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Posted to commits@drill.apache.org by am...@apache.org on 2017/09/05 04:38:55 UTC

[1/4] drill git commit: DRILL-4264: Allow field names to include dots

Repository: drill
Updated Branches:
  refs/heads/master e57514aad -> d105950a7


http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t2.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t2.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t2.requires_replace.txt
new file mode 100644
index 0000000..b611d13
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t2.requires_replace.txt
@@ -0,0 +1,76 @@
+{
+  "metadata_version" : "3.1",
+  "columnTypeInfo" : {
+    "n_name" : {
+      "name" : [ "n_name" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_nationkey" : {
+      "name" : [ "n_nationkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_regionkey" : {
+      "name" : [ "n_regionkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_comment" : {
+      "name" : [ "n_comment" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    }
+  },
+  "files" : [ {
+    "path" : "0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  } ],
+  "directories" : [ ],
+  "drillVersion" : "1.12.0-SNAPSHOT"
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_directories_with_absolute_paths.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_directories_with_absolute_paths.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_directories_with_absolute_paths.requires_replace.txt
deleted file mode 100644
index 8a9989d..0000000
--- a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_directories_with_absolute_paths.requires_replace.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-  "directories" : [ "file:REPLACED_IN_TEST/absolute_paths_metadata/t1", "file:REPLACED_IN_TEST/absolute_paths_metadata/t2" ]
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths.requires_replace.txt
deleted file mode 100644
index e3734f3..0000000
--- a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths.requires_replace.txt
+++ /dev/null
@@ -1,108 +0,0 @@
-{
-  "metadata_version" : "v3",
-  "columnTypeInfo" : {
-    "n_name" : {
-      "name" : [ "n_name" ],
-      "primitiveType" : "BINARY",
-      "originalType" : "UTF8",
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_nationkey" : {
-      "name" : [ "n_nationkey" ],
-      "primitiveType" : "INT32",
-      "originalType" : null,
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_regionkey" : {
-      "name" : [ "n_regionkey" ],
-      "primitiveType" : "INT32",
-      "originalType" : null,
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_comment" : {
-      "name" : [ "n_comment" ],
-      "primitiveType" : "BINARY",
-      "originalType" : "UTF8",
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    }
-  },
-  "files" : [ {
-    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t1/0_0_0.parquet",
-    "length" : 2424,
-    "rowGroups" : [ {
-      "start" : 4,
-      "length" : 1802,
-      "rowCount" : 25,
-      "hostAffinity" : {
-        "localhost" : 1.0
-      },
-      "columns" : [ {
-        "name" : [ "n_nationkey" ],
-        "minValue" : 0,
-        "maxValue" : 24,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_name" ],
-        "minValue" : "ALGERIA",
-        "maxValue" : "VIETNAM",
-        "nulls" : 0
-      }, {
-        "name" : [ "n_regionkey" ],
-        "minValue" : 0,
-        "maxValue" : 4,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_comment" ],
-        "minValue" : " haggle. carefully final deposits detect slyly agai",
-        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
-        "nulls" : 0
-      } ]
-    } ]
-  }, {
-    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t2/0_0_0.parquet",
-    "length" : 2424,
-    "rowGroups" : [ {
-      "start" : 4,
-      "length" : 1802,
-      "rowCount" : 25,
-      "hostAffinity" : {
-        "localhost" : 1.0
-      },
-      "columns" : [ {
-        "name" : [ "n_nationkey" ],
-        "minValue" : 0,
-        "maxValue" : 24,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_name" ],
-        "minValue" : "ALGERIA",
-        "maxValue" : "VIETNAM",
-        "nulls" : 0
-      }, {
-        "name" : [ "n_regionkey" ],
-        "minValue" : 0,
-        "maxValue" : 4,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_comment" ],
-        "minValue" : " haggle. carefully final deposits detect slyly agai",
-        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
-        "nulls" : 0
-      } ]
-    } ]
-  } ],
-  "directories" : [ "file:REPLACED_IN_TEST/absolute_paths_metadata/t1", "file:REPLACED_IN_TEST/absolute_paths_metadata/t2" ],
-  "drillVersion" : "1.11.0"
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t1.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t1.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t1.requires_replace.txt
deleted file mode 100644
index 62a8c80..0000000
--- a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t1.requires_replace.txt
+++ /dev/null
@@ -1,76 +0,0 @@
-{
-  "metadata_version" : "v3",
-  "columnTypeInfo" : {
-    "n_name" : {
-      "name" : [ "n_name" ],
-      "primitiveType" : "BINARY",
-      "originalType" : "UTF8",
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_nationkey" : {
-      "name" : [ "n_nationkey" ],
-      "primitiveType" : "INT32",
-      "originalType" : null,
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_regionkey" : {
-      "name" : [ "n_regionkey" ],
-      "primitiveType" : "INT32",
-      "originalType" : null,
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_comment" : {
-      "name" : [ "n_comment" ],
-      "primitiveType" : "BINARY",
-      "originalType" : "UTF8",
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    }
-  },
-  "files" : [ {
-    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t1/0_0_0.parquet",
-    "length" : 2424,
-    "rowGroups" : [ {
-      "start" : 4,
-      "length" : 1802,
-      "rowCount" : 25,
-      "hostAffinity" : {
-        "localhost" : 1.0
-      },
-      "columns" : [ {
-        "name" : [ "n_nationkey" ],
-        "minValue" : 0,
-        "maxValue" : 24,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_name" ],
-        "minValue" : "ALGERIA",
-        "maxValue" : "VIETNAM",
-        "nulls" : 0
-      }, {
-        "name" : [ "n_regionkey" ],
-        "minValue" : 0,
-        "maxValue" : 4,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_comment" ],
-        "minValue" : " haggle. carefully final deposits detect slyly agai",
-        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
-        "nulls" : 0
-      } ]
-    } ]
-  } ],
-  "directories" : [ ],
-  "drillVersion" : "1.11.0"
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t2.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t2.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t2.requires_replace.txt
deleted file mode 100644
index b70c8fa..0000000
--- a/exec/java-exec/src/test/resources/parquet/metadata_with_absolute_path/metadata_table_with_absolute_paths_t2.requires_replace.txt
+++ /dev/null
@@ -1,76 +0,0 @@
-{
-  "metadata_version" : "v3",
-  "columnTypeInfo" : {
-    "n_name" : {
-      "name" : [ "n_name" ],
-      "primitiveType" : "BINARY",
-      "originalType" : "UTF8",
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_nationkey" : {
-      "name" : [ "n_nationkey" ],
-      "primitiveType" : "INT32",
-      "originalType" : null,
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_regionkey" : {
-      "name" : [ "n_regionkey" ],
-      "primitiveType" : "INT32",
-      "originalType" : null,
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    },
-    "n_comment" : {
-      "name" : [ "n_comment" ],
-      "primitiveType" : "BINARY",
-      "originalType" : "UTF8",
-      "precision" : 0,
-      "scale" : 0,
-      "repetitionLevel" : 0,
-      "definitionLevel" : 0
-    }
-  },
-  "files" : [ {
-    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t2/0_0_0.parquet",
-    "length" : 2424,
-    "rowGroups" : [ {
-      "start" : 4,
-      "length" : 1802,
-      "rowCount" : 25,
-      "hostAffinity" : {
-        "localhost" : 1.0
-      },
-      "columns" : [ {
-        "name" : [ "n_nationkey" ],
-        "minValue" : 0,
-        "maxValue" : 24,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_name" ],
-        "minValue" : "ALGERIA",
-        "maxValue" : "VIETNAM",
-        "nulls" : 0
-      }, {
-        "name" : [ "n_regionkey" ],
-        "minValue" : 0,
-        "maxValue" : 4,
-        "nulls" : 0
-      }, {
-        "name" : [ "n_comment" ],
-        "minValue" : " haggle. carefully final deposits detect slyly agai",
-        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
-        "nulls" : 0
-      } ]
-    } ]
-  } ],
-  "directories" : [ ],
-  "drillVersion" : "1.11.0"
-}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/store/parquet/complex/baseline8.json
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/store/parquet/complex/baseline8.json b/exec/java-exec/src/test/resources/store/parquet/complex/baseline8.json
index 290d896..095ef11 100644
--- a/exec/java-exec/src/test/resources/store/parquet/complex/baseline8.json
+++ b/exec/java-exec/src/test/resources/store/parquet/complex/baseline8.json
@@ -1,16 +1,21 @@
 {
-  "notexists" : null,
-  "id" : 4
+  "notexists1" : null,
+  "id" : 4,
+  "notexists2" : null
 } {
-  "notexists" : null,
-  "id" : 6
+  "notexists1" : null,
+  "id" : 6,
+  "notexists2" : null
 } {
-  "notexists" : null,
-  "id" : 17
+  "notexists1" : null,
+  "id" : 17,
+  "notexists2" : null
 } {
-  "notexists" : null,
-  "id" : 17
+  "notexists1" : null,
+  "id" : 17,
+  "notexists2" : null
 } {
-  "notexists" : null,
-  "id" : 8
+  "notexists1" : null,
+  "id" : 8,
+  "notexists2" : null
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/jdbc/src/main/java/org/apache/drill/jdbc/impl/DrillColumnMetaDataList.java
----------------------------------------------------------------------
diff --git a/exec/jdbc/src/main/java/org/apache/drill/jdbc/impl/DrillColumnMetaDataList.java b/exec/jdbc/src/main/java/org/apache/drill/jdbc/impl/DrillColumnMetaDataList.java
index 79007bb..90dcafe 100644
--- a/exec/jdbc/src/main/java/org/apache/drill/jdbc/impl/DrillColumnMetaDataList.java
+++ b/exec/jdbc/src/main/java/org/apache/drill/jdbc/impl/DrillColumnMetaDataList.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -118,9 +118,9 @@ public class DrillColumnMetaDataList extends BasicList<ColumnMetaData>{
         new ArrayList<>(schema.getFieldCount());
     for (int colOffset = 0; colOffset < schema.getFieldCount(); colOffset++) {
       final MaterializedField field = schema.getColumn(colOffset);
-      Class<?> objectClass = getObjectClasses.get( colOffset );
+      Class<?> objectClass = getObjectClasses.get(colOffset);
 
