Repository: tajo
Updated Branches:
  refs/heads/branch-0.11.0 9b4c8abb8 -> b418c4991


http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-core/src/main/java/org/apache/tajo/querymaster/Stage.java
----------------------------------------------------------------------
diff --git a/tajo-core/src/main/java/org/apache/tajo/querymaster/Stage.java 
b/tajo-core/src/main/java/org/apache/tajo/querymaster/Stage.java
index 98ad292..4e7ee83 100644
--- a/tajo-core/src/main/java/org/apache/tajo/querymaster/Stage.java
+++ b/tajo-core/src/main/java/org/apache/tajo/querymaster/Stage.java
@@ -775,14 +775,14 @@ public class Stage implements EventHandler<StageEvent> {
     DataChannel channel = masterPlan.getOutgoingChannels(getId()).get(0);
 
     // if store plan (i.e., CREATE or INSERT OVERWRITE)
-    String storeType = PlannerUtil.getStoreType(masterPlan.getLogicalPlan());
-    if (storeType == null) {
+    String dataFormat = PlannerUtil.getDataFormat(masterPlan.getLogicalPlan());
+    if (dataFormat == null) {
       // get final output store type (i.e., SELECT)
-      storeType = channel.getStoreType();
+      dataFormat = channel.getDataFormat();
     }
 
     schema = channel.getSchema();
-    meta = CatalogUtil.newTableMeta(storeType, new KeyValueSet());
+    meta = CatalogUtil.newTableMeta(dataFormat, new KeyValueSet());
     inputStatistics = statsArray[0];
     resultStatistics = statsArray[1];
   }

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-core/src/main/java/org/apache/tajo/querymaster/Task.java
----------------------------------------------------------------------
diff --git a/tajo-core/src/main/java/org/apache/tajo/querymaster/Task.java 
b/tajo-core/src/main/java/org/apache/tajo/querymaster/Task.java
index a586e4b..db0a982 100644
--- a/tajo-core/src/main/java/org/apache/tajo/querymaster/Task.java
+++ b/tajo-core/src/main/java/org/apache/tajo/querymaster/Task.java
@@ -276,7 +276,7 @@ public class Task implements EventHandler<TaskEvent> {
         fragmentList.add(fragment.toString());
       } catch (Exception e) {
         LOG.error(e.getMessage(), e);
-        fragmentList.add("ERROR: " + eachFragment.getStoreType() + "," + 
eachFragment.getId() + ": " + e.getMessage());
+        fragmentList.add("ERROR: " + eachFragment.getDataFormat() + "," + 
eachFragment.getId() + ": " + e.getMessage());
       }
     }
     taskHistory.setFragments(fragmentList.toArray(new String[]{}));

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-core/src/main/resources/webapps/admin/catalogview.jsp
----------------------------------------------------------------------
diff --git a/tajo-core/src/main/resources/webapps/admin/catalogview.jsp 
b/tajo-core/src/main/resources/webapps/admin/catalogview.jsp
index 6771912..2388f71 100644
--- a/tajo-core/src/main/resources/webapps/admin/catalogview.jsp
+++ b/tajo-core/src/main/resources/webapps/admin/catalogview.jsp
@@ -186,7 +186,7 @@
             <div style=''>Detail</div>
             <table border="1" class='border_table'>
               <tr><td width='100'>Table path</td><td 
width='410'><%=tableDesc.getUri()%></td></tr>
-              <tr><td>Store 
type</td><td><%=tableDesc.getMeta().getStoreType()%></td></tr>
+              <tr><td>Store 
type</td><td><%=tableDesc.getMeta().getDataFormat()%></td></tr>
               <tr><td># rows</td><td><%=(tableDesc.hasStats() ? ("" + 
tableDesc.getStats().getNumRows()) : "-")%></td></tr>
               <tr><td>Volume</td><td><%=(tableDesc.hasStats() ? 
FileUtil.humanReadableByteCount(tableDesc.getStats().getNumBytes(),true) : 
"-")%></td></tr>
               <tr><td>Options</td><td><%=optionStr%></td></tr>

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/LogicalPlanner.java
----------------------------------------------------------------------
diff --git a/tajo-plan/src/main/java/org/apache/tajo/plan/LogicalPlanner.java 
b/tajo-plan/src/main/java/org/apache/tajo/plan/LogicalPlanner.java
index 3531ce7..5599c7f 100644
--- a/tajo-plan/src/main/java/org/apache/tajo/plan/LogicalPlanner.java
+++ b/tajo-plan/src/main/java/org/apache/tajo/plan/LogicalPlanner.java
@@ -24,9 +24,6 @@ import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import org.apache.hadoop.fs.ContentSummary;
-import org.apache.hadoop.fs.FileStatus;
-import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.tajo.BuiltinStorages;
 import org.apache.tajo.OverridableConf;
@@ -1401,7 +1398,7 @@ public class LogicalPlanner extends 
BaseAlgebraVisitor<LogicalPlanner.PlanContex
   private void updatePhysicalInfo(TableDesc desc) {
 
     // FAKEFILE is used for test
-    if (!desc.getMeta().getStoreType().equals("SYSTEM") && 
!desc.getMeta().getStoreType().equals("FAKEFILE")) {
+    if (!desc.getMeta().getDataFormat().equals("SYSTEM") && 
!desc.getMeta().getDataFormat().equals("FAKEFILE")) {
       try {
         if (desc.getStats() != null) {
           desc.getStats().setNumBytes(storage.getTableVolumn(desc.getUri()));
@@ -1844,7 +1841,7 @@ public class LogicalPlanner extends 
BaseAlgebraVisitor<LogicalPlanner.PlanContex
     insertNode.setUri(targetUri);
 
     if (expr.hasStorageType()) {
-      
insertNode.setStorageType(CatalogUtil.getBackwardCompitablityStoreType(expr.getStorageType()));
+      
insertNode.setDataFormat(CatalogUtil.getBackwardCompitableDataFormat(expr.getDataFormat()));
     }
     if (expr.hasParams()) {
       KeyValueSet options = new KeyValueSet();
@@ -1891,7 +1888,7 @@ public class LogicalPlanner extends 
BaseAlgebraVisitor<LogicalPlanner.PlanContex
     createTableNode.setTableSchema(baseTable.getSchema());
     createTableNode.setPartitionMethod(partitionDesc);
 
-    
createTableNode.setStorageType(CatalogUtil.getBackwardCompitablityStoreType(baseTable.getMeta().getStoreType()));
+    
createTableNode.setDataFormat(CatalogUtil.getBackwardCompitableDataFormat(baseTable.getMeta().getDataFormat()));
     createTableNode.setOptions(baseTable.getMeta().getOptions());
 
     createTableNode.setExternal(baseTable.isExternal());
@@ -1927,9 +1924,9 @@ public class LogicalPlanner extends 
BaseAlgebraVisitor<LogicalPlanner.PlanContex
     createTableNode.setUri(getCreatedTableURI(context, expr));
 
     if (expr.hasStorageType()) { // If storage type (using clause) is specified
-      
createTableNode.setStorageType(CatalogUtil.getBackwardCompitablityStoreType(expr.getStorageType()));
+      
createTableNode.setDataFormat(CatalogUtil.getBackwardCompitableDataFormat(expr.getStorageType()));
     } else { // otherwise, default type
-      createTableNode.setStorageType(BuiltinStorages.TEXT);
+      createTableNode.setDataFormat(BuiltinStorages.TEXT);
     }
 
     // Set default storage properties to table

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/TablePropertyUtil.java
----------------------------------------------------------------------
diff --git 
a/tajo-plan/src/main/java/org/apache/tajo/plan/TablePropertyUtil.java 
b/tajo-plan/src/main/java/org/apache/tajo/plan/TablePropertyUtil.java
index 62fa706..4bf2734 100644
--- a/tajo-plan/src/main/java/org/apache/tajo/plan/TablePropertyUtil.java
+++ b/tajo-plan/src/main/java/org/apache/tajo/plan/TablePropertyUtil.java
@@ -38,10 +38,10 @@ public class TablePropertyUtil {
    * @param node CreateTableNode
    */
   public static void setTableProperty(OverridableConf context, CreateTableNode 
node) {
-    String storeType = node.getStorageType();
+    String dataFormat = node.getStorageType();
     KeyValueSet property = node.getOptions();
 
