SyncReaderBenchmark.java
+++ b/distributedlog-benchmark/src/main/java/com/twitter/distributedlog/benchmark/stream/SyncReaderBenchmark.java
@@ -143,7 +143,8 @@
                         nonBlocking = true;
                         catchupStopwatch.stop();
                         logger.info("Catchup {} records (total {} bytes) in {} milliseconds",
-                                new Object[] { numCatchupReads, numCatchupBytes, stopwatch.elapsed(TimeUnit.MILLISECONDS) });
+                                new Object[] { numCatchupReads, numCatchupBytes,
+                                    stopwatch.elapsed(TimeUnit.MILLISECONDS) });
                     }
                     stopwatch.reset();
                 } catch (IOException e) {
diff --git a/distributedlog-client/src/main/java/com/twitter/distributedlog/client/DistributedLogClientImpl.java b/distributedlog-client/src/main/java/com/twitter/distributedlog/client/DistributedLogClientImpl.java
index 5125f28..634afe1 100644
--- a/distributedlog-client/src/main/java/com/twitter/distributedlog/client/DistributedLogClientImpl.java
+++ b/distributedlog-client/src/main/java/com/twitter/distributedlog/client/DistributedLogClientImpl.java
@@ -17,14 +17,16 @@
  */
 package com.twitter.distributedlog.client;
 
+import static com.google.common.base.Preconditions.checkNotNull;
+
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
 import com.google.common.base.Stopwatch;
 import com.google.common.collect.Sets;
 import com.google.common.util.concurrent.ThreadFactoryBuilder;
 import com.twitter.distributedlog.DLSN;
 import com.twitter.distributedlog.LogRecordSetBuffer;
+import com.twitter.distributedlog.client.monitor.MonitorServiceClient;
 import com.twitter.distributedlog.client.ownership.OwnershipCache;
 import com.twitter.distributedlog.client.proxy.ClusterClient;
 import com.twitter.distributedlog.client.proxy.HostProvider;
@@ -240,7 +242,7 @@
             // to go so large for other reasons though.
             this.results = new ArrayList<Promise<DLSN>>(data.size());
             for (int i = 0; i < data.size(); i++) {
-                Preconditions.checkNotNull(data.get(i));
+                checkNotNull(data.get(i));
                 this.results.add(new Promise<DLSN>());
             }
         }
@@ -871,8 +873,8 @@
 
                 @Override
                 public void onSuccess(WriteResponse value) {
-                    if (StatusCode.FOUND == value.getHeader().getCode() &&
-                            null != value.getHeader().getLocation()) {
+                    if (StatusCode.FOUND == value.getHeader().getCode()
+                          && null != value.getHeader().getLocation()) {
                         SocketAddress addr;
                         try {
                              addr = DLSocketAddress.deserialize(value.getHeader().getLocation()).getSocketAddress();
diff --git a/distributedlog-client/src/main/java/com/twitter/distributedlog/client/proxy/ClusterClient.java b/distributedlog-client/src/main/java/com/twitter/distributedlog/client/proxy/ClusterClient.java
index bb95a97..f8bdae7 100644
--- a/distributedlog-client/src/main/java/com/twitter/distributedlog/client/proxy/ClusterClient.java
+++ b/distributedlog-client/src/main/java/com/twitter/distributedlog/client/proxy/ClusterClient.java
@@ -24,7 +24,7 @@
 import scala.runtime.BoxedUnit;
 
 /**
- * Cluster client
+ * Cluster client.
  */
 public class ClusterClient {
 
diff --git a/distributedlog-client/src/main/java/com/twitter/distributedlog/service/DistributedLogClientBuilder.java b/distributedlog-client/src/main/java/com/twitter/distributedlog/service/DistributedLogClientBuilder.java
index ec9a7c6..44d93ee 100644
--- a/distributedlog-client/src/main/java/com/twitter/distributedlog/service/DistributedLogClientBuilder.java
+++ b/distributedlog-client/src/main/java/com/twitter/distributedlog/service/DistributedLogClientBuilder.java
@@ -534,21 +534,21 @@
 
     @SuppressWarnings("unchecked")
     ClusterClient buildServerRoutingServiceClient(String serverRoutingServiceFinagleName) {
-        ClientBuilder builder = _clientBuilder;
+        ClientBuilder builder = this.clientBuilder;
         if (null == builder) {
             builder = ClientBuilder.get()
                     .tcpConnectTimeout(Duration.fromMilliseconds(200))
                     .connectTimeout(Duration.fromMilliseconds(200))
                     .requestTimeout(Duration.fromSeconds(1))
                     .retries(20);
-            if (!_clientConfig.getThriftMux()) {
+            if (!clientConfig.getThriftMux()) {
                 builder = builder.hostConnectionLimit(1);
             }
         }
-        if (_clientConfig.getThriftMux()) {
-            builder = builder.stack(ThriftMux.client().withClientId(_clientId));
+        if (clientConfig.getThriftMux()) {
+            builder = builder.stack(ThriftMux.client().withClientId(clientId));
         } else {
-            builder = builder.codec(ThriftClientFramedCodec.apply(Option.apply(_clientId)));
+            builder = builder.codec(ThriftClientFramedCodec.apply(Option.apply(clientId)));
         }
 
         Name name;
@@ -562,7 +562,7 @@
         // builder the client
         Service<ThriftClientRequest, byte[]> client =
                 ClientBuilder.safeBuildFactory(
-                        builder.dest(name).reportTo(_statsReceiver.scope("routing"))
+                        builder.dest(name).reportTo(statsReceiver.scope("routing"))
                 ).toService();
         DistributedLogService.ServiceIface service =
                 new DistributedLogService.ServiceToClient(client, new TBinaryProtocol.Factory());