-      final String columnName = field.getPath();
+      final String columnName = field.getName();
 
       final MajorType rpcDataType = field.getType();
       final AvaticaType bundledSqlDataType = getAvaticaType(rpcDataType);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/jdbc/src/test/java/org/apache/drill/jdbc/DrillColumnMetaDataListTest.java
----------------------------------------------------------------------
diff --git a/exec/jdbc/src/test/java/org/apache/drill/jdbc/DrillColumnMetaDataListTest.java b/exec/jdbc/src/test/java/org/apache/drill/jdbc/DrillColumnMetaDataListTest.java
index 9bd8502..be21d3b 100644
--- a/exec/jdbc/src/test/java/org/apache/drill/jdbc/DrillColumnMetaDataListTest.java
+++ b/exec/jdbc/src/test/java/org/apache/drill/jdbc/DrillColumnMetaDataListTest.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -68,13 +68,13 @@ public class DrillColumnMetaDataListTest {
     // Create mock columns
     final MaterializedField exampleIntField = mock(MaterializedField.class);
     MajorType exampleIntType = MajorType.newBuilder().setMinorType(MinorType.INT).build();
-    when(exampleIntField.getPath()).thenReturn("/path/to/testInt");
+    when(exampleIntField.getName()).thenReturn("/path/to/testInt");
     when(exampleIntField.getType()).thenReturn(exampleIntType);
     when(exampleIntField.getDataMode()).thenReturn(DataMode.OPTIONAL);
 
     final MaterializedField exampleStringField = mock(MaterializedField.class);
     MajorType exampleStringType = MajorType.newBuilder().setMinorType(MinorType.VARCHAR).build();
-    when(exampleStringField.getPath()).thenReturn("/path/to/testString");
+    when(exampleStringField.getName()).thenReturn("/path/to/testString");
     when(exampleStringField.getType()).thenReturn(exampleStringType);
     when(exampleStringField.getDataMode()).thenReturn(DataMode.REQUIRED);
 

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/codegen/templates/FixedValueVectors.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/codegen/templates/FixedValueVectors.java b/exec/vector/src/main/codegen/templates/FixedValueVectors.java
index e8cdcf8..bbda672 100644
--- a/exec/vector/src/main/codegen/templates/FixedValueVectors.java
+++ b/exec/vector/src/main/codegen/templates/FixedValueVectors.java
@@ -220,7 +220,8 @@ public final class ${minor.class}Vector extends BaseDataValueVector implements F
 
   @Override
   public void load(SerializedField metadata, DrillBuf buffer) {
-    Preconditions.checkArgument(this.field.getPath().equals(metadata.getNamePart().getName()), "The field %s doesn't match the provided metadata %s.", this.field, metadata);
+    Preconditions.checkArgument(this.field.getName().equals(metadata.getNamePart().getName()),
+                                "The field %s doesn't match the provided metadata %s.", this.field, metadata);
     final int actualLength = metadata.getBufferLength();
     final int valueCount = metadata.getValueCount();
     final int expectedLength = valueCount * VALUE_WIDTH;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/record/MaterializedField.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/record/MaterializedField.java b/exec/vector/src/main/java/org/apache/drill/exec/record/MaterializedField.java
index bc1ec3a..1ecedc6 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/record/MaterializedField.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/record/MaterializedField.java
@@ -47,7 +47,7 @@ public class MaterializedField {
     this.children = children;
   }
 
-  public static MaterializedField create(SerializedField serField){
+  public static MaterializedField create(SerializedField serField) {
     LinkedHashSet<MaterializedField> children = new LinkedHashSet<>();
     for (SerializedField sf : serField.getChildList()) {
       children.add(MaterializedField.create(sf));
@@ -66,7 +66,7 @@ public class MaterializedField {
     return serializedFieldBuilder.build();
   }
 
-  public SerializedField.Builder getAsBuilder(){
+  public SerializedField.Builder getAsBuilder() {
     return SerializedField.newBuilder()
         .setMajorType(type)
         .setNamePart(NamePart.newBuilder().setName(name).build());
@@ -82,7 +82,7 @@ public class MaterializedField {
     return newField;
   }
 
-  public void addChild(MaterializedField field){
+  public void addChild(MaterializedField field) {
     children.add(field);
   }
 
@@ -106,47 +106,16 @@ public class MaterializedField {
     return new MaterializedField(name, type, newChildren);
   }
 
-//  public String getLastName(){
-//    PathSegment seg = key.path.getRootSegment();
-//    while (seg.getChild() != null) {
-//      seg = seg.getChild();
-//    }
-//    return seg.getNameSegment().getPath();
-//  }
-
   // TODO: rewrite without as direct match rather than conversion then match.
-  public boolean matches(SerializedField field){
+  public boolean matches(SerializedField field) {
     MaterializedField f = create(field);
     return f.equals(this);
   }
 
-  public static MaterializedField create(String name, MajorType type){
+  public static MaterializedField create(String name, MajorType type) {
     return new MaterializedField(name, type, new LinkedHashSet<MaterializedField>());
   }
 
-//  public String getName(){
-//    StringBuilder sb = new StringBuilder();
-//    boolean first = true;
-//    for(NamePart np : def.getNameList()){
-//      if(np.getType() == Type.ARRAY){
-//        sb.append("[]");
-//      }else{
-//        if(first){
-//          first = false;
-//        }else{
-//          sb.append(".");
-//        }
-//        sb.append('`');
-//        sb.append(np.getName());
-//        sb.append('`');
-//
-//      }
-//    }
-//    return sb.toString();
-//  }
-
-  public String getPath() { return getName(); }
-  public String getLastName() { return getName(); }
   public String getName() { return name; }
   public int getWidth() { return type.getWidth(); }
   public MajorType getType() { return type; }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/BaseValueVector.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/BaseValueVector.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/BaseValueVector.java
index 2179829..2b6fde0 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/BaseValueVector.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/BaseValueVector.java
@@ -71,13 +71,13 @@ public abstract class BaseValueVector implements ValueVector {
     return field;
   }
 
-  public MaterializedField getField(String ref){
+  public MaterializedField getField(String ref) {
     return getField().withPath(ref);
   }
 
   @Override
   public TransferPair getTransferPair(BufferAllocator allocator) {
-    return getTransferPair(getField().getPath(), allocator);
+    return getTransferPair(getField().getName(), allocator);
   }
 
   @Override

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/BitVector.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/BitVector.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/BitVector.java
index 4d7098b..f879fc4 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/BitVector.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/BitVector.java
@@ -221,7 +221,8 @@ public final class BitVector extends BaseDataValueVector implements FixedWidthVe
 
   @Override
   public void load(SerializedField metadata, DrillBuf buffer) {
-    Preconditions.checkArgument(this.field.getPath().equals(metadata.getNamePart().getName()), "The field %s doesn't match the provided metadata %s.", this.field, metadata);
+    Preconditions.checkArgument(this.field.getName().equals(metadata.getNamePart().getName()),
+                                "The field %s doesn't match the provided metadata %s.", this.field, metadata);
     final int valueCount = metadata.getValueCount();
     final int expectedLength = getSizeFromCount(valueCount);
     final int actualLength = metadata.getBufferLength();
@@ -280,7 +281,7 @@ public final class BitVector extends BaseDataValueVector implements FixedWidthVe
       if (target.data != null) {
         target.data.release();
       }
-      target.data = (DrillBuf) data.slice(firstByte, byteSize);
+      target.data = data.slice(firstByte, byteSize);
       target.data.retain(1);
     } else {
       // Copy data

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/VectorDescriptor.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/VectorDescriptor.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/VectorDescriptor.java
index dc8928e..7f1a3a6 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/VectorDescriptor.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/VectorDescriptor.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -49,7 +49,7 @@ public class VectorDescriptor {
   }
 
   public String getName() {
-    return field.getLastName();
+    return field.getName();
   }
 
   public Collection<MaterializedField> getChildren() {
@@ -57,7 +57,7 @@ public class VectorDescriptor {
   }
 
   public boolean hasName() {
-    return getName() != DEFAULT_NAME;
+    return !DEFAULT_NAME.equals(getName());
   }
 
   public VectorDescriptor withName(final String name) {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleAccessor.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleAccessor.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleAccessor.java
index 2ebb32c..ea9b869 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleAccessor.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleAccessor.java
@@ -48,8 +48,20 @@ public interface TupleAccessor {
 
     MaterializedField column(int index);
 
+    /**
+     * Returns {@code MaterializedField} instance from schema using the name specified in param.
+     *
+     * @param name name of the column in the schema
+     * @return {@code MaterializedField} instance
+     */
     MaterializedField column(String name);
 
+    /**
+     * Returns index of the column in the schema with name specified in param.
+     *
+     * @param name name of the column in the schema
+     * @return index of the column in the schema
+     */
     int columnIndex(String name);
 
     int count();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleReader.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleReader.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleReader.java
index 57425af..acca767 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleReader.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleReader.java
@@ -27,6 +27,13 @@ package org.apache.drill.exec.vector.accessor;
 
 public interface TupleReader extends TupleAccessor {
   ColumnReader column(int colIndex);
+
+  /**
+   * Returns column reader for the column with name specified in param.
+   *
+   * @param colName name of the column in the schema
+   * @return column reader
+   */
   ColumnReader column(String colName);
   Object get(int colIndex);
   String getAsString(int colIndex);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleWriter.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleWriter.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleWriter.java
index 59eca79..563734e 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleWriter.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/TupleWriter.java
@@ -29,6 +29,13 @@ package org.apache.drill.exec.vector.accessor;
 
 public interface TupleWriter extends TupleAccessor {
   ColumnWriter column(int colIndex);
+
+  /**
+   * Returns column writer for the column with name specified in param.
+   *
+   * @param colName name of the column in the schema
+   * @return column writer
+   */
   ColumnWriter column(String colName);
   void set(int colIndex, Object value);
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
index 2c5baa3..d5b66f9 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractContainerVector.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -88,7 +88,7 @@ public abstract class AbstractContainerVector implements ValueVector {
       @Nullable
       @Override
       public String apply(MaterializedField field) {
-        return Preconditions.checkNotNull(field).getLastName();
+        return Preconditions.checkNotNull(field).getName();
       }
     }));
   }
@@ -96,9 +96,9 @@ public abstract class AbstractContainerVector implements ValueVector {
   /**
    * Clears out all underlying child vectors.
    */
- @Override
+  @Override
   public void close() {
-    for (ValueVector vector:(Iterable<ValueVector>)this) {
+    for (ValueVector vector : this) {
       vector.close();
     }
   }
@@ -112,14 +112,14 @@ public abstract class AbstractContainerVector implements ValueVector {
   }
 
   MajorType getLastPathType() {
-    if((this.getField().getType().getMinorType() == MinorType.LIST  &&
+    if ((this.getField().getType().getMinorType() == MinorType.LIST &&
         this.getField().getType().getMode() == DataMode.REPEATED)) {  // Use Repeated scalar type instead of Required List.
       VectorWithOrdinal vord = getChildVectorWithOrdinal(null);
       ValueVector v = vord.vector;
-      if (! (v instanceof  AbstractContainerVector)) {
+      if (!(v instanceof AbstractContainerVector)) {
         return v.getField().getType();
       }
-    } else if (this.getField().getType().getMinorType() == MinorType.MAP  &&
+    } else if (this.getField().getType().getMinorType() == MinorType.MAP &&
         this.getField().getType().getMode() == DataMode.REPEATED) {  // Use Required Map
       return this.getField().getType().toBuilder().setMode(DataMode.REQUIRED).build();
     }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractMapVector.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractMapVector.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractMapVector.java
index 30db41e..6b60471 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractMapVector.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/AbstractMapVector.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -43,7 +43,7 @@ public abstract class AbstractMapVector extends AbstractContainerVector {
   private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(AbstractContainerVector.class);
 
