[googledatastore] Address code review comments.

googledatastore/pom.xml

@@ -35,7 +35,7 @@ LICENSE file.
       <name>sonatype-snapshots</name>
       <url>https://oss.sonatype.org/content/repositories/snapshots/</url>
       <snapshots>
-	<enabled>true</enabled>
+        <enabled>true</enabled>
       </snapshots>
     </repository>
   </repositories>
@@ -62,28 +62,4 @@ LICENSE file.
       <scope>provided</scope>
     </dependency>
   </dependencies>
-  <build>
-    <plugins>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.15</version>
-        <configuration>
-          <consoleOutput>true</consoleOutput>
-          <configLocation>../checkstyle.xml</configLocation>
-          <failOnViolation>true</failOnViolation>
-          <failsOnError>false</failsOnError>
-        </configuration>
-        <executions>
-          <execution>
-            <id>validate</id>
-            <phase>validate</phase>
-            <goals>
-              <goal>checkstyle</goal>
-            </goals>
-          </execution>
-        </executions>
-      </plugin>
-    </plugins>
-  </build>
 </project>

googledatastore/src/main/java/com/yahoo/ycsb/db/GoogleDatastoreClient.java

@@ -242,6 +242,7 @@ public class GoogleDatastoreClient extends DB {
   @Override
   public Status update(String table, String key,
       HashMap<String, ByteIterator> values) {
+
     return doSingleItemMutation(table, key, values, MutationType.UPDATE);
   }
 
@@ -285,8 +286,10 @@ public class GoogleDatastoreClient extends DB {
     // for multi-item mutation, or Read-modify-write operation.
     CommitRequest.Builder commitRequest = CommitRequest.newBuilder();
     commitRequest.setMode(Mode.NON_TRANSACTIONAL);
+
     if (mutationType == MutationType.DELETE) {
       commitRequest.addMutationsBuilder().setDelete(datastoreKey);
+
     } else {
       // If this is not for delete, build the entity.
       Entity.Builder entityBuilder = Entity.newBuilder();