-    if (storeType.equalsIgnoreCase("TEXT") || 
storeType.equalsIgnoreCase("TEXT")) {
+    if (dataFormat.equalsIgnoreCase("TEXT") || 
dataFormat.equalsIgnoreCase("TEXT")) {
       setSessionToProperty(context, SessionVars.NULL_CHAR, property, 
StorageConstants.TEXT_NULL);
     }
   }

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/logical/CreateTableNode.java
----------------------------------------------------------------------
diff --git 
a/tajo-plan/src/main/java/org/apache/tajo/plan/logical/CreateTableNode.java 
b/tajo-plan/src/main/java/org/apache/tajo/plan/logical/CreateTableNode.java
index 9a169dd..bf29a2d 100644
--- a/tajo-plan/src/main/java/org/apache/tajo/plan/logical/CreateTableNode.java
+++ b/tajo-plan/src/main/java/org/apache/tajo/plan/logical/CreateTableNode.java
@@ -124,7 +124,7 @@ public class CreateTableNode extends StoreTableNode 
implements Cloneable {
   }
 
   public String toString() {
-    return "CreateTable (table=" + tableName + ", external=" + external + ", 
storeType=" + storageType +
+    return "CreateTable (table=" + tableName + ", external=" + external + ", 
dataFormat=" + storageType +
         ", ifNotExists=" + ifNotExists +")";
   }
 

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/logical/InsertNode.java
----------------------------------------------------------------------
diff --git 
a/tajo-plan/src/main/java/org/apache/tajo/plan/logical/InsertNode.java 
b/tajo-plan/src/main/java/org/apache/tajo/plan/logical/InsertNode.java
index cb3dcee..4030b69 100644
--- a/tajo-plan/src/main/java/org/apache/tajo/plan/logical/InsertNode.java
+++ b/tajo-plan/src/main/java/org/apache/tajo/plan/logical/InsertNode.java
@@ -48,7 +48,7 @@ public class InsertNode extends StoreTableNode implements 
Cloneable {
       setUri(desc.getUri());
     }
     setOptions(desc.getMeta().getOptions());
-    setStorageType(desc.getMeta().getStoreType());
+    setDataFormat(desc.getMeta().getDataFormat());
 
     if (desc.hasPartition()) {
       this.setPartitionMethod(desc.getPartitionMethod());

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/logical/PersistentStoreNode.java
----------------------------------------------------------------------
diff --git 
a/tajo-plan/src/main/java/org/apache/tajo/plan/logical/PersistentStoreNode.java 
b/tajo-plan/src/main/java/org/apache/tajo/plan/logical/PersistentStoreNode.java
index a28f01f..30e3260 100644
--- 
a/tajo-plan/src/main/java/org/apache/tajo/plan/logical/PersistentStoreNode.java
+++ 
b/tajo-plan/src/main/java/org/apache/tajo/plan/logical/PersistentStoreNode.java
@@ -39,7 +39,7 @@ public abstract class PersistentStoreNode extends UnaryNode 
implements Cloneable
     super(pid, nodeType);
   }
 
-  public void setStorageType(String storageType) {
+  public void setDataFormat(String storageType) {
     this.storageType = storageType;
   }
 

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/serder/LogicalNodeDeserializer.java
----------------------------------------------------------------------
diff --git 
a/tajo-plan/src/main/java/org/apache/tajo/plan/serder/LogicalNodeDeserializer.java
 
b/tajo-plan/src/main/java/org/apache/tajo/plan/serder/LogicalNodeDeserializer.java
index c75c3fd..2051dfb 100644
--- 
a/tajo-plan/src/main/java/org/apache/tajo/plan/serder/LogicalNodeDeserializer.java
+++ 
b/tajo-plan/src/main/java/org/apache/tajo/plan/serder/LogicalNodeDeserializer.java
@@ -502,7 +502,7 @@ public class LogicalNodeDeserializer {
       createTable.setOutSchema(convertSchema(protoNode.getOutSchema()));
     }
     createTable.setChild(nodeMap.get(persistentStoreProto.getChildSeq()));
-    createTable.setStorageType(persistentStoreProto.getStorageType());
+    createTable.setDataFormat(persistentStoreProto.getStorageType());
     createTable.setOptions(new 
KeyValueSet(persistentStoreProto.getTableProperties()));
 
     createTable.setTableName(storeTableNodeSpec.getTableName());
@@ -540,7 +540,7 @@ public class LogicalNodeDeserializer {
       insertNode.setOutSchema(convertSchema(protoNode.getOutSchema()));
     }
     insertNode.setChild(nodeMap.get(persistentStoreProto.getChildSeq()));
-    insertNode.setStorageType(persistentStoreProto.getStorageType());
+    insertNode.setDataFormat(persistentStoreProto.getStorageType());
     insertNode.setOptions(new 
KeyValueSet(persistentStoreProto.getTableProperties()));
 
     if (storeTableNodeSpec.hasTableName()) {

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/util/PlannerUtil.java
----------------------------------------------------------------------
diff --git a/tajo-plan/src/main/java/org/apache/tajo/plan/util/PlannerUtil.java 
b/tajo-plan/src/main/java/org/apache/tajo/plan/util/PlannerUtil.java
index 80e1e18..44dfc9f 100644
--- a/tajo-plan/src/main/java/org/apache/tajo/plan/util/PlannerUtil.java
+++ b/tajo-plan/src/main/java/org/apache/tajo/plan/util/PlannerUtil.java
@@ -159,7 +159,7 @@ public class PlannerUtil {
     
     for (LogicalNode node: scanNodes) {
       scanNode = (ScanNode) node;
-      isVirtualTable &= 
(scanNode.getTableDesc().getMeta().getStoreType().equalsIgnoreCase("SYSTEM"));
+      isVirtualTable &= 
(scanNode.getTableDesc().getMeta().getDataFormat().equalsIgnoreCase("SYSTEM"));
     }
     
     return !checkIfDDLPlan(rootNode) && hasScanNode && isVirtualTable;
@@ -818,7 +818,7 @@ public class PlannerUtil {
     }
   }
 
-  public static String getStoreType(LogicalPlan plan) {
+  public static String getDataFormat(LogicalPlan plan) {
     LogicalRootNode rootNode = plan.getRootBlock().getRoot();
     NodeType nodeType = rootNode.getChild().getType();
     if (nodeType == NodeType.CREATE_TABLE) {

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/java/org/apache/tajo/plan/verifier/PreLogicalPlanVerifier.java
----------------------------------------------------------------------
diff --git 
a/tajo-plan/src/main/java/org/apache/tajo/plan/verifier/PreLogicalPlanVerifier.java
 
b/tajo-plan/src/main/java/org/apache/tajo/plan/verifier/PreLogicalPlanVerifier.java
index 2c7feac..c16736d 100644
--- 
a/tajo-plan/src/main/java/org/apache/tajo/plan/verifier/PreLogicalPlanVerifier.java
+++ 
b/tajo-plan/src/main/java/org/apache/tajo/plan/verifier/PreLogicalPlanVerifier.java
@@ -190,7 +190,7 @@ public class PreLogicalPlanVerifier extends 
BaseAlgebraVisitor<PreLogicalPlanVer
     return true;
   }
 
-  private boolean assertSupportedStoreType(VerificationState state, String 
name) {
+  private boolean assertSupportedDataFormat(VerificationState state, String 
name) {
     Preconditions.checkNotNull(name);
 
     if (name.equalsIgnoreCase("RAW")) {
@@ -271,7 +271,7 @@ public class PreLogicalPlanVerifier extends 
BaseAlgebraVisitor<PreLogicalPlanVer
     }
 
     if (expr.hasStorageType()) {
-      assertSupportedStoreType(context.state, expr.getStorageType());
+      assertSupportedDataFormat(context.state, expr.getStorageType());
     }
 
     return expr;
@@ -298,7 +298,7 @@ public class PreLogicalPlanVerifier extends 
BaseAlgebraVisitor<PreLogicalPlanVer
     }
 
     if (expr.hasStorageType()) {
-      assertSupportedStoreType(context.state, expr.getStorageType());
+      assertSupportedDataFormat(context.state, expr.getDataFormat());
     }
 
     if (child != null && child.getType() == OpType.Projection) {

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/main/proto/Plan.proto
----------------------------------------------------------------------
diff --git a/tajo-plan/src/main/proto/Plan.proto 
b/tajo-plan/src/main/proto/Plan.proto
index fa1deeb..0cd0c32 100644
--- a/tajo-plan/src/main/proto/Plan.proto
+++ b/tajo-plan/src/main/proto/Plan.proto
@@ -566,7 +566,7 @@ message DataChannelProto {
   repeated ColumnProto shuffleKeys = 7;
   optional int32 numOutputs = 9 [default = 1];
 
-  optional string storeType = 10;
+  optional string dataFormat = 10;
 }
 
 message EnforcerProto {

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-plan/src/test/java/org/apache/tajo/plan/TestLogicalNode.java
----------------------------------------------------------------------
diff --git a/tajo-plan/src/test/java/org/apache/tajo/plan/TestLogicalNode.java 
b/tajo-plan/src/test/java/org/apache/tajo/plan/TestLogicalNode.java
index 92cb399..56edccc 100644
--- a/tajo-plan/src/test/java/org/apache/tajo/plan/TestLogicalNode.java
+++ b/tajo-plan/src/test/java/org/apache/tajo/plan/TestLogicalNode.java
@@ -22,11 +22,9 @@ import org.apache.hadoop.fs.Path;
 import org.apache.tajo.catalog.CatalogUtil;
 import org.apache.tajo.catalog.Column;
 import org.apache.tajo.catalog.Schema;
-import org.apache.tajo.catalog.proto.CatalogProtos.StoreType;
 import org.apache.tajo.common.TajoDataTypes.Type;
 import org.apache.tajo.plan.logical.GroupbyNode;
 import org.apache.tajo.plan.logical.JoinNode;
-import org.apache.tajo.plan.logical.LogicalNode;
 import org.apache.tajo.plan.logical.ScanNode;
 import org.junit.Test;
 

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/OldStorageManager.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/OldStorageManager.java
 
b/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/OldStorageManager.java
index 2e00bc9..859b8b8 100644
--- 
a/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/OldStorageManager.java
+++ 
b/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/OldStorageManager.java
@@ -103,39 +103,39 @@ public class OldStorageManager {
   }
 
   /**
-   * Returns the proper Tablespace instance according to the storeType.
+   * Returns the proper Tablespace instance according to the dataFormat.
    *
    * @param tajoConf Tajo system property.
-   * @param storeType Storage type
+   * @param dataFormat Storage type
    * @return
    * @throws IOException
    */
-  public static Tablespace getStorageManager(TajoConf tajoConf, String 
storeType) throws IOException {
+  public static Tablespace getStorageManager(TajoConf tajoConf, String 
dataFormat) throws IOException {
     FileSystem fileSystem = 
TajoConf.getWarehouseDir(tajoConf).getFileSystem(tajoConf);
     if (fileSystem != null) {
-      return getStorageManager(tajoConf, fileSystem.getUri(), storeType);
+      return getStorageManager(tajoConf, fileSystem.getUri(), dataFormat);
     } else {
-      return getStorageManager(tajoConf, null, storeType);
+      return getStorageManager(tajoConf, null, dataFormat);
     }
   }
 
   /**
-   * Returns the proper Tablespace instance according to the storeType
+   * Returns the proper Tablespace instance according to the dataFormat
    *
    * @param tajoConf Tajo system property.
    * @param uri Key that can identify each storage manager(may be a path)
-   * @param storeType Storage type
+   * @param dataFormat Storage type
    * @return
    * @throws IOException
    */
   public static synchronized Tablespace getStorageManager(
-      TajoConf tajoConf, URI uri, String storeType) throws IOException {
+      TajoConf tajoConf, URI uri, String dataFormat) throws IOException {
     Preconditions.checkNotNull(tajoConf);
     Preconditions.checkNotNull(uri);
-    Preconditions.checkNotNull(storeType);
+    Preconditions.checkNotNull(dataFormat);
 
     String typeName;
-    if (storeType.equalsIgnoreCase("HBASE")) {
+    if (dataFormat.equalsIgnoreCase("HBASE")) {
       typeName = "hbase";
     } else {
       typeName = "hdfs";

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/Tablespace.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/Tablespace.java
 
b/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/Tablespace.java
index 1c6f433..81fbbc0 100644
--- 
a/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/Tablespace.java
+++ 
b/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/Tablespace.java
@@ -209,7 +209,7 @@ public abstract class Tablespace {
 
     Scanner scanner;
 
-    Class<? extends Scanner> scannerClass = 
getScannerClass(meta.getStoreType());
+    Class<? extends Scanner> scannerClass = 
getScannerClass(meta.getDataFormat());
     scanner = OldStorageManager.newScannerInstance(scannerClass, conf, schema, 
meta, fragment);
     scanner.setTarget(target.toArray());
 
@@ -256,7 +256,7 @@ public abstract class Tablespace {
 
     Class<? extends Appender> appenderClass;
 
-    String handlerName = meta.getStoreType().toLowerCase();
+    String handlerName = meta.getDataFormat().toLowerCase();
     appenderClass = OldStorageManager.APPENDER_HANDLER_CACHE.get(handlerName);
     if (appenderClass == null) {
       appenderClass = conf.getClass(
@@ -265,7 +265,7 @@ public abstract class Tablespace {
     }
 
     if (appenderClass == null) {
-      throw new IOException("Unknown Storage Type: " + meta.getStoreType());
+      throw new IOException("Unknown Storage Type: " + meta.getDataFormat());
     }
 
     appender = OldStorageManager.newAppenderInstance(appenderClass, conf, 
taskAttemptId, meta, schema, workDir);
@@ -274,14 +274,14 @@ public abstract class Tablespace {
   }
 
   /**
-   * Return the Scanner class for the StoreType that is defined in 
storage-default.xml.
+   * Return the Scanner class for the DataFormat that is defined in 
storage-default.xml.
    *
-   * @param storeType store type
+   * @param dataFormat store type
    * @return The Scanner class
    * @throws java.io.IOException
    */
-  public Class<? extends Scanner> getScannerClass(String storeType) throws 
IOException {
-    String handlerName = storeType.toLowerCase();
+  public Class<? extends Scanner> getScannerClass(String dataFormat) throws 
IOException {
+    String handlerName = dataFormat.toLowerCase();
     Class<? extends Scanner> scannerClass = 
OldStorageManager.SCANNER_HANDLER_CACHE.get(handlerName);
     if (scannerClass == null) {
       scannerClass = conf.getClass(
@@ -290,7 +290,7 @@ public abstract class Tablespace {
     }
 
     if (scannerClass == null) {
-      throw new IOException("Unknown Storage Type: " + storeType);
+      throw new IOException("Unknown Storage Type: " + dataFormat);
     }
 
     return scannerClass;

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/fragment/FragmentConvertor.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/fragment/FragmentConvertor.java
 
b/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/fragment/FragmentConvertor.java
index bd46551..d9405e2 100644
--- 
a/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/fragment/FragmentConvertor.java
+++ 
b/tajo-storage/tajo-storage-common/src/main/java/org/apache/tajo/storage/fragment/FragmentConvertor.java
@@ -47,17 +47,17 @@ public class FragmentConvertor {
    */
   private static final Class<?>[] DEFAULT_FRAGMENT_PARAMS = { ByteString.class 
};
 
-  public static Class<? extends Fragment> getFragmentClass(Configuration conf, 
String storeType)
+  public static Class<? extends Fragment> getFragmentClass(Configuration conf, 
String dataFormat)
   throws IOException {
-    Class<? extends Fragment> fragmentClass = 
CACHED_FRAGMENT_CLASSES.get(storeType.toLowerCase());
+    Class<? extends Fragment> fragmentClass = 
CACHED_FRAGMENT_CLASSES.get(dataFormat.toLowerCase());
     if (fragmentClass == null) {
       fragmentClass = conf.getClass(
-          String.format("tajo.storage.fragment.%s.class", 
storeType.toLowerCase()), null, Fragment.class);
-      CACHED_FRAGMENT_CLASSES.put(storeType.toLowerCase(), fragmentClass);
+          String.format("tajo.storage.fragment.%s.class", 
dataFormat.toLowerCase()), null, Fragment.class);
+      CACHED_FRAGMENT_CLASSES.put(dataFormat.toLowerCase(), fragmentClass);
     }
 
     if (fragmentClass == null) {
-      throw new IOException("No such a fragment for " + 
storeType.toLowerCase());
+      throw new IOException("No such a fragment for " + 
dataFormat.toLowerCase());
     }
 
     return fragmentClass;
@@ -82,9 +82,9 @@ public class FragmentConvertor {
 
   public static <T extends Fragment> T convert(Configuration conf, 
FragmentProto fragment)
       throws IOException {
-    Class<T> fragmentClass = (Class<T>) getFragmentClass(conf, 
fragment.getStoreType().toLowerCase());
+    Class<T> fragmentClass = (Class<T>) getFragmentClass(conf, 
fragment.getDataFormat().toLowerCase());
     if (fragmentClass == null) {
-      throw new IOException("No such a fragment class for " + 
fragment.getStoreType());
+      throw new IOException("No such a fragment class for " + 
fragment.getDataFormat());
     }
     return convert(fragmentClass, fragment);
   }

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hbase/src/main/java/org/apache/tajo/storage/hbase/HBaseFragment.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hbase/src/main/java/org/apache/tajo/storage/hbase/HBaseFragment.java
 
b/tajo-storage/tajo-storage-hbase/src/main/java/org/apache/tajo/storage/hbase/HBaseFragment.java
index 2d3f2c3..18aa515 100644
--- 
a/tajo-storage/tajo-storage-hbase/src/main/java/org/apache/tajo/storage/hbase/HBaseFragment.java
+++ 
b/tajo-storage/tajo-storage-hbase/src/main/java/org/apache/tajo/storage/hbase/HBaseFragment.java
@@ -172,7 +172,7 @@ public class HBaseFragment implements Fragment, 
Comparable<HBaseFragment>, Clone
     FragmentProto.Builder fragmentBuilder = FragmentProto.newBuilder();
     fragmentBuilder.setId(this.tableName);
     fragmentBuilder.setContents(builder.buildPartial().toByteString());
-    fragmentBuilder.setStoreType(BuiltinStorages.HBASE);
+    fragmentBuilder.setDataFormat(BuiltinStorages.HBASE);
     return fragmentBuilder.build();
   }
 

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/fragment/FileFragment.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/fragment/FileFragment.java
 
b/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/fragment/FileFragment.java
index 5f94aae..508962e 100644
--- 
a/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/fragment/FileFragment.java
+++ 
b/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/fragment/FileFragment.java
@@ -230,7 +230,7 @@ public class FileFragment implements Fragment, 
Comparable<FileFragment>, Cloneab
 
     FragmentProto.Builder fragmentBuilder = FragmentProto.newBuilder();
     fragmentBuilder.setId(this.tableName);
-    fragmentBuilder.setStoreType(BuiltinStorages.TEXT);
+    fragmentBuilder.setDataFormat(BuiltinStorages.TEXT);
     fragmentBuilder.setContents(builder.buildPartial().toByteString());
     return fragmentBuilder.build();
   }

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/text/TextLineSerDe.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/text/TextLineSerDe.java
 
b/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/text/TextLineSerDe.java
index 4cdf7df..3143ec2 100644
--- 
a/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/text/TextLineSerDe.java
+++ 
b/tajo-storage/tajo-storage-hdfs/src/main/java/org/apache/tajo/storage/text/TextLineSerDe.java
@@ -43,7 +43,7 @@ public abstract class TextLineSerDe {
 
   public static ByteBuf getNullChars(TableMeta meta) {
     byte[] nullCharByteArray;
-    if (meta.getStoreType().equals("SEQUENCEFILE")) {
+    if (meta.getDataFormat().equals("SEQUENCEFILE")) {
       nullCharByteArray = getNullCharsAsBytes(meta, 
StorageConstants.SEQUENCEFILE_NULL, "\\");
     } else {
       nullCharByteArray = getNullCharsAsBytes(meta);

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestCompressionStorages.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestCompressionStorages.java
 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestCompressionStorages.java
index 67d0646..cc69119 100644
--- 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestCompressionStorages.java
+++ 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestCompressionStorages.java
@@ -53,12 +53,12 @@ public class TestCompressionStorages {
   private TajoConf conf;
   private static String TEST_PATH = "target/test-data/TestCompressionStorages";
 
-  private String storeType;
+  private String dataFormat;
   private Path testDir;
   private FileSystem fs;
 
   public TestCompressionStorages(String type) throws IOException {
-    this.storeType = type;
+    this.dataFormat = type;
     conf = new TajoConf();
 
     testDir = CommonTestingUtil.getTestDir(TEST_PATH);
@@ -76,44 +76,44 @@ public class TestCompressionStorages {
 
   @Test
   public void testDeflateCodecCompressionData() throws IOException {
-    storageCompressionTest(storeType, DeflateCodec.class);
+    storageCompressionTest(dataFormat, DeflateCodec.class);
   }
 
   @Test
   public void testGzipCodecCompressionData() throws IOException {
-    if (storeType.equalsIgnoreCase("RCFILE")) {
+    if (dataFormat.equalsIgnoreCase("RCFILE")) {
       if( ZlibFactory.isNativeZlibLoaded(conf)) {
-        storageCompressionTest(storeType, GzipCodec.class);
+        storageCompressionTest(dataFormat, GzipCodec.class);
       }
-    } else if (storeType.equalsIgnoreCase("SEQUENCEFILE")) {
+    } else if (dataFormat.equalsIgnoreCase("SEQUENCEFILE")) {
       if( ZlibFactory.isNativeZlibLoaded(conf)) {
-        storageCompressionTest(storeType, GzipCodec.class);
+        storageCompressionTest(dataFormat, GzipCodec.class);
       }
     } else {
-      storageCompressionTest(storeType, GzipCodec.class);
+      storageCompressionTest(dataFormat, GzipCodec.class);
     }
   }
 
   @Test
   public void testSnappyCodecCompressionData() throws IOException {
     if (SnappyCodec.isNativeCodeLoaded()) {
-      storageCompressionTest(storeType, SnappyCodec.class);
+      storageCompressionTest(dataFormat, SnappyCodec.class);
     }
   }
 
   @Test
   public void testLz4CodecCompressionData() throws IOException {
     if(NativeCodeLoader.isNativeCodeLoaded() && Lz4Codec.isNativeCodeLoaded())
-    storageCompressionTest(storeType, Lz4Codec.class);
+    storageCompressionTest(dataFormat, Lz4Codec.class);
   }
 
-  private void storageCompressionTest(String storeType, Class<? extends 
CompressionCodec> codec) throws IOException {
+  private void storageCompressionTest(String dataFormat, Class<? extends 
CompressionCodec> codec) throws IOException {
     Schema schema = new Schema();
     schema.addColumn("id", Type.INT4);
     schema.addColumn("age", Type.FLOAT4);
     schema.addColumn("name", Type.TEXT);
 
-    TableMeta meta = CatalogUtil.newTableMeta(storeType);
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat);
     meta.putOption("compression.codec", codec.getCanonicalName());
     meta.putOption("compression.type", 
SequenceFile.CompressionType.BLOCK.name());
     meta.putOption("rcfile.serde", TextSerializerDeserializer.class.getName());
@@ -154,7 +154,7 @@ public class TestCompressionStorages {
     Scanner scanner = TablespaceManager.getLocalFs().getScanner(meta, schema, 
tablets[0], schema);
     scanner.init();
 