   // Maintains a map with key as field name and value is the vector itself
-  private final MapWithOrdinal<String, ValueVector> vectors =  new MapWithOrdinal<>();
+  private final MapWithOrdinal<String, ValueVector> vectors = new MapWithOrdinal<>();
 
   protected AbstractMapVector(MaterializedField field, BufferAllocator allocator, CallBack callBack) {
     super(field.clone(), allocator, callBack);
@@ -51,7 +51,7 @@ public abstract class AbstractMapVector extends AbstractContainerVector {
     // create the hierarchy of the child vectors based on the materialized field
     for (MaterializedField child : clonedField.getChildren()) {
       if (!child.equals(BaseRepeatedValueVector.OFFSETS_FIELD)) {
-        final String fieldName = child.getLastName();
+        final String fieldName = child.getName();
         final ValueVector v = BasicTypeHelper.getNewVector(child, allocator, callBack);
         putVector(fieldName, v);
       }
@@ -60,7 +60,7 @@ public abstract class AbstractMapVector extends AbstractContainerVector {
 
   @Override
   public void close() {
-    for(final ValueVector valueVector : vectors.values()) {
+    for (final ValueVector valueVector : vectors.values()) {
       valueVector.close();
     }
     vectors.clear();
@@ -135,7 +135,7 @@ public abstract class AbstractMapVector extends AbstractContainerVector {
     if (create) {
       final T vector = (T) BasicTypeHelper.getNewVector(name, allocator, type, callBack);
       putChild(name, vector);
-      if (callBack!=null) {
+      if (callBack != null) {
         callBack.doWork();
       }
       return vector;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/ListVector.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/ListVector.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/ListVector.java
index c61fd00..9569946 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/ListVector.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/ListVector.java
@@ -14,7 +14,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- ******************************************************************************/
+ */
 package org.apache.drill.exec.vector.complex;
 
 import com.google.common.collect.ObjectArrays;
@@ -259,7 +259,7 @@ public class ListVector extends BaseRepeatedValueVector {
   }
 
   public UnionVector promoteToUnion() {
-    MaterializedField newField = MaterializedField.create(getField().getPath(), Types.optional(MinorType.UNION));
+    MaterializedField newField = MaterializedField.create(getField().getName(), Types.optional(MinorType.UNION));
     UnionVector vector = new UnionVector(newField, allocator, null);
     replaceDataVector(vector);
     reader = new UnionListReader(this);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
index f9ff58d..19c910b 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/MapVector.java
@@ -105,7 +105,7 @@ public class MapVector extends AbstractMapVector {
 
   @Override
   public void setInitialCapacity(int numRecords) {
-    for (final ValueVector v : (Iterable<ValueVector>) this) {
+    for (final ValueVector v : this) {
       v.setInitialCapacity(numRecords);
     }
   }
@@ -116,7 +116,7 @@ public class MapVector extends AbstractMapVector {
       return 0;
     }
     long buffer = 0;
-    for (final ValueVector v : (Iterable<ValueVector>)this) {
+    for (final ValueVector v : this) {
       buffer += v.getBufferSize();
     }
 
@@ -130,7 +130,7 @@ public class MapVector extends AbstractMapVector {
     }
 
     long bufferSize = 0;
-    for (final ValueVector v : (Iterable<ValueVector>) this) {
+    for (final ValueVector v : this) {
       bufferSize += v.getBufferSizeFor(valueCount);
     }
 
@@ -147,7 +147,7 @@ public class MapVector extends AbstractMapVector {
 
   @Override
   public TransferPair getTransferPair(BufferAllocator allocator) {
-    return new MapTransferPair(this, getField().getPath(), allocator);
+    return new MapTransferPair(this, getField().getName(), allocator);
   }
 
   @Override
@@ -268,11 +268,11 @@ public class MapVector extends AbstractMapVector {
     for (final SerializedField child : fields) {
       final MaterializedField fieldDef = MaterializedField.create(child);
 
-      ValueVector vector = getChild(fieldDef.getLastName());
+      ValueVector vector = getChild(fieldDef.getName());
       if (vector == null) {
         // if we arrive here, we didn't have a matching vector.
         vector = BasicTypeHelper.getNewVector(fieldDef, allocator);
-        putChild(fieldDef.getLastName(), vector);
+        putChild(fieldDef.getName(), vector);
       }
       if (child.getValueCount() == 0) {
         vector.clear();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
index 999e29e..ae1f0b1 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/RepeatedMapVector.java
@@ -88,7 +88,7 @@ public class RepeatedMapVector extends AbstractMapVector
   @Override
   public void setInitialCapacity(int numRecords) {
     offsets.setInitialCapacity(numRecords + 1);
-    for(final ValueVector v : (Iterable<ValueVector>) this) {
+    for (final ValueVector v : this) {
       v.setInitialCapacity(numRecords * RepeatedValueVector.DEFAULT_REPEAT_PER_RECORD);
     }
   }
@@ -159,7 +159,7 @@ public class RepeatedMapVector extends AbstractMapVector
 
   @Override
   public TransferPair getTransferPair(BufferAllocator allocator) {
-    return new RepeatedMapTransferPair(this, getField().getPath(), allocator);
+    return new RepeatedMapTransferPair(this, getField().getName(), allocator);
   }
 
   @Override
@@ -442,11 +442,11 @@ public class RepeatedMapVector extends AbstractMapVector
     for (int i = 1; i < children.size(); i++) {
       final SerializedField child = children.get(i);
       final MaterializedField fieldDef = MaterializedField.create(child);
-      ValueVector vector = getChild(fieldDef.getLastName());
+      ValueVector vector = getChild(fieldDef.getName());
       if (vector == null) {
         // if we arrive here, we didn't have a matching vector.
         vector = BasicTypeHelper.getNewVector(fieldDef, allocator);
-        putChild(fieldDef.getLastName(), vector);
+        putChild(fieldDef.getName(), vector);
       }
       final int vectorLength = child.getBufferLength();
       vector.load(child, buffer.slice(bufOffset, vectorLength));
@@ -486,7 +486,7 @@ public class RepeatedMapVector extends AbstractMapVector
         final Map<String, Object> vv = Maps.newLinkedHashMap();
         for (final MaterializedField field : getField().getChildren()) {
           if (!field.equals(BaseRepeatedValueVector.OFFSETS_FIELD)) {
-            fieldName = field.getLastName();
+            fieldName = field.getName();
             final Object value = getChild(fieldName).getAccessor().getObject(i);
             if (value != null) {
               vv.put(fieldName, value);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/impl/PromotableWriter.java
----------------------------------------------------------------------
diff --git a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/impl/PromotableWriter.java b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/impl/PromotableWriter.java
index dbbd092..10ac551 100644
--- a/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/impl/PromotableWriter.java
+++ b/exec/vector/src/main/java/org/apache/drill/exec/vector/complex/impl/PromotableWriter.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -149,7 +149,7 @@ public class PromotableWriter extends AbstractPromotableFieldWriter {
   }
 
   private FieldWriter promoteToUnion() {
-    String name = vector.getField().getLastName();
+    String name = vector.getField().getName();
     TransferPair tp = vector.getTransferPair(vector.getField().getType().getMinorType().name().toLowerCase(), vector.getAllocator());
     tp.transfer();
     if (parentContainer != null) {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/logical/src/main/java/org/apache/drill/common/expression/FieldReference.java
----------------------------------------------------------------------
diff --git a/logical/src/main/java/org/apache/drill/common/expression/FieldReference.java b/logical/src/main/java/org/apache/drill/common/expression/FieldReference.java
index ba3bf7a..967ca9e 100644
--- a/logical/src/main/java/org/apache/drill/common/expression/FieldReference.java
+++ b/logical/src/main/java/org/apache/drill/common/expression/FieldReference.java
@@ -51,19 +51,8 @@ public class FieldReference extends SchemaPath {
     }
   }
 
-  private void checkSimpleString(CharSequence value) {
-    if (value.toString().contains(".")) {
-      throw new UnsupportedOperationException(
-          String.format(
-              "Unhandled field reference \"%s\"; a field reference identifier"
-              + " must not have the form of a qualified name (i.e., with \".\").",
-              value));
-    }
-  }
-
   public FieldReference(CharSequence value) {
     this(value, ExpressionPosition.UNKNOWN);
-    checkSimpleString(value);
   }
 
   /**
@@ -87,7 +76,6 @@ public class FieldReference extends SchemaPath {
     super(new NameSegment(value), pos);
     if (check) {
       checkData();
-      checkSimpleString(value);
     }
   }
 
@@ -117,7 +105,7 @@ public class FieldReference extends SchemaPath {
         JsonProcessingException {
       String ref = this._parseString(jp, ctxt);
       ref = ref.replace("`", "");
-      return new FieldReference(ref, ExpressionPosition.UNKNOWN, false);
+      return new FieldReference(ref, ExpressionPosition.UNKNOWN, true);
     }
   }
 

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/logical/src/main/java/org/apache/drill/common/expression/PathSegment.java
----------------------------------------------------------------------
diff --git a/logical/src/main/java/org/apache/drill/common/expression/PathSegment.java b/logical/src/main/java/org/apache/drill/common/expression/PathSegment.java
index 744a07f..16bb255 100644
--- a/logical/src/main/java/org/apache/drill/common/expression/PathSegment.java
+++ b/logical/src/main/java/org/apache/drill/common/expression/PathSegment.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -17,11 +17,15 @@
  */
 package org.apache.drill.common.expression;
 
-public abstract class PathSegment{
+public abstract class PathSegment {
 
-  PathSegment child;
+  private PathSegment child;
 
-  int hash;
+  private int hash;
+
+  public PathSegment(PathSegment child) {
+    this.child = child;
+  }
 
   public abstract PathSegment cloneWithNewChild(PathSegment segment);
   @Override
@@ -35,13 +39,13 @@ public abstract class PathSegment{
     }
 
     public ArraySegment(int index, PathSegment child) {
-      this.child = child;
+      super(child);
       this.index = index;
-      assert index >=0;
+      assert index >= 0;
     }
 
     public ArraySegment(PathSegment child) {
-      this.child = child;
+      super(child);
       this.index = -1;
     }
 
@@ -50,6 +54,7 @@ public abstract class PathSegment{
     }
 
     public ArraySegment(int index) {
+      super(null);
       if (index < 0 ) {
         throw new IllegalArgumentException();
       }
@@ -100,8 +105,8 @@ public abstract class PathSegment{
     @Override
     public PathSegment clone() {
       PathSegment seg = index < 0 ? new ArraySegment(null) : new ArraySegment(index);
-      if (child != null) {
-        seg.setChild(child.clone());
+      if (getChild() != null) {
+        seg.setChild(getChild().clone());
       }
       return seg;
     }
@@ -109,8 +114,8 @@ public abstract class PathSegment{
     @Override
     public ArraySegment cloneWithNewChild(PathSegment newChild) {
       ArraySegment seg = index < 0 ? new ArraySegment(null) : new ArraySegment(index);
-      if (child != null) {
-        seg.setChild(child.cloneWithNewChild(newChild));
+      if (getChild() != null) {
+        seg.setChild(getChild().cloneWithNewChild(newChild));
       } else {
         seg.setChild(newChild);
       }
@@ -123,11 +128,12 @@ public abstract class PathSegment{
     private final String path;
 
     public NameSegment(CharSequence n, PathSegment child) {
-      this.child = child;
+      super(child);
       this.path = n.toString();
     }
 
     public NameSegment(CharSequence n) {
+      super(null);
       this.path = n.toString();
     }
 
@@ -180,8 +186,8 @@ public abstract class PathSegment{
     @Override
     public NameSegment clone() {
       NameSegment s = new NameSegment(this.path);
-      if (child != null) {
-        s.setChild(child.clone());
+      if (getChild() != null) {
+        s.setChild(getChild().clone());
       }
       return s;
     }
@@ -189,8 +195,8 @@ public abstract class PathSegment{
     @Override
     public NameSegment cloneWithNewChild(PathSegment newChild) {
       NameSegment s = new NameSegment(this.path);
-      if (child != null) {
-        s.setChild(child.cloneWithNewChild(newChild));
+      if (getChild() != null) {
+        s.setChild(getChild().cloneWithNewChild(newChild));
       } else {
         s.setChild(newChild);
       }
@@ -230,7 +236,7 @@ public abstract class PathSegment{
     int h = hash;
     if (h == 0) {
       h = segmentHashCode();
-      h = 31*h + ((child == null) ? 0 : child.hashCode());
+      h = h + ((child == null) ? 0 : 31 * child.hashCode());
       hash = h;
     }
     return h;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/logical/src/main/java/org/apache/drill/common/expression/SchemaPath.java
----------------------------------------------------------------------
diff --git a/logical/src/main/java/org/apache/drill/common/expression/SchemaPath.java b/logical/src/main/java/org/apache/drill/common/expression/SchemaPath.java
index 026fb09..8854e15 100644
--- a/logical/src/main/java/org/apache/drill/common/expression/SchemaPath.java
+++ b/logical/src/main/java/org/apache/drill/common/expression/SchemaPath.java
@@ -69,9 +69,6 @@ public class SchemaPath extends LogicalExpressionBase {
   public SchemaPath(String simpleName, ExpressionPosition pos) {
     super(pos);
     this.rootSegment = new NameSegment(simpleName);
-    if (simpleName.contains(".")) {
-      throw new IllegalStateException("This is deprecated and only supports simpe paths.");
-    }
   }
 
 
@@ -115,6 +112,37 @@ public class SchemaPath extends LogicalExpressionBase {
   }
 
   /**
+   * Parses input string using the same rules which are used for the field in the query.
+   * If a string contains dot outside back-ticks, or there are no backticks in the string,
+   * will be created {@link SchemaPath} with the {@link NameSegment}
+   * which contains one else {@link NameSegment}, etc.
+   * If a string contains [] then {@link ArraySegment} will be created.
+   *
+   * @param expr input string to be parsed
+   * @return {@link SchemaPath} instance
+   */
+  public static SchemaPath parseFromString(String expr) {
+    if (expr == null || expr.isEmpty()) {
+      return null;
+    }
+    try {
+      ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
+      CommonTokenStream tokens = new CommonTokenStream(lexer);
+      ExprParser parser = new ExprParser(tokens);
+
+      parse_return ret = parser.parse();
+
+      if (ret.e instanceof SchemaPath) {
+        return (SchemaPath) ret.e;
+      } else {
+        throw new IllegalStateException("Schema path is not a valid format.");
+      }
+    } catch (RecognitionException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  /**
    * A simple is a path where there are no repeated elements outside the lowest level of the path.
    * @return Whether this path is a simple path.
    */
@@ -227,25 +255,13 @@ public class SchemaPath extends LogicalExpressionBase {
     return ExpressionStringBuilder.toString(this);
   }
 
-  public String getAsUnescapedPath() {
-    StringBuilder sb = new StringBuilder();
-    PathSegment seg = getRootSegment();
-    if (seg.isArray()) {
-      throw new IllegalStateException("Drill doesn't currently support top level arrays");
-    }
-    sb.append(seg.getNameSegment().getPath());
-
-    while ( (seg = seg.getChild()) != null) {
-      if (seg.isNamed()) {
-        sb.append('.');
-        sb.append(seg.getNameSegment().getPath());
-      } else {
-        sb.append('[');
-        sb.append(seg.getArraySegment().getIndex());
-        sb.append(']');
-      }
-    }
-    return sb.toString();
+  /**
+   * Returns path string of {@code rootSegment}
+   *
+   * @return path string of {@code rootSegment}
+   */
+  public String getRootSegmentPath() {
+    return rootSegment.getPath();
   }
 
   public static class De extends StdDeserializer<SchemaPath> {
@@ -256,32 +272,7 @@ public class SchemaPath extends LogicalExpressionBase {
 
     @Override
     public SchemaPath deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
-      String expr = jp.getText();
-
-      if (expr == null || expr.isEmpty()) {
-        return null;
-      }
-      try {
-        // logger.debug("Parsing expression string '{}'", expr);
-        ExprLexer lexer = new ExprLexer(new ANTLRStringStream(expr));
-        CommonTokenStream tokens = new CommonTokenStream(lexer);
-        ExprParser parser = new ExprParser(tokens);
-
-        //TODO: move functionregistry and error collector to injectables.
-        //ctxt.findInjectableValue(valueId, forProperty, beanInstance)
-        parse_return ret = parser.parse();
-
-        // ret.e.resolveAndValidate(expr, errorCollector);
-        if (ret.e instanceof SchemaPath) {
-          return (SchemaPath) ret.e;
-        } else {
-          throw new IllegalStateException("Schema path is not a valid format.");
-        }
-      } catch (RecognitionException e) {
-        throw new RuntimeException(e);
-      }
+      return parseFromString(jp.getText());
     }
-
   }
-
 }


[4/4] drill git commit: DRILL-4264: Allow field names to include dots

Posted by am...@apache.org.
DRILL-4264: Allow field names to include dots


Project: http://git-wip-us.apache.org/repos/asf/drill/repo
Commit: http://git-wip-us.apache.org/repos/asf/drill/commit/d105950a
Tree: http://git-wip-us.apache.org/repos/asf/drill/tree/d105950a
Diff: http://git-wip-us.apache.org/repos/asf/drill/diff/d105950a

Branch: refs/heads/master
Commit: d105950a7a9fb2ff3acd072ee65a51ef1fca120e
Parents: e57514a
Author: Volodymyr Vysotskyi <vv...@gmail.com>
Authored: Wed Jul 5 19:08:59 2017 +0000
Committer: Aman Sinha <as...@maprtech.com>
Committed: Mon Sep 4 19:23:49 2017 -0700

----------------------------------------------------------------------
 .../db/binary/CompareFunctionsProcessor.java    | 547 -------------------
 .../mapr/db/binary/MapRDBFilterBuilder.java     |  12 +-
 .../binary/MaprDBCompareFunctionsProcessor.java |  65 +++
 .../mapr/db/json/JsonConditionBuilder.java      |  28 +-
 .../store/hbase/CompareFunctionsProcessor.java  | 461 ++++++++--------
 .../exec/store/hbase/HBaseFilterBuilder.java    |   6 +-
 ...onvertHiveParquetScanToDrillParquetScan.java |   4 +-
 .../hive/HiveDrillNativeScanBatchCreator.java   |   6 +-
 .../drill/exec/store/kudu/KuduRecordReader.java |   6 +-
 .../exec/store/kudu/KuduRecordWriterImpl.java   |   4 +-
 .../exec/store/mongo/MongoFilterBuilder.java    |   4 +-
 .../templates/EventBasedRecordWriter.java       |   6 +-
 .../templates/StringOutputRecordWriter.java     |   4 +-
 .../org/apache/drill/exec/client/DumpCat.java   |  26 +-
 .../drill/exec/physical/impl/ScanBatch.java     |  12 +-
 .../impl/TopN/PriorityQueueTemplate.java        |   2 +-
 .../impl/aggregate/StreamingAggBatch.java       |  12 +-
 .../physical/impl/common/ChainedHashTable.java  |   6 +-
 .../impl/flatten/FlattenRecordBatch.java        |  11 +-
 .../exec/physical/impl/join/HashJoinBatch.java  |   2 +-
 .../exec/physical/impl/join/MergeJoinBatch.java |   4 +-
 .../physical/impl/join/NestedLoopJoinBatch.java |   4 +-
 .../OrderedPartitionRecordBatch.java            |   5 +-
 .../impl/producer/ProducerConsumerBatch.java    |   6 +-
 .../impl/project/ProjectRecordBatch.java        |  70 +--
 .../impl/union/UnionAllRecordBatch.java         |  95 ++--
 .../physical/impl/xsort/ExternalSortBatch.java  |   2 +-
 .../managed/PriorityQueueCopierWrapper.java     |   2 +-
 .../logical/partition/PruneScanRule.java        |   6 +-
 .../drill/exec/record/RecordBatchLoader.java    |   6 +-
 .../apache/drill/exec/record/SchemaUtil.java    |  21 +-
 .../drill/exec/record/VectorContainer.java      |  12 +-
 .../exec/server/rest/WebUserConnection.java     |   2 +-
 .../apache/drill/exec/store/ColumnExplorer.java |   4 +-
 .../store/ischema/InfoSchemaFilterBuilder.java  |   6 +-
 .../drill/exec/store/parquet/Metadata.java      |  44 +-
 .../exec/store/parquet/MetadataVersion.java     |  10 +-
 .../exec/store/parquet/ParquetRecordWriter.java |   6 +-
 .../columnreaders/ParquetColumnMetadata.java    |   6 +-
 .../parquet/columnreaders/ParquetSchema.java    |  10 +-
 .../exec/store/parquet2/DrillParquetReader.java |  19 +-
 .../apache/drill/exec/util/BatchPrinter.java    |  35 +-
 .../org/apache/drill/exec/util/VectorUtil.java  |  14 +-
 .../drill/exec/vector/complex/FieldIdUtil.java  |   4 +-
 .../drill/exec/vector/complex/MapUtility.java   |   4 +-
 .../java/org/apache/drill/BaseTestQuery.java    |   5 +
 .../java/org/apache/drill/DrillTestWrapper.java |  29 +-
 .../java/org/apache/drill/PlanTestBase.java     |   4 +-
 .../java/org/apache/drill/TestUnionAll.java     |  42 +-
 .../expr/TestSchemaPathMaterialization.java     |  21 +-
 .../exec/fn/impl/TestAggregateFunctions.java    |  33 +-
 .../exec/physical/impl/TestOptiqPlans.java      |  12 +-
 .../physical/impl/TestSimpleFragmentRun.java    |   8 +-
 .../impl/join/TestHashJoinAdvanced.java         |  43 +-
 .../exec/physical/impl/join/TestMergeJoin.java  |  10 +-
 .../impl/mergereceiver/TestMergingReceiver.java |  14 +-
 .../physical/unit/MiniPlanUnitTestBase.java     |   5 +-
 .../exec/record/TestMaterializedField.java      |   7 +-
 .../drill/exec/record/vector/TestLoad.java      |  16 +-
 .../drill/exec/store/TestOutputMutator.java     |   4 +-
 .../store/parquet/ParquetResultListener.java    |  20 +-
 .../exec/store/parquet/TestParquetComplex.java  |  10 +-
 .../store/parquet/TestParquetMetadataCache.java |  93 +++-
 .../store/parquet/TestParquetPhysicalPlan.java  |   8 +-
 .../vector/complex/writer/TestJsonReader.java   |  29 +
 .../apache/drill/test/rowSet/RowSetPrinter.java |   2 +-
 .../drill/test/rowSet/test/RowSetTest.java      | 290 +++++-----
 .../metadata_directories.requires_replace.txt   |   3 +
 .../V3/metadata_table.requires_replace.txt      | 108 ++++
 .../V3/metadata_table_t1.requires_replace.txt   |  76 +++
 .../V3/metadata_table_t2.requires_replace.txt   |  76 +++
 .../metadata_directories.requires_replace.txt   |   3 +
 .../v3_1/metadata_table.requires_replace.txt    | 108 ++++
 .../v3_1/metadata_table_t1.requires_replace.txt |  76 +++
 .../v3_1/metadata_table_t2.requires_replace.txt |  76 +++
 ...ies_with_absolute_paths.requires_replace.txt |   3 -
 ...ble_with_absolute_paths.requires_replace.txt | 108 ----
 ..._with_absolute_paths_t1.requires_replace.txt |  76 ---
 ..._with_absolute_paths_t2.requires_replace.txt |  76 ---
 .../store/parquet/complex/baseline8.json        |  25 +-
 .../jdbc/impl/DrillColumnMetaDataList.java      |   6 +-
 .../drill/jdbc/DrillColumnMetaDataListTest.java |   6 +-
 .../codegen/templates/FixedValueVectors.java    |   3 +-
 .../drill/exec/record/MaterializedField.java    |  41 +-
 .../drill/exec/vector/BaseValueVector.java      |   4 +-
 .../org/apache/drill/exec/vector/BitVector.java |   5 +-
 .../drill/exec/vector/VectorDescriptor.java     |   6 +-
 .../exec/vector/accessor/TupleAccessor.java     |  12 +
 .../drill/exec/vector/accessor/TupleReader.java |   7 +
 .../drill/exec/vector/accessor/TupleWriter.java |   7 +
 .../vector/complex/AbstractContainerVector.java |  14 +-
 .../exec/vector/complex/AbstractMapVector.java  |  10 +-
 .../drill/exec/vector/complex/ListVector.java   |   4 +-
 .../drill/exec/vector/complex/MapVector.java    |  12 +-
 .../exec/vector/complex/RepeatedMapVector.java  |  10 +-
 .../vector/complex/impl/PromotableWriter.java   |   4 +-
 .../drill/common/expression/FieldReference.java |  14 +-
 .../drill/common/expression/PathSegment.java    |  40 +-
 .../drill/common/expression/SchemaPath.java     |  87 ++-
 99 files changed, 1710 insertions(+), 1722 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/CompareFunctionsProcessor.java
----------------------------------------------------------------------
diff --git a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/CompareFunctionsProcessor.java b/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/CompareFunctionsProcessor.java
deleted file mode 100644
index a83abf3..0000000
--- a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/CompareFunctionsProcessor.java
+++ /dev/null
@@ -1,547 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.drill.exec.store.mapr.db.binary;
-
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
-
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-
-import org.apache.drill.common.expression.CastExpression;
-import org.apache.drill.common.expression.ConvertExpression;
-import org.apache.drill.common.expression.FunctionCall;
-import org.apache.drill.common.expression.LogicalExpression;
-import org.apache.drill.common.expression.SchemaPath;
-import org.apache.drill.common.expression.ValueExpressions.BooleanExpression;
-import org.apache.drill.common.expression.ValueExpressions.DateExpression;
-import org.apache.drill.common.expression.ValueExpressions.DoubleExpression;
-import org.apache.drill.common.expression.ValueExpressions.FloatExpression;
-import org.apache.drill.common.expression.ValueExpressions.IntExpression;
-import org.apache.drill.common.expression.ValueExpressions.LongExpression;
-import org.apache.drill.common.expression.ValueExpressions.QuotedString;
-import org.apache.drill.common.expression.ValueExpressions.TimeExpression;
-import org.apache.drill.common.expression.ValueExpressions.TimeStampExpression;
-import org.apache.drill.common.expression.visitors.AbstractExprVisitor;
-import org.apache.hadoop.hbase.util.Order;
-import org.apache.hadoop.hbase.util.PositionedByteRange;
-import org.apache.hadoop.hbase.util.SimplePositionedMutableByteRange;
-
-import org.apache.drill.exec.store.hbase.DrillHBaseConstants;
-import org.apache.hadoop.hbase.HConstants;
-import org.apache.hadoop.hbase.filter.Filter;
-import org.apache.hadoop.hbase.filter.PrefixFilter;
-
-import com.google.common.base.Charsets;
-import com.google.common.collect.ImmutableMap;
-import com.google.common.collect.ImmutableSet;
-
-class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpression, RuntimeException> {
-  private byte[] value;
-  private boolean success;
-  private boolean isEqualityFn;
-  private SchemaPath path;
-  private String functionName;
-  private boolean sortOrderAscending;
-
-  // Fields for row-key prefix comparison
-  // If the query is on row-key prefix, we cannot use a standard template to identify startRow, stopRow and filter
-  // Hence, we use these local variables(set depending upon the encoding type in user query)
-  private boolean isRowKeyPrefixComparison;
-  byte[] rowKeyPrefixStartRow;
-  byte[] rowKeyPrefixStopRow;
-  Filter rowKeyPrefixFilter;
-
-  public static boolean isCompareFunction(String functionName) {
-    return COMPARE_FUNCTIONS_TRANSPOSE_MAP.keySet().contains(functionName);
-  }
-
-  public static CompareFunctionsProcessor process(FunctionCall call, boolean nullComparatorSupported) {
-    String functionName = call.getName();
-    LogicalExpression nameArg = call.args.get(0);
-    LogicalExpression valueArg = call.args.size() >= 2 ? call.args.get(1) : null;
-    CompareFunctionsProcessor evaluator = new CompareFunctionsProcessor(functionName);
-
-    if (valueArg != null) { // binary function
-      if (VALUE_EXPRESSION_CLASSES.contains(nameArg.getClass())) {
-        LogicalExpression swapArg = valueArg;
-        valueArg = nameArg;
-        nameArg = swapArg;
-        evaluator.functionName = COMPARE_FUNCTIONS_TRANSPOSE_MAP.get(functionName);
-      }
-      evaluator.success = nameArg.accept(evaluator, valueArg);
-    } else if (nullComparatorSupported && call.args.get(0) instanceof SchemaPath) {
-      evaluator.success = true;
-      evaluator.path = (SchemaPath) nameArg;
-    }
-
-    return evaluator;
-  }
-
-  public CompareFunctionsProcessor(String functionName) {
-    this.success = false;
-    this.functionName = functionName;
-    this.isEqualityFn = COMPARE_FUNCTIONS_TRANSPOSE_MAP.containsKey(functionName)
-        && COMPARE_FUNCTIONS_TRANSPOSE_MAP.get(functionName).equals(functionName);
-    this.isRowKeyPrefixComparison = false;
-    this.sortOrderAscending = true;
-  }
-
-  public byte[] getValue() {
-    return value;
-  }
-
-  public boolean isSuccess() {
-    return success;
-  }
-
-  public SchemaPath getPath() {
-    return path;
-  }
-
-  public String getFunctionName() {
-    return functionName;
-  }
-
-  public boolean isRowKeyPrefixComparison() {
-	return isRowKeyPrefixComparison;
-  }
-
-  public byte[] getRowKeyPrefixStartRow() {
-    return rowKeyPrefixStartRow;
-  }
-
-  public byte[] getRowKeyPrefixStopRow() {
-  return rowKeyPrefixStopRow;
-  }
-
-  public Filter getRowKeyPrefixFilter() {
-  return rowKeyPrefixFilter;
-  }
-
-  public boolean isSortOrderAscending() {
-    return sortOrderAscending;
-  }
-
-  @Override
-  public Boolean visitCastExpression(CastExpression e, LogicalExpression valueArg) throws RuntimeException {
-    if (e.getInput() instanceof CastExpression || e.getInput() instanceof SchemaPath) {
-      return e.getInput().accept(this, valueArg);
-    }
-    return false;
-  }
-
-  @Override
-  public Boolean visitConvertExpression(ConvertExpression e, LogicalExpression valueArg) throws RuntimeException {
-    if (e.getConvertFunction() == ConvertExpression.CONVERT_FROM) {
-
-      String encodingType = e.getEncodingType();
-      int prefixLength    = 0;
-
-      // Handle scan pruning in the following scenario:
-      // The row-key is a composite key and the CONVERT_FROM() function has byte_substr() as input function which is
-      // querying for the first few bytes of the row-key(start-offset 1)
-      // Example WHERE clause:
-      // CONVERT_FROM(BYTE_SUBSTR(row_key, 1, 8), 'DATE_EPOCH_BE') < DATE '2015-06-17'
-      if (e.getInput() instanceof FunctionCall) {
-
-        // We can prune scan range only for big-endian encoded data
-        if (encodingType.endsWith("_BE") == false) {
-          return false;
-        }
-
-        FunctionCall call = (FunctionCall)e.getInput();
-        String functionName = call.getName();
-        if (!functionName.equalsIgnoreCase("byte_substr")) {
-          return false;
-        }
-
-        LogicalExpression nameArg = call.args.get(0);
-        LogicalExpression valueArg1 = call.args.size() >= 2 ? call.args.get(1) : null;
-        LogicalExpression valueArg2 = call.args.size() >= 3 ? call.args.get(2) : null;
-
-        if (((nameArg instanceof SchemaPath) == false) ||
-             (valueArg1 == null) || ((valueArg1 instanceof IntExpression) == false) ||
-             (valueArg2 == null) || ((valueArg2 instanceof IntExpression) == false)) {
-          return false;
-        }
-
-        boolean isRowKey = ((SchemaPath)nameArg).getAsUnescapedPath().equals(DrillHBaseConstants.ROW_KEY);
-        int offset = ((IntExpression)valueArg1).getInt();
-
-        if (!isRowKey || (offset != 1)) {
-          return false;
-        }
-
-        this.path    = (SchemaPath)nameArg;
-        prefixLength = ((IntExpression)valueArg2).getInt();
-        this.isRowKeyPrefixComparison = true;
-        return visitRowKeyPrefixConvertExpression(e, prefixLength, valueArg);
-      }
-
-      if (e.getInput() instanceof SchemaPath) {
-        ByteBuf bb = null;
-
-        switch (encodingType) {
-        case "INT_BE":
-        case "INT":
-        case "UINT_BE":
-        case "UINT":
-        case "UINT4_BE":
-        case "UINT4":
-          if (valueArg instanceof IntExpression
-              && (isEqualityFn || encodingType.startsWith("U"))) {
-            bb = newByteBuf(4, encodingType.endsWith("_BE"));
-            bb.writeInt(((IntExpression)valueArg).getInt());
-          }
-          break;
-        case "BIGINT_BE":
-        case "BIGINT":
-        case "UINT8_BE":
-        case "UINT8":
-          if (valueArg instanceof LongExpression
-              && (isEqualityFn || encodingType.startsWith("U"))) {
-            bb = newByteBuf(8, encodingType.endsWith("_BE"));
-            bb.writeLong(((LongExpression)valueArg).getLong());
-          }
-          break;
-        case "FLOAT":
-          if (valueArg instanceof FloatExpression && isEqualityFn) {
-            bb = newByteBuf(4, true);
-            bb.writeFloat(((FloatExpression)valueArg).getFloat());
-          }
-          break;
-        case "DOUBLE":
-          if (valueArg instanceof DoubleExpression && isEqualityFn) {
-            bb = newByteBuf(8, true);
-            bb.writeDouble(((DoubleExpression)valueArg).getDouble());
-          }
-          break;
-        case "TIME_EPOCH":
-        case "TIME_EPOCH_BE":
-          if (valueArg instanceof TimeExpression) {
-            bb = newByteBuf(8, encodingType.endsWith("_BE"));
-            bb.writeLong(((TimeExpression)valueArg).getTime());
-          }
-          break;
-        case "DATE_EPOCH":
-        case "DATE_EPOCH_BE":
-          if (valueArg instanceof DateExpression) {
-            bb = newByteBuf(8, encodingType.endsWith("_BE"));
-            bb.writeLong(((DateExpression)valueArg).getDate());
-          }
-          break;
-        case "BOOLEAN_BYTE":
-          if (valueArg instanceof BooleanExpression) {
-            bb = newByteBuf(1, false /* does not matter */);
-            bb.writeByte(((BooleanExpression)valueArg).getBoolean() ? 1 : 0);
-          }
-          break;
-        case "DOUBLE_OB":
-        case "DOUBLE_OBD":
-          if (valueArg instanceof DoubleExpression) {
-            bb = newByteBuf(9, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 9);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat64(br,
-                  ((DoubleExpression)valueArg).getDouble(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat64(br,
-                  ((DoubleExpression)valueArg).getDouble(), Order.ASCENDING);
-            }
-          }
-          break;
-        case "FLOAT_OB":
-        case "FLOAT_OBD":
-          if (valueArg instanceof FloatExpression) {
-            bb = newByteBuf(5, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 5);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat32(br,
-                  ((FloatExpression)valueArg).getFloat(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat32(br,
-                        ((FloatExpression)valueArg).getFloat(), Order.ASCENDING);
-            }
-          }
-          break;
-        case "BIGINT_OB":
-        case "BIGINT_OBD":
-          if (valueArg instanceof LongExpression) {
-            bb = newByteBuf(9, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 9);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt64(br,
-                        ((LongExpression)valueArg).getLong(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt64(br,
-                  ((LongExpression)valueArg).getLong(), Order.ASCENDING);
-            }
-          }
-          break;
-        case "INT_OB":
-        case "INT_OBD":
-          if (valueArg instanceof IntExpression) {
-            bb = newByteBuf(5, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 5);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt32(br,
-                  ((IntExpression)valueArg).getInt(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt32(br,
-                        ((IntExpression)valueArg).getInt(), Order.ASCENDING);
-            }
-          }
-          break;
-        case "UTF8_OB":
-        case "UTF8_OBD":
-          if (valueArg instanceof QuotedString) {
-            int stringLen = ((QuotedString) valueArg).value.getBytes(Charsets.UTF_8).length;
-            bb = newByteBuf(stringLen + 2, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, stringLen + 2);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeString(br,
-                  ((QuotedString)valueArg).value, Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeString(br,
-                        ((QuotedString)valueArg).value, Order.ASCENDING);
-            }
-          }
-          break;
-        case "UTF8":
-        // let visitSchemaPath() handle this.
-          return e.getInput().accept(this, valueArg);
-        }
-
-        if (bb != null) {
-          this.value = bb.array();
-          this.path = (SchemaPath)e.getInput();
-          return true;
-        }
-      }
-    }
-    return false;
-  }
-
-  private Boolean visitRowKeyPrefixConvertExpression(ConvertExpression e,
-    int prefixLength, LogicalExpression valueArg) {
-    String encodingType = e.getEncodingType();
-    rowKeyPrefixStartRow = HConstants.EMPTY_START_ROW;
-    rowKeyPrefixStopRow  = HConstants.EMPTY_START_ROW;
-    rowKeyPrefixFilter   = null;
-
-    if ((encodingType.compareTo("UINT4_BE") == 0) ||
-        (encodingType.compareTo("UINT_BE") == 0)) {
-      if (prefixLength != 4) {
-        throw new RuntimeException("Invalid length(" + prefixLength + ") of row-key prefix");
-      }
-
-      int val;
-      if ((valueArg instanceof IntExpression) == false) {
-        return false;
-      }
-
-      val = ((IntExpression)valueArg).getInt();
-
-      // For TIME_EPOCH_BE/BIGINT_BE encoding, the operators that we push-down are =, <>, <, <=, >, >=
-      switch (functionName) {
-      case "equal":
-        rowKeyPrefixFilter = new PrefixFilter(ByteBuffer.allocate(4).putInt(val).array());
-        rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val).array();
-        rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val + 1).array();
-        return true;
-      case "greater_than_or_equal_to":
-        rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val).array();
-        return true;
-      case "greater_than":
-        rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val + 1).array();
-        return true;
-      case "less_than_or_equal_to":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val + 1).array();
-        return true;
-      case "less_than":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val).array();
-        return true;
-      }
-
-      return false;
-    }
-
-    if ((encodingType.compareTo("TIMESTAMP_EPOCH_BE") == 0) ||
-        (encodingType.compareTo("TIME_EPOCH_BE") == 0) ||
-        (encodingType.compareTo("UINT8_BE") == 0)) {
-
-      if (prefixLength != 8) {
-        throw new RuntimeException("Invalid length(" + prefixLength + ") of row-key prefix");
-      }
-
-      long val;
-      if (encodingType.compareTo("TIME_EPOCH_BE") == 0) {
-        if ((valueArg instanceof TimeExpression) == false) {
-          return false;
-        }
-
-        val = ((TimeExpression)valueArg).getTime();
-      } else if (encodingType.compareTo("UINT8_BE") == 0){
-        if ((valueArg instanceof LongExpression) == false) {
-          return false;
-        }
-
-        val = ((LongExpression)valueArg).getLong();
-      } else if (encodingType.compareTo("TIMESTAMP_EPOCH_BE") == 0) {
-        if ((valueArg instanceof TimeStampExpression) == false) {
-          return false;
-        }
-
-        val = ((TimeStampExpression)valueArg).getTimeStamp();
-      } else {
-        // Should not reach here.
-        return false;
-      }
-
-      // For TIME_EPOCH_BE/BIGINT_BE encoding, the operators that we push-down are =, <>, <, <=, >, >=
-      switch (functionName) {
-      case "equal":
-        rowKeyPrefixFilter = new PrefixFilter(ByteBuffer.allocate(8).putLong(val).array());
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val).array();
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val + 1).array();
-        return true;
-      case "greater_than_or_equal_to":
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val).array();
-        return true;
-      case "greater_than":
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val + 1).array();
-        return true;
-      case "less_than_or_equal_to":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val + 1).array();
-        return true;
-      case "less_than":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val).array();
-        return true;
-      }
-
-      return false;
-    }
-
-    if (encodingType.compareTo("DATE_EPOCH_BE") == 0) {
-      if ((valueArg instanceof DateExpression) == false) {
-        return false;
-      }
-
-      if (prefixLength != 8) {
-        throw new RuntimeException("Invalid length(" + prefixLength + ") of row-key prefix");
-      }
-
-      final long MILLISECONDS_IN_A_DAY  = (long)1000 * 60 * 60 * 24;
-      long dateToSet;
-      // For DATE encoding, the operators that we push-down are =, <>, <, <=, >, >=
-      switch (functionName) {
-      case "equal":
-        long startDate = ((DateExpression)valueArg).getDate();
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(startDate).array();
-        long stopDate  = ((DateExpression)valueArg).getDate() + MILLISECONDS_IN_A_DAY;
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(stopDate).array();
-        return true;
-      case "greater_than_or_equal_to":
-        dateToSet = ((DateExpression)valueArg).getDate();
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
-      case "greater_than":
-        dateToSet = ((DateExpression)valueArg).getDate() + MILLISECONDS_IN_A_DAY;
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
-      case "less_than_or_equal_to":
-        dateToSet = ((DateExpression)valueArg).getDate() + MILLISECONDS_IN_A_DAY;
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
-      case "less_than":
-        dateToSet = ((DateExpression)valueArg).getDate();
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
-      }
-
-      return false;
-    }
-
-    return false;
-  }
-
-  @Override
-  public Boolean visitUnknown(LogicalExpression e, LogicalExpression valueArg) throws RuntimeException {
-    return false;
-  }
-
-  @Override
-  public Boolean visitSchemaPath(SchemaPath path, LogicalExpression valueArg) throws RuntimeException {
-    if (valueArg instanceof QuotedString) {
-      this.value = ((QuotedString) valueArg).value.getBytes(Charsets.UTF_8);
-      this.path = path;
-      return true;
-    }
-    return false;
-  }
-
-  private static ByteBuf newByteBuf(int size, boolean bigEndian) {
-    return Unpooled.wrappedBuffer(new byte[size])
-        .order(bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN)
-        .writerIndex(0);
-  }
-
-  private static final ImmutableSet<Class<? extends LogicalExpression>> VALUE_EXPRESSION_CLASSES;
-  static {
-    ImmutableSet.Builder<Class<? extends LogicalExpression>> builder = ImmutableSet.builder();
-    VALUE_EXPRESSION_CLASSES = builder
-        .add(BooleanExpression.class)
-        .add(DateExpression.class)
-        .add(DoubleExpression.class)
-        .add(FloatExpression.class)
-        .add(IntExpression.class)
-        .add(LongExpression.class)
-        .add(QuotedString.class)
-        .add(TimeExpression.class)
-        .build();
-  }
-
-  private static final ImmutableMap<String, String> COMPARE_FUNCTIONS_TRANSPOSE_MAP;
-  static {
-    ImmutableMap.Builder<String, String> builder = ImmutableMap.builder();
-    COMPARE_FUNCTIONS_TRANSPOSE_MAP = builder
-        // unary functions
-        .put("isnotnull", "isnotnull")
-        .put("isNotNull", "isNotNull")
-        .put("is not null", "is not null")
-        .put("isnull", "isnull")
-        .put("isNull", "isNull")
-        .put("is null", "is null")
-        // binary functions
-        .put("like", "like")
-        .put("equal", "equal")
-        .put("not_equal", "not_equal")
-        .put("greater_than_or_equal_to", "less_than_or_equal_to")
-        .put("greater_than", "less_than")
-        .put("less_than_or_equal_to", "greater_than_or_equal_to")
-        .put("less_than", "greater_than")
-        .build();
-  }
-
-}

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MapRDBFilterBuilder.java
----------------------------------------------------------------------
diff --git a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MapRDBFilterBuilder.java b/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MapRDBFilterBuilder.java
index 3aba1e7..240d6b0 100644
--- a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MapRDBFilterBuilder.java
+++ b/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MapRDBFilterBuilder.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -95,7 +95,7 @@ public class MapRDBFilterBuilder extends AbstractExprVisitor<HBaseScanSpec, Void
     String functionName = call.getName();
     ImmutableList<LogicalExpression> args = call.args;
 
-    if (CompareFunctionsProcessor.isCompareFunction(functionName)) {
+    if (MaprDBCompareFunctionsProcessor.isCompareFunction(functionName)) {
       /*
        * HBASE-10848: Bug in HBase versions (0.94.[0-18], 0.96.[0-2], 0.98.[0-1])
        * causes a filter with NullComparator to fail. Enable only if specified in
@@ -105,7 +105,7 @@ public class MapRDBFilterBuilder extends AbstractExprVisitor<HBaseScanSpec, Void
         nullComparatorSupported = groupScan.getHBaseConf().getBoolean("drill.hbase.supports.null.comparator", false);
       }
 
-      CompareFunctionsProcessor processor = CompareFunctionsProcessor.process(call, nullComparatorSupported);
+      MaprDBCompareFunctionsProcessor processor = MaprDBCompareFunctionsProcessor.createFunctionsProcessorInstance(call, nullComparatorSupported);
       if (processor.isSuccess()) {
         nodeScanSpec = createHBaseScanSpec(call, processor);
       }
@@ -156,12 +156,12 @@ public class MapRDBFilterBuilder extends AbstractExprVisitor<HBaseScanSpec, Void
     return new HBaseScanSpec(groupScan.getTableName(), startRow, stopRow, newFilter);
   }
 
-  private HBaseScanSpec createHBaseScanSpec(FunctionCall call, CompareFunctionsProcessor processor) {
+  private HBaseScanSpec createHBaseScanSpec(FunctionCall call, MaprDBCompareFunctionsProcessor processor) {
     String functionName = processor.getFunctionName();
     SchemaPath field = processor.getPath();
     byte[] fieldValue = processor.getValue();
     boolean sortOrderAscending = processor.isSortOrderAscending();
-    boolean isRowKey = field.getAsUnescapedPath().equals(ROW_KEY);
+    boolean isRowKey = field.getRootSegmentPath().equals(ROW_KEY);
     if (!(isRowKey
         || (!field.getRootSegment().isLastPath()
             && field.getRootSegment().getChild().isLastPath()
@@ -338,7 +338,7 @@ public class MapRDBFilterBuilder extends AbstractExprVisitor<HBaseScanSpec, Void
   }
 
   private HBaseScanSpec createRowKeyPrefixScanSpec(FunctionCall call,
-      CompareFunctionsProcessor processor) {
+      MaprDBCompareFunctionsProcessor processor) {
     byte[] startRow = processor.getRowKeyPrefixStartRow();
     byte[] stopRow  = processor.getRowKeyPrefixStopRow();
     Filter filter   = processor.getRowKeyPrefixFilter();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MaprDBCompareFunctionsProcessor.java
----------------------------------------------------------------------
diff --git a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MaprDBCompareFunctionsProcessor.java b/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MaprDBCompareFunctionsProcessor.java
new file mode 100644
index 0000000..5e17c27
--- /dev/null
+++ b/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/binary/MaprDBCompareFunctionsProcessor.java
@@ -0,0 +1,65 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.drill.exec.store.mapr.db.binary;
+
+import com.google.common.base.Charsets;
+import io.netty.buffer.ByteBuf;
+import org.apache.drill.common.expression.FunctionCall;
+import org.apache.drill.common.expression.LogicalExpression;
+import org.apache.drill.common.expression.ValueExpressions;
+import org.apache.drill.exec.store.hbase.CompareFunctionsProcessor;
+import org.apache.hadoop.hbase.util.Order;
+import org.apache.hadoop.hbase.util.PositionedByteRange;
+import org.apache.hadoop.hbase.util.SimplePositionedMutableByteRange;
+
+class MaprDBCompareFunctionsProcessor extends CompareFunctionsProcessor {
+
+  public MaprDBCompareFunctionsProcessor(String functionName) {
+    super(functionName);
+  }
+
+  public static MaprDBCompareFunctionsProcessor createFunctionsProcessorInstance(FunctionCall call, boolean nullComparatorSupported) {
+    String functionName = call.getName();
+    MaprDBCompareFunctionsProcessor evaluator = new MaprDBCompareFunctionsProcessor(functionName);
+
+    return createFunctionsProcessorInstanceInternal(call, nullComparatorSupported, evaluator);
+  }
+
+  @Override
+  protected ByteBuf getByteBuf(LogicalExpression valueArg, String encodingType) {
+    switch (encodingType) {
+      case "UTF8_OB":
+      case "UTF8_OBD":
+        if (valueArg instanceof ValueExpressions.QuotedString) {
+          int stringLen = ((ValueExpressions.QuotedString) valueArg).value.getBytes(Charsets.UTF_8).length;
+          ByteBuf bb = newByteBuf(stringLen + 2, true);
+          PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, stringLen + 2);
+          if (encodingType.endsWith("_OBD")) {
+            org.apache.hadoop.hbase.util.OrderedBytes.encodeString(br, ((ValueExpressions.QuotedString) valueArg).value,
+                                                                  Order.DESCENDING);
+            setSortOrderAscending(false);
+          } else {
+            org.apache.hadoop.hbase.util.OrderedBytes.encodeString(br, ((ValueExpressions.QuotedString) valueArg).value,
+                                                                  Order.ASCENDING);
+          }
+          return bb;
+        }
+    }
+    return null;
+  }
+}

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/json/JsonConditionBuilder.java
----------------------------------------------------------------------
diff --git a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/json/JsonConditionBuilder.java b/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/json/JsonConditionBuilder.java
index 16802ad..e8a8b6e 100644
--- a/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/json/JsonConditionBuilder.java
+++ b/contrib/format-maprdb/src/main/java/org/apache/drill/exec/store/mapr/db/json/JsonConditionBuilder.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -166,66 +166,66 @@ public class JsonConditionBuilder extends AbstractExprVisitor<JsonScanSpec, Void
     switch (functionName) {
     case "equal":
       cond = MapRDB.newCondition();
-      setIsCondition(cond, field.getAsUnescapedPath(), Op.EQUAL, fieldValue);
+      setIsCondition(cond, field.getRootSegmentPath(), Op.EQUAL, fieldValue);
       cond.build();
       break;
 
     case "not_equal":
       cond = MapRDB.newCondition();
-      setIsCondition(cond, field.getAsUnescapedPath(), Op.NOT_EQUAL, fieldValue);
+      setIsCondition(cond, field.getRootSegmentPath(), Op.NOT_EQUAL, fieldValue);
       cond.build();
       break;
 
     case "less_than":
       cond = MapRDB.newCondition();
-      setIsCondition(cond, field.getAsUnescapedPath(), Op.LESS, fieldValue);
+      setIsCondition(cond, field.getRootSegmentPath(), Op.LESS, fieldValue);
       cond.build();
       break;
 
     case "less_than_or_equal_to":
       cond = MapRDB.newCondition();
-      setIsCondition(cond, field.getAsUnescapedPath(), Op.LESS_OR_EQUAL, fieldValue);
+      setIsCondition(cond, field.getRootSegmentPath(), Op.LESS_OR_EQUAL, fieldValue);
       cond.build();
       break;
 
     case "greater_than":
       cond = MapRDB.newCondition();
-      setIsCondition(cond, field.getAsUnescapedPath(), Op.GREATER, fieldValue);
+      setIsCondition(cond, field.getRootSegmentPath(), Op.GREATER, fieldValue);
       cond.build();
       break;
 
     case "greater_than_or_equal_to":
       cond = MapRDB.newCondition();
-      setIsCondition(cond, field.getAsUnescapedPath(), Op.GREATER_OR_EQUAL, fieldValue);
+      setIsCondition(cond, field.getRootSegmentPath(), Op.GREATER_OR_EQUAL, fieldValue);
       cond.build();
       break;
 
     case "isnull":
-      cond = MapRDB.newCondition().notExists(field.getAsUnescapedPath()).build();
+      cond = MapRDB.newCondition().notExists(field.getRootSegmentPath()).build();
       break;
 
     case "isnotnull":
-      cond = MapRDB.newCondition().exists(field.getAsUnescapedPath()).build();
+      cond = MapRDB.newCondition().exists(field.getRootSegmentPath()).build();
       break;
 
     case "istrue":
-      cond = MapRDB.newCondition().is(field.getAsUnescapedPath(), Op.EQUAL, true).build();
+      cond = MapRDB.newCondition().is(field.getRootSegmentPath(), Op.EQUAL, true).build();
       break;
 
     case "isnotfalse":
-      cond = MapRDB.newCondition().is(field.getAsUnescapedPath(), Op.NOT_EQUAL, false).build();
+      cond = MapRDB.newCondition().is(field.getRootSegmentPath(), Op.NOT_EQUAL, false).build();
       break;
 
     case "isfalse":
-      cond = MapRDB.newCondition().is(field.getAsUnescapedPath(), Op.EQUAL, false).build();
+      cond = MapRDB.newCondition().is(field.getRootSegmentPath(), Op.EQUAL, false).build();
       break;
 
     case "isnottrue":
-      cond = MapRDB.newCondition().is(field.getAsUnescapedPath(), Op.NOT_EQUAL, true).build();
+      cond = MapRDB.newCondition().is(field.getRootSegmentPath(), Op.NOT_EQUAL, true).build();
       break;
 
     case "like":
-      cond = MapRDB.newCondition().like(field.getAsUnescapedPath(), fieldValue.getString()).build();
+      cond = MapRDB.newCondition().like(field.getRootSegmentPath(), fieldValue.getString()).build();
       break;
 
     default:

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/CompareFunctionsProcessor.java
----------------------------------------------------------------------
diff --git a/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/CompareFunctionsProcessor.java b/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/CompareFunctionsProcessor.java
index 09e7be7..0672b53 100644
--- a/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/CompareFunctionsProcessor.java
+++ b/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/CompareFunctionsProcessor.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -50,7 +50,7 @@ import com.google.common.base.Charsets;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 
-class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpression, RuntimeException> {
+public class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpression, RuntimeException> {
   private byte[] value;
   private boolean success;
   private boolean isEqualityFn;
@@ -62,31 +62,37 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
   // If the query is on row-key prefix, we cannot use a standard template to identify startRow, stopRow and filter
   // Hence, we use these local variables(set depending upon the encoding type in user query)
   private boolean isRowKeyPrefixComparison;
-  byte[] rowKeyPrefixStartRow;
-  byte[] rowKeyPrefixStopRow;
-  Filter rowKeyPrefixFilter;
+  private byte[] rowKeyPrefixStartRow;
+  private byte[] rowKeyPrefixStopRow;
+  private Filter rowKeyPrefixFilter;
 
   public static boolean isCompareFunction(String functionName) {
     return COMPARE_FUNCTIONS_TRANSPOSE_MAP.keySet().contains(functionName);
   }
 
-  public static CompareFunctionsProcessor process(FunctionCall call, boolean nullComparatorSupported) {
+  public static CompareFunctionsProcessor createFunctionsProcessorInstance(FunctionCall call, boolean nullComparatorSupported) {
     String functionName = call.getName();
-    LogicalExpression nameArg = call.args.get(0);
-    LogicalExpression valueArg = call.args.size() >= 2 ? call.args.get(1) : null;
     CompareFunctionsProcessor evaluator = new CompareFunctionsProcessor(functionName);
 
+    return createFunctionsProcessorInstanceInternal(call, nullComparatorSupported, evaluator);
+  }
+
+  protected static <T extends CompareFunctionsProcessor> T createFunctionsProcessorInstanceInternal(FunctionCall call,
+                                                                                                    boolean nullComparatorSupported,
+                                                                                                    T evaluator) {
+    LogicalExpression nameArg = call.args.get(0);
+    LogicalExpression valueArg = call.args.size() >= 2 ? call.args.get(1) : null;
     if (valueArg != null) { // binary function
       if (VALUE_EXPRESSION_CLASSES.contains(nameArg.getClass())) {
         LogicalExpression swapArg = valueArg;
         valueArg = nameArg;
         nameArg = swapArg;
-        evaluator.functionName = COMPARE_FUNCTIONS_TRANSPOSE_MAP.get(functionName);
+        evaluator.setFunctionName(COMPARE_FUNCTIONS_TRANSPOSE_MAP.get(evaluator.getFunctionName()));
       }
-      evaluator.success = nameArg.accept(evaluator, valueArg);
+      evaluator.setSuccess(nameArg.accept(evaluator, valueArg));
     } else if (nullComparatorSupported && call.args.get(0) instanceof SchemaPath) {
-      evaluator.success = true;
-      evaluator.path = (SchemaPath) nameArg;
+      evaluator.setSuccess(true);
+      evaluator.setPath((SchemaPath) nameArg);
     }
 
     return evaluator;
@@ -109,14 +115,26 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
     return success;
   }
 
+  protected void setSuccess(boolean success) {
+    this.success = success;
+  }
+
   public SchemaPath getPath() {
     return path;
   }
 
+  protected void setPath(SchemaPath path) {
+    this.path = path;
+  }
+
   public String getFunctionName() {
     return functionName;
   }
 
+  protected void setFunctionName(String functionName) {
+    this.functionName = functionName;
+  }
+
   public boolean isRowKeyPrefixComparison() {
   return isRowKeyPrefixComparison;
   }
@@ -137,6 +155,10 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
     return sortOrderAscending;
   }
 
+  protected void setSortOrderAscending(boolean sortOrderAscending) {
+    this.sortOrderAscending = sortOrderAscending;
+  }
+
   @Override
   public Boolean visitCastExpression(CastExpression e, LogicalExpression valueArg) throws RuntimeException {
     if (e.getInput() instanceof CastExpression || e.getInput() instanceof SchemaPath) {
@@ -147,10 +169,10 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
 
   @Override
   public Boolean visitConvertExpression(ConvertExpression e, LogicalExpression valueArg) throws RuntimeException {
-    if (e.getConvertFunction() == ConvertExpression.CONVERT_FROM) {
+    if (ConvertExpression.CONVERT_FROM.equals(e.getConvertFunction())) {
 
       String encodingType = e.getEncodingType();
-      int prefixLength    = 0;
+      int prefixLength;
 
       // Handle scan pruning in the following scenario:
       // The row-key is a composite key and the CONVERT_FROM() function has byte_substr() as input function which is
@@ -160,7 +182,7 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
       if (e.getInput() instanceof FunctionCall) {
 
         // We can prune scan range only for big-endian encoded data
-        if (encodingType.endsWith("_BE") == false) {
+        if (!encodingType.endsWith("_BE")) {
           return false;
         }
 
@@ -174,21 +196,21 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
         LogicalExpression valueArg1 = call.args.size() >= 2 ? call.args.get(1) : null;
         LogicalExpression valueArg2 = call.args.size() >= 3 ? call.args.get(2) : null;
 
-        if (((nameArg instanceof SchemaPath) == false) ||
-             (valueArg1 == null) || ((valueArg1 instanceof IntExpression) == false) ||
-             (valueArg2 == null) || ((valueArg2 instanceof IntExpression) == false)) {
+        if (!(nameArg instanceof SchemaPath)
+            || (valueArg1 == null) || !(valueArg1 instanceof IntExpression)
+            || (valueArg2 == null) || !(valueArg2 instanceof IntExpression)) {
           return false;
         }
 
-        boolean isRowKey = ((SchemaPath)nameArg).getAsUnescapedPath().equals(DrillHBaseConstants.ROW_KEY);
-        int offset = ((IntExpression)valueArg1).getInt();
+        boolean isRowKey = ((SchemaPath) nameArg).getRootSegmentPath().equals(DrillHBaseConstants.ROW_KEY);
+        int offset = ((IntExpression) valueArg1).getInt();
 
-        if (!isRowKey || (offset != 1)) {
+        if (!isRowKey || offset != 1) {
           return false;
         }
 
-        this.path    = (SchemaPath)nameArg;
-        prefixLength = ((IntExpression)valueArg2).getInt();
+        this.path = (SchemaPath) nameArg;
+        prefixLength = ((IntExpression) valueArg2).getInt();
         this.isRowKeyPrefixComparison = true;
         return visitRowKeyPrefixConvertExpression(e, prefixLength, valueArg);
       }
@@ -196,123 +218,125 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
       if (e.getInput() instanceof SchemaPath) {
         ByteBuf bb = null;
         switch (encodingType) {
-        case "INT_BE":
-        case "INT":
-        case "UINT_BE":
-        case "UINT":
-        case "UINT4_BE":
-        case "UINT4":
-          if (valueArg instanceof IntExpression
-              && (isEqualityFn || encodingType.startsWith("U"))) {
-            bb = newByteBuf(4, encodingType.endsWith("_BE"));
-            bb.writeInt(((IntExpression)valueArg).getInt());
-          }
-          break;
-        case "BIGINT_BE":
-        case "BIGINT":
-        case "UINT8_BE":
-        case "UINT8":
-          if (valueArg instanceof LongExpression
-              && (isEqualityFn || encodingType.startsWith("U"))) {
-            bb = newByteBuf(8, encodingType.endsWith("_BE"));
-            bb.writeLong(((LongExpression)valueArg).getLong());
-          }
-          break;
-        case "FLOAT":
-          if (valueArg instanceof FloatExpression && isEqualityFn) {
-          bb = newByteBuf(4, true);
-            bb.writeFloat(((FloatExpression)valueArg).getFloat());
-          }
-          break;
-        case "DOUBLE":
-          if (valueArg instanceof DoubleExpression && isEqualityFn) {
-            bb = newByteBuf(8, true);
-            bb.writeDouble(((DoubleExpression)valueArg).getDouble());
-          }
-          break;
-        case "TIME_EPOCH":
-        case "TIME_EPOCH_BE":
-          if (valueArg instanceof TimeExpression) {
-            bb = newByteBuf(8, encodingType.endsWith("_BE"));
-            bb.writeLong(((TimeExpression)valueArg).getTime());
-          }
-          break;
-        case "DATE_EPOCH":
-        case "DATE_EPOCH_BE":
-          if (valueArg instanceof DateExpression) {
-            bb = newByteBuf(8, encodingType.endsWith("_BE"));
-            bb.writeLong(((DateExpression)valueArg).getDate());
-          }
-          break;
-        case "BOOLEAN_BYTE":
-          if (valueArg instanceof BooleanExpression) {
-            bb = newByteBuf(1, false /* does not matter */);
-            bb.writeByte(((BooleanExpression)valueArg).getBoolean() ? 1 : 0);
-          }
-          break;
-        case "DOUBLE_OB":
-        case "DOUBLE_OBD":
-          if (valueArg instanceof DoubleExpression) {
-            bb = newByteBuf(9, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 9);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat64(br,
-                  ((DoubleExpression)valueArg).getDouble(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat64(br,
-                  ((DoubleExpression)valueArg).getDouble(), Order.ASCENDING);
+          case "INT_BE":
+          case "INT":
+          case "UINT_BE":
+          case "UINT":
+          case "UINT4_BE":
+          case "UINT4":
+            if (valueArg instanceof IntExpression
+                && (isEqualityFn || encodingType.startsWith("U"))) {
+              bb = newByteBuf(4, encodingType.endsWith("_BE"));
+              bb.writeInt(((IntExpression) valueArg).getInt());
+            }
+            break;
+          case "BIGINT_BE":
+          case "BIGINT":
+          case "UINT8_BE":
+          case "UINT8":
+            if (valueArg instanceof LongExpression
+                && (isEqualityFn || encodingType.startsWith("U"))) {
+              bb = newByteBuf(8, encodingType.endsWith("_BE"));
+              bb.writeLong(((LongExpression) valueArg).getLong());
+            }
+            break;
+          case "FLOAT":
+            if (valueArg instanceof FloatExpression && isEqualityFn) {
+              bb = newByteBuf(4, true);
+              bb.writeFloat(((FloatExpression) valueArg).getFloat());
+            }
+            break;
+          case "DOUBLE":
+            if (valueArg instanceof DoