Fix based on feedback

Author: brfrn169

core/src/integration-test/java/com/scalar/db/storage/objectstorage/ObjectStorageMutationAtomicityUnitIntegrationTest.java renamed to core/src/integration-test/java/com/scalar/db/storage/objectstorage/ObjectStorageAtomicityUnitIntegrationTest.java

@@ -4,7 +4,7 @@
 import java.util.Map;
 import java.util.Properties;
 
-public class ObjectStorageMutationAtomicityUnitIntegrationTest
+public class ObjectStorageAtomicityUnitIntegrationTest
     extends DistributedStorageAtomicityUnitIntegrationTestBase {
 
   @Override

core/src/main/java/com/scalar/db/storage/jdbc/RdbEngineDb2.java

@@ -592,7 +592,7 @@ public String getTableNamesInNamespaceSql() {
 
   @Override
   public int getMinimumIsolationLevelForConsistencyRead() {
-    // In Db2, REPEATABLE READ and SERIALIZABLE isolation levels guarantee consistency reads
+    // In Db2, REPEATABLE READ and SERIALIZABLE isolation levels guarantee consistent reads
     return Connection.TRANSACTION_REPEATABLE_READ;
   }
 }

core/src/main/java/com/scalar/db/storage/jdbc/RdbEngineMysql.java

@@ -512,7 +512,7 @@ public String getTableNamesInNamespaceSql() {
 
   @Override
   public int getMinimumIsolationLevelForConsistencyRead() {
-    // In MySQL, REPEATABLE READ and SERIALIZABLE isolation levels guarantee consistency reads.
+    // In MySQL, REPEATABLE READ and SERIALIZABLE isolation levels guarantee consistent reads.
     return Connection.TRANSACTION_REPEATABLE_READ;
   }
 }

core/src/main/java/com/scalar/db/storage/jdbc/RdbEngineOracle.java

@@ -544,7 +544,7 @@ public String getTableNamesInNamespaceSql() {
 
   @Override
   public int getMinimumIsolationLevelForConsistencyRead() {
-    // In Oracle, only the SERIALIZABLE isolation level guarantees the consistency read
+    // In Oracle, only the SERIALIZABLE isolation level guarantees consistent reads
     return Connection.TRANSACTION_SERIALIZABLE;
   }
 }

core/src/main/java/com/scalar/db/storage/jdbc/RdbEngineSqlServer.java

@@ -440,7 +440,7 @@ public String getTableNamesInNamespaceSql() {
 
   @Override
   public int getMinimumIsolationLevelForConsistencyRead() {
-    // In SQL Server, REPEATABLE READ or higher isolation level guarantees the consistency read
+    // In SQL Server, REPEATABLE READ or higher isolation level guarantees consistent reads
     return Connection.TRANSACTION_REPEATABLE_READ;
   }
 }

core/src/main/java/com/scalar/db/storage/objectstorage/ObjectStorageWrapper.java

@@ -76,6 +76,10 @@ public interface ObjectStorageWrapper {
    */
   void deleteByPrefix(String prefix) throws ObjectStorageWrapperException;
 
-  /** Close the storage wrapper. */
+  /**
+   * Close the storage wrapper.
+   *
+   * @throws ObjectStorageWrapperException if an error occurs
+   */
   void close() throws ObjectStorageWrapperException;
 }