-    if (storeType.equalsIgnoreCase("SEQUENCEFILE")) {
+    if (dataFormat.equalsIgnoreCase("SEQUENCEFILE")) {
       assertTrue(scanner instanceof SequenceFileScanner);
       Writable key = ((SequenceFileScanner) scanner).getKey();
       assertEquals(key.getClass().getCanonicalName(), 
LongWritable.class.getCanonicalName());

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestMergeScanner.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestMergeScanner.java
 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestMergeScanner.java
index 4faf8b9..78fbd6b 100644
--- 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestMergeScanner.java
+++ 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestMergeScanner.java
@@ -66,11 +66,11 @@ public class TestMergeScanner {
       "}\n";
 
   private Path testDir;
-  private String storeType;
+  private String dataFormat;
   private FileSystem fs;
 
-  public TestMergeScanner(String storeType) {
-    this.storeType = storeType;
+  public TestMergeScanner(String dataFormat) {
+    this.dataFormat = dataFormat;
   }
 
   @Parameters
@@ -83,7 +83,7 @@ public class TestMergeScanner {
         {"SEQUENCEFILE"},
         {"AVRO"},
         // RowFile requires Byte-buffer read support, so we omitted RowFile.
-        //{StoreType.ROWFILE},
+        //{DataFormat.ROWFILE},
     });
   }
 
@@ -106,13 +106,13 @@ public class TestMergeScanner {
     schema.addColumn("age", Type.INT8);
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
-    meta.setOptions(CatalogUtil.newDefaultProperty(storeType));
-    if (storeType.equalsIgnoreCase("AVRO")) {
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
+    meta.setOptions(CatalogUtil.newDefaultProperty(dataFormat));
+    if (dataFormat.equalsIgnoreCase("AVRO")) {
       meta.putOption(StorageConstants.AVRO_SCHEMA_LITERAL, 
TEST_MULTIPLE_FILES_AVRO_SCHEMA);
     }
 
-    Path table1Path = new Path(testDir, storeType + "_1.data");
+    Path table1Path = new Path(testDir, dataFormat + "_1.data");
     Appender appender1 = TablespaceManager.getLocalFs().getAppender(null, 
null, meta, schema, table1Path);
     appender1.enableStats();
     appender1.init();
@@ -134,7 +134,7 @@ public class TestMergeScanner {
       assertEquals(tupleNum, stat1.getNumRows().longValue());
     }
 
-    Path table2Path = new Path(testDir, storeType + "_2.data");
+    Path table2Path = new Path(testDir, dataFormat + "_2.data");
     Appender appender2 = TablespaceManager.getLocalFs().getAppender(null, 
null, meta, schema, table2Path);
     appender2.enableStats();
     appender2.init();
@@ -166,7 +166,7 @@ public class TestMergeScanner {
     targetSchema.addColumn(schema.getColumn(2));
 
     Scanner scanner = new MergeScanner(conf, schema, meta, 
TUtil.newList(fragment), targetSchema);
-    assertEquals(isProjectableStorage(meta.getStoreType()), 
scanner.isProjectable());
+    assertEquals(isProjectableStorage(meta.getDataFormat()), 
scanner.isProjectable());
 
     scanner.init();
     int totalCounts = 0;
@@ -174,7 +174,7 @@ public class TestMergeScanner {
     while ((tuple = scanner.next()) != null) {
       totalCounts++;
 
-      if (storeType.equalsIgnoreCase("RAW")) {
+      if (dataFormat.equalsIgnoreCase("RAW")) {
         assertEquals(4, tuple.size());
         assertFalse(tuple.isBlankOrNull(0));
         assertFalse(tuple.isBlankOrNull(1));

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestStorages.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestStorages.java
 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestStorages.java
index 26e16ea..278de45 100644
--- 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestStorages.java
+++ 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/TestStorages.java
@@ -109,7 +109,7 @@ public class TestStorages {
           "  ]\n" +
           "}\n";
 
-  private String storeType;
+  private String dataFormat;
   private boolean splitable;
   private boolean statsable;
   private boolean seekable;
@@ -121,14 +121,14 @@ public class TestStorages {
       throws IOException {
     final String TEST_PATH = "target/test-data/TestStorages";
 
-    this.storeType = type;
+    this.dataFormat = type;
     this.splitable = splitable;
     this.statsable = statsable;
     this.seekable = seekable;
     this.internalType = internalType;
     conf = new TajoConf();
 
-    if (storeType.equalsIgnoreCase(BuiltinStorages.RCFILE)) {
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.RCFILE)) {
       conf.setInt(RCFile.RECORD_INTERVAL_CONF_STR, 100);
     }
 
@@ -159,7 +159,7 @@ public class TestStorages {
       schema.addColumn("id", Type.INT4);
       schema.addColumn("age", Type.INT8);
 
-      TableMeta meta = CatalogUtil.newTableMeta(storeType);
+      TableMeta meta = CatalogUtil.newTableMeta(dataFormat);
       Path tablePath = new Path(testDir, "Splitable.data");
       FileTablespace sm = TablespaceManager.getLocalFs();
       Appender appender = sm.getAppender(meta, schema, tablePath);
@@ -214,9 +214,9 @@ public class TestStorages {
     schema.addColumn("age", Type.INT8);
     schema.addColumn("score", Type.FLOAT4);
 
-    TableMeta meta = CatalogUtil.newTableMeta(storeType);
-    meta.setOptions(CatalogUtil.newDefaultProperty(storeType));
-    if (storeType.equalsIgnoreCase(BuiltinStorages.AVRO)) {
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat);
+    meta.setOptions(CatalogUtil.newDefaultProperty(dataFormat));
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.AVRO)) {
       meta.putOption(StorageConstants.AVRO_SCHEMA_LITERAL,
           TEST_PROJECTION_AVRO_SCHEMA);
     }
@@ -231,7 +231,7 @@ public class TestStorages {
     TableStats stat = appender.getStats();
     assertEquals(0, stat.getNumRows().longValue());
 
-    if(internalType || BuiltinStorages.TEXT.equals(storeType)) {
+    if(internalType || BuiltinStorages.TEXT.equals(dataFormat)) {
       FileStatus fileStatus = fs.getFileStatus(tablePath);
       assertEquals(0, fileStatus.getLen());
     }
@@ -252,12 +252,12 @@ public class TestStorages {
 
   @Test
   public void testRCFileSplitable() throws IOException {
-    if (storeType.equalsIgnoreCase(BuiltinStorages.RCFILE)) {
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.RCFILE)) {
       Schema schema = new Schema();
       schema.addColumn("id", Type.INT4);
       schema.addColumn("age", Type.INT8);
 
-      TableMeta meta = CatalogUtil.newTableMeta(storeType);
+      TableMeta meta = CatalogUtil.newTableMeta(dataFormat);
       Path tablePath = new Path(testDir, "Splitable.data");
       FileTablespace sm = TablespaceManager.getLocalFs();
       Appender appender = sm.getAppender(meta, schema, tablePath);
@@ -312,9 +312,9 @@ public class TestStorages {
     schema.addColumn("age", Type.INT8);
     schema.addColumn("score", Type.FLOAT4);
 
-    TableMeta meta = CatalogUtil.newTableMeta(storeType);
-    meta.setOptions(CatalogUtil.newDefaultProperty(storeType));
-    if (storeType.equalsIgnoreCase(BuiltinStorages.AVRO)) {
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat);
+    meta.setOptions(CatalogUtil.newDefaultProperty(dataFormat));
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.AVRO)) {
       meta.putOption(StorageConstants.AVRO_SCHEMA_LITERAL,
           TEST_PROJECTION_AVRO_SCHEMA);
     }
@@ -370,7 +370,7 @@ public class TestStorages {
 
   @Test
   public void testVariousTypes() throws IOException {
-    boolean handleProtobuf = !storeType.equalsIgnoreCase(BuiltinStorages.JSON);
+    boolean handleProtobuf = 
!dataFormat.equalsIgnoreCase(BuiltinStorages.JSON);
 
     Schema schema = new Schema();
     schema.addColumn("col1", Type.BOOLEAN);
@@ -389,9 +389,9 @@ public class TestStorages {
     }
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
-    meta.setOptions(CatalogUtil.newDefaultProperty(storeType));
-    if (storeType.equalsIgnoreCase(BuiltinStorages.AVRO)) {
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
+    meta.setOptions(CatalogUtil.newDefaultProperty(dataFormat));
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.AVRO)) {
       String path = 
JavaResourceUtil.getResourceURL("dataset/testVariousTypes.avsc").toString();
       meta.putOption(StorageConstants.AVRO_SCHEMA_URL, path);
     }
@@ -443,7 +443,7 @@ public class TestStorages {
 
   @Test
   public void testNullHandlingTypes() throws IOException {
-    boolean handleProtobuf = !storeType.equalsIgnoreCase(BuiltinStorages.JSON);
+    boolean handleProtobuf = 
!dataFormat.equalsIgnoreCase(BuiltinStorages.JSON);
 
     Schema schema = new Schema();
     schema.addColumn("col1", Type.BOOLEAN);
@@ -463,13 +463,13 @@ public class TestStorages {
     }
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
-    meta.setOptions(CatalogUtil.newDefaultProperty(storeType));
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
+    meta.setOptions(CatalogUtil.newDefaultProperty(dataFormat));
     meta.putOption(StorageConstants.TEXT_NULL, "\\\\N");
     meta.putOption(StorageConstants.RCFILE_NULL, "\\\\N");
     meta.putOption(StorageConstants.RCFILE_SERDE, 
TextSerializerDeserializer.class.getName());
     meta.putOption(StorageConstants.SEQUENCEFILE_NULL, "\\");
-    if (storeType.equalsIgnoreCase("AVRO")) {
+    if (dataFormat.equalsIgnoreCase("AVRO")) {
       meta.putOption(StorageConstants.AVRO_SCHEMA_LITERAL, 
TEST_NULL_HANDLING_TYPES_AVRO_SCHEMA);
     }
 
@@ -540,7 +540,7 @@ public class TestStorages {
 
   @Test
   public void testRCFileTextSerializeDeserialize() throws IOException {
-    if(!storeType.equalsIgnoreCase(BuiltinStorages.RCFILE)) return;
+    if(!dataFormat.equalsIgnoreCase(BuiltinStorages.RCFILE)) return;
 
     Schema schema = new Schema();
     schema.addColumn("col1", Type.BOOLEAN);
@@ -558,7 +558,7 @@ public class TestStorages {
     schema.addColumn("col13", CatalogUtil.newDataType(Type.PROTOBUF, 
TajoIdProtos.QueryIdProto.class.getName()));
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
     meta.putOption(StorageConstants.CSVFILE_SERDE, 
TextSerializerDeserializer.class.getName());
 
     Path tablePath = new Path(testDir, "testVariousTypes.data");
@@ -609,7 +609,7 @@ public class TestStorages {
 
   @Test
   public void testRCFileBinarySerializeDeserialize() throws IOException {
-    if(!storeType.equalsIgnoreCase(BuiltinStorages.RCFILE)) return;
+    if(!dataFormat.equalsIgnoreCase(BuiltinStorages.RCFILE)) return;
 
     Schema schema = new Schema();
     schema.addColumn("col1", Type.BOOLEAN);
@@ -627,7 +627,7 @@ public class TestStorages {
     schema.addColumn("col13", CatalogUtil.newDataType(Type.PROTOBUF, 
TajoIdProtos.QueryIdProto.class.getName()));
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
     meta.putOption(StorageConstants.RCFILE_SERDE, 
BinarySerializerDeserializer.class.getName());
 
     Path tablePath = new Path(testDir, "testVariousTypes.data");
@@ -678,7 +678,7 @@ public class TestStorages {
 
   @Test
   public void testSequenceFileTextSerializeDeserialize() throws IOException {
-    if(!storeType.equalsIgnoreCase(BuiltinStorages.SEQUENCE_FILE)) return;
+    if(!dataFormat.equalsIgnoreCase(BuiltinStorages.SEQUENCE_FILE)) return;
 
     Schema schema = new Schema();
     schema.addColumn("col1", Type.BOOLEAN);
@@ -696,7 +696,7 @@ public class TestStorages {
     schema.addColumn("col13", CatalogUtil.newDataType(Type.PROTOBUF, 
TajoIdProtos.QueryIdProto.class.getName()));
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
     meta.putOption(StorageConstants.SEQUENCEFILE_SERDE, 
TextSerializerDeserializer.class.getName());
 
     Path tablePath = new Path(testDir, "testVariousTypes.data");
@@ -751,7 +751,7 @@ public class TestStorages {
 
   @Test
   public void testSequenceFileBinarySerializeDeserialize() throws IOException {
-    if(!storeType.equalsIgnoreCase(BuiltinStorages.SEQUENCE_FILE)) return;
+    if(!dataFormat.equalsIgnoreCase(BuiltinStorages.SEQUENCE_FILE)) return;
 
     Schema schema = new Schema();
     schema.addColumn("col1", Type.BOOLEAN);
@@ -769,7 +769,7 @@ public class TestStorages {
     schema.addColumn("col13", CatalogUtil.newDataType(Type.PROTOBUF, 
TajoIdProtos.QueryIdProto.class.getName()));
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
     meta.putOption(StorageConstants.SEQUENCEFILE_SERDE, 
BinarySerializerDeserializer.class.getName());
 
     Path tablePath = new Path(testDir, "testVariousTypes.data");
@@ -825,14 +825,14 @@ public class TestStorages {
 
   @Test
   public void testTime() throws IOException {
-    if (storeType.equalsIgnoreCase(BuiltinStorages.TEXT) || internalType) {
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.TEXT) || internalType) {
       Schema schema = new Schema();
       schema.addColumn("col1", Type.DATE);
       schema.addColumn("col2", Type.TIME);
       schema.addColumn("col3", Type.TIMESTAMP);
 
       KeyValueSet options = new KeyValueSet();
-      TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
+      TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
 
       Path tablePath = new Path(testDir, "testTime.data");
       FileTablespace sm = TablespaceManager.getLocalFs();
@@ -874,7 +874,7 @@ public class TestStorages {
     schema.addColumn("age", Type.INT8);
     schema.addColumn("comment", Type.TEXT);
 
-    TableMeta meta = CatalogUtil.newTableMeta(storeType);
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat);
     Path tablePath = new Path(testDir, "Seekable.data");
     FileTablespace sm = TablespaceManager.getLocalFs();
     FileAppender appender = (FileAppender) sm.getAppender(meta, schema, 
tablePath);
@@ -952,12 +952,12 @@ public class TestStorages {
     schema.addColumn("col5", Type.INT8);
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
-    if (storeType.equalsIgnoreCase(BuiltinStorages.AVRO)) {
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.AVRO)) {
       meta.putOption(StorageConstants.AVRO_SCHEMA_LITERAL, 
TEST_MAX_VALUE_AVRO_SCHEMA);
     }
 
-    if (storeType.equalsIgnoreCase(BuiltinStorages.RAW)) {
+    if (dataFormat.equalsIgnoreCase(BuiltinStorages.RAW)) {
       OldStorageManager.clearCache();
       /* TAJO-1250 reproduce BufferOverflow of RAWFile */
       int headerSize = 4 + 2 + 1; //Integer record length + Short null-flag 
length + 1 byte null flags
@@ -1006,9 +1006,9 @@ public class TestStorages {
   @Test
   public void testLessThanSchemaSize() throws IOException {
     /* Internal storage must be same with schema size */
-    if (internalType || storeType.equalsIgnoreCase(BuiltinStorages.AVRO)
-        || storeType.equalsIgnoreCase(BuiltinStorages.PARQUET)
-        || storeType.equalsIgnoreCase(BuiltinStorages.ORC)) {
+    if (internalType || dataFormat.equalsIgnoreCase(BuiltinStorages.AVRO)
+        || dataFormat.equalsIgnoreCase(BuiltinStorages.PARQUET)
+        || dataFormat.equalsIgnoreCase(BuiltinStorages.ORC)) {
       return;
     }
 
@@ -1018,8 +1018,8 @@ public class TestStorages {
     dataSchema.addColumn("col3", Type.INT2);
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
-    meta.setOptions(CatalogUtil.newDefaultProperty(storeType));
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
+    meta.setOptions(CatalogUtil.newDefaultProperty(dataFormat));
 
     Path tablePath = new Path(testDir, "testLessThanSchemaSize.data");
     FileTablespace sm = TablespaceManager.getLocalFs();
@@ -1071,10 +1071,10 @@ public class TestStorages {
 
   @Test
   public final void testInsertFixedCharTypeWithOverSize() throws Exception {
-    if (!storeType.equalsIgnoreCase(BuiltinStorages.TEXT) &&
-        !storeType.equalsIgnoreCase(BuiltinStorages.SEQUENCE_FILE) &&
-        !storeType.equalsIgnoreCase(BuiltinStorages.RCFILE) &&
-        !storeType.equalsIgnoreCase(BuiltinStorages.PARQUET)) {
+    if (!dataFormat.equalsIgnoreCase(BuiltinStorages.TEXT) &&
+        !dataFormat.equalsIgnoreCase(BuiltinStorages.SEQUENCE_FILE) &&
+        !dataFormat.equalsIgnoreCase(BuiltinStorages.RCFILE) &&
+        !dataFormat.equalsIgnoreCase(BuiltinStorages.PARQUET)) {
       return;
     }
 
@@ -1082,10 +1082,10 @@ public class TestStorages {
     dataSchema.addColumn("col1", Type.CHAR);
 
     KeyValueSet options = new KeyValueSet();
-    TableMeta meta = CatalogUtil.newTableMeta(storeType, options);
-    meta.setOptions(CatalogUtil.newDefaultProperty(storeType));
+    TableMeta meta = CatalogUtil.newTableMeta(dataFormat, options);
+    meta.setOptions(CatalogUtil.newDefaultProperty(dataFormat));
 
-    Path tablePath = new Path(testDir, "test_storetype_oversize.data");
+    Path tablePath = new Path(testDir, "test_dataformat_oversize.data");
     FileTablespace sm = TablespaceManager.getLocalFs();
     Appender appender = sm.getAppender(meta, dataSchema, tablePath);
     appender.init();

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestBSTIndex.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestBSTIndex.java
 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestBSTIndex.java
index 5437b0d..30cea60 100644
--- 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestBSTIndex.java
+++ 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestBSTIndex.java
@@ -54,10 +54,10 @@ public class TestBSTIndex {
   private static final String TEST_PATH = "target/test-data/TestIndex";
   private Path testDir;
   private FileSystem fs;
-  private String storeType;
+  private String dataFormat;
 
   public TestBSTIndex(String type) {
-    this.storeType = type;
+    this.dataFormat = type;
     conf = new TajoConf();
     conf.setVar(TajoConf.ConfVars.ROOT_DIR, TEST_PATH);
     schema = new Schema();
@@ -85,9 +85,9 @@ public class TestBSTIndex {
 
   @Test
   public void testFindValue() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testFindValue_" + storeType);
+    Path tablePath = new Path(testDir, "testFindValue_" + dataFormat);
     Appender appender = ((FileTablespace) TablespaceManager.getLocalFs())
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -118,13 +118,13 @@ public class TestBSTIndex {
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindValue_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindValue_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX,
         keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -146,9 +146,9 @@ public class TestBSTIndex {
     scanner.close();
 
     tuple = new VTuple(keySchema.size());
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindValue_" + storeType + ".idx"), keySchema, comp);
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindValue_" + dataFormat + ".idx"), keySchema, comp);
     reader.open();
-    scanner = OldStorageManager.getStorageManager(conf, meta.getStoreType()).
+    scanner = OldStorageManager.getStorageManager(conf, meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -176,9 +176,9 @@ public class TestBSTIndex {
 
   @Test
   public void testBuildIndexWithAppender() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testBuildIndexWithAppender_" + 
storeType);
+    Path tablePath = new Path(testDir, "testBuildIndexWithAppender_" + 
dataFormat);
     FileAppender appender = (FileAppender) ((FileTablespace) 
TablespaceManager.getLocalFs())
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -194,7 +194,7 @@ public class TestBSTIndex {
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testBuildIndexWithAppender_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testBuildIndexWithAppender_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
@@ -225,10 +225,10 @@ public class TestBSTIndex {
     FileFragment tablet = new FileFragment("table1_1", status.getPath(), 0, 
fileLen);
 
     tuple = new VTuple(keySchema.size());
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testBuildIndexWithAppender_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testBuildIndexWithAppender_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -256,9 +256,9 @@ public class TestBSTIndex {
 
   @Test
   public void testFindOmittedValue() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = StorageUtil.concatPath(testDir, "testFindOmittedValue_" + 
storeType);
+    Path tablePath = StorageUtil.concatPath(testDir, "testFindOmittedValue_" + 
dataFormat);
     Appender appender = ((FileTablespace) 
TablespaceManager.getLocalFs()).getAppender(meta, schema, tablePath);
     appender.init();
     Tuple tuple;
@@ -287,12 +287,12 @@ public class TestBSTIndex {
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindOmittedValue_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindOmittedValue_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -313,7 +313,7 @@ public class TestBSTIndex {
     creater.close();
     scanner.close();
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindOmittedValue_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindOmittedValue_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
     for (int i = 1; i < TUPLE_NUM - 1; i += 2) {
@@ -327,9 +327,9 @@ public class TestBSTIndex {
 
   @Test
   public void testFindNextKeyValue() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testFindNextKeyValue_" + storeType);
+    Path tablePath = new Path(testDir, "testFindNextKeyValue_" + dataFormat);
     Appender appender = ((FileTablespace) TablespaceManager.getLocalFs())
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -360,12 +360,12 @@ public class TestBSTIndex {
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindNextKeyValue_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindNextKeyValue_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -386,10 +386,10 @@ public class TestBSTIndex {
     creater.close();
     scanner.close();
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindNextKeyValue_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindNextKeyValue_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
-    scanner = OldStorageManager.getStorageManager(conf, meta.getStoreType()).
+    scanner = OldStorageManager.getStorageManager(conf, meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -420,9 +420,9 @@ public class TestBSTIndex {
 
   @Test
   public void testFindNextKeyOmittedValue() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testFindNextKeyOmittedValue_" + 
storeType);
+    Path tablePath = new Path(testDir, "testFindNextKeyOmittedValue_" + 
dataFormat);
     Appender appender = (((FileTablespace) TablespaceManager.getLocalFs()))
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -453,12 +453,12 @@ public class TestBSTIndex {
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindNextKeyOmittedValue_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindNextKeyOmittedValue_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -479,10 +479,10 @@ public class TestBSTIndex {
     creater.close();
     scanner.close();
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindNextKeyOmittedValue_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindNextKeyOmittedValue_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
-    scanner = OldStorageManager.getStorageManager(conf, meta.getStoreType()).
+    scanner = OldStorageManager.getStorageManager(conf, meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -502,9 +502,9 @@ public class TestBSTIndex {
 
   @Test
   public void testFindMinValue() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testFindMinValue" + storeType);
+    Path tablePath = new Path(testDir, "testFindMinValue" + dataFormat);
     Appender appender = ((FileTablespace) TablespaceManager.getLocalFs())
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -535,12 +535,12 @@ public class TestBSTIndex {
 
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindMinValue_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindMinValue_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -563,10 +563,10 @@ public class TestBSTIndex {
 
     tuple = new VTuple(keySchema.size());
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindMinValue_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindMinValue_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
-    scanner = OldStorageManager.getStorageManager(conf, meta.getStoreType()).
+    scanner = OldStorageManager.getStorageManager(conf, meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -588,9 +588,9 @@ public class TestBSTIndex {
 
   @Test
   public void testMinMax() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testMinMax_" + storeType);
+    Path tablePath = new Path(testDir, "testMinMax_" + dataFormat);
     Appender appender = ((FileTablespace) TablespaceManager.getLocalFs())
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -621,12 +621,12 @@ public class TestBSTIndex {
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testMinMax_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testMinMax_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -647,7 +647,7 @@ public class TestBSTIndex {
     creater.close();
     scanner.close();
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, "testMinMax_" 
+ storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, "testMinMax_" 
+ dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
 
@@ -694,9 +694,9 @@ public class TestBSTIndex {
 
   @Test
   public void testConcurrentAccess() throws IOException, InterruptedException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testConcurrentAccess_" + storeType);
+    Path tablePath = new Path(testDir, "testConcurrentAccess_" + dataFormat);
     Appender appender = ((FileTablespace) TablespaceManager.getLocalFs())
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -728,12 +728,12 @@ public class TestBSTIndex {
     BaseTupleComparator comp = new BaseTupleComparator(keySchema, sortKeys);
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testConcurrentAccess_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testConcurrentAccess_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -754,7 +754,7 @@ public class TestBSTIndex {
     creater.close();
     scanner.close();
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testConcurrentAccess_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testConcurrentAccess_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
 
@@ -776,9 +776,9 @@ public class TestBSTIndex {
 
   @Test
   public void testFindValueDescOrder() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testFindValueDescOrder_" + storeType);
+    Path tablePath = new Path(testDir, "testFindValueDescOrder_" + dataFormat);
     Appender appender = ((FileTablespace) TablespaceManager.getLocalFs())
         .getAppender(meta, schema, tablePath);
     appender.init();
@@ -811,12 +811,12 @@ public class TestBSTIndex {
 
 
     BSTIndex bst = new BSTIndex(conf);
-    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindValueDescOrder_" + storeType + ".idx"),
+    BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir, 
"testFindValueDescOrder_" + dataFormat + ".idx"),
         BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -839,10 +839,10 @@ public class TestBSTIndex {
 
     tuple = new VTuple(keySchema.size());
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindValueDescOrder_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindValueDescOrder_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
-    scanner = OldStorageManager.getStorageManager(conf, meta.getStoreType()).
+    scanner = OldStorageManager.getStorageManager(conf, meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -870,9 +870,9 @@ public class TestBSTIndex {
 
   @Test
   public void testFindNextKeyValueDescOrder() throws IOException {
-    meta = CatalogUtil.newTableMeta(storeType);
+    meta = CatalogUtil.newTableMeta(dataFormat);
 
-    Path tablePath = new Path(testDir, "testFindNextKeyValueDescOrder_" + 
storeType);
+    Path tablePath = new Path(testDir, "testFindNextKeyValueDescOrder_" + 
dataFormat);
     Appender appender = ((FileTablespace) 
TablespaceManager.getLocalFs()).getAppender(meta, schema, tablePath);
     appender.init();
 
@@ -904,11 +904,11 @@ public class TestBSTIndex {
 
     BSTIndex bst = new BSTIndex(conf);
     BSTIndexWriter creater = bst.getIndexWriter(new Path(testDir,
-        "testFindNextKeyValueDescOrder_" + storeType + ".idx"), 
BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
+        "testFindNextKeyValueDescOrder_" + dataFormat + ".idx"), 
BSTIndex.TWO_LEVEL_INDEX, keySchema, comp);
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType()).
+    SeekableScanner scanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 
@@ -930,14 +930,14 @@ public class TestBSTIndex {
     scanner.close();
 
 
-    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindNextKeyValueDescOrder_" + storeType + ".idx"),
+    BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"testFindNextKeyValueDescOrder_" + dataFormat + ".idx"),
         keySchema, comp);
     reader.open();
 
     assertEquals(keySchema, reader.getKeySchema());
     assertEquals(comp, reader.getComparator());
 
-    scanner = OldStorageManager.getStorageManager(conf, meta.getStoreType()).
+    scanner = OldStorageManager.getStorageManager(conf, meta.getDataFormat()).
         getSeekableScanner(meta, schema, tablet.getProto(), schema);
     scanner.init();
 

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestSingleCSVFileBSTIndex.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestSingleCSVFileBSTIndex.java
 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestSingleCSVFileBSTIndex.java
index a001492..8262073 100644
--- 
a/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestSingleCSVFileBSTIndex.java
+++ 
b/tajo-storage/tajo-storage-hdfs/src/test/java/org/apache/tajo/storage/index/TestSingleCSVFileBSTIndex.java
@@ -111,7 +111,7 @@ public class TestSingleCSVFileBSTIndex {
     creater.setLoadNum(LOAD_NUM);
     creater.open();
 
-    SeekableScanner fileScanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType())
+    SeekableScanner fileScanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat())
         .getSeekableScanner(meta, schema, tablet.getProto(), schema);
     fileScanner.init();
     Tuple keyTuple;
@@ -136,7 +136,7 @@ public class TestSingleCSVFileBSTIndex {
     BSTIndexReader reader = bst.getIndexReader(new Path(testDir,
         "FindValueInCSV.idx"), keySchema, comp);
     reader.open();
-    fileScanner = OldStorageManager.getStorageManager(conf, 
meta.getStoreType())
+    fileScanner = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat())
         .getSeekableScanner(meta, schema, tablet.getProto(), schema);
     fileScanner.init();
     for (int i = 0; i < TUPLE_NUM - 1; i++) {
@@ -202,7 +202,7 @@ public class TestSingleCSVFileBSTIndex {
     creater.setLoadNum(LOAD_NUM);
     creater.open();
     
-    SeekableScanner fileScanner  = OldStorageManager.getStorageManager(conf, 
meta.getStoreType())
+    SeekableScanner fileScanner  = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat())
         .getSeekableScanner(meta, schema, tablet.getProto(), schema);
     fileScanner.init();
     Tuple keyTuple;
@@ -224,7 +224,7 @@ public class TestSingleCSVFileBSTIndex {
     
     BSTIndexReader reader = bst.getIndexReader(new Path(testDir, 
"FindNextKeyValueInCSV.idx"), keySchema, comp);
     reader.open();
-    fileScanner  = OldStorageManager.getStorageManager(conf, 
meta.getStoreType())
+    fileScanner  = OldStorageManager.getStorageManager(conf, 
meta.getDataFormat())
         .getSeekableScanner(meta, schema, tablet.getProto(), schema);
     fileScanner.init();
     Tuple result;

http://git-wip-us.apache.org/repos/asf/tajo/blob/b418c499/tajo-storage/tajo-storage-jdbc/src/main/java/org/apache/tajo/storage/jdbc/JdbcFragment.java
----------------------------------------------------------------------
diff --git 
a/tajo-storage/tajo-storage-jdbc/src/main/java/org/apache/tajo/storage/jdbc/JdbcFragment.java
 
b/tajo-storage/tajo-storage-jdbc/src/main/java/org/apache/tajo/storage/jdbc/JdbcFragment.java
index bf9536e..1c963fd 100644
--- 
a/tajo-storage/tajo-storage-jdbc/src/main/java/org/apache/tajo/storage/jdbc/JdbcFragment.java
+++ 
b/tajo-storage/tajo-storage-jdbc/src/main/java/org/apache/tajo/storage/jdbc/JdbcFragment.java
@@ -94,7 +94,7 @@ public class JdbcFragment implements Fragment, 
Comparable<JdbcFragment>, Cloneab
 
     CatalogProtos.FragmentProto.Builder fragmentBuilder = 
CatalogProtos.FragmentProto.newBuilder();
     fragmentBuilder.setId(this.inputSourceId);
-    fragmentBuilder.setStoreType("JDBC");
+    fragmentBuilder.setDataFormat("JDBC");
     fragmentBuilder.setContents(builder.buildPartial().toByteString());
     return fragmentBuilder.build();
   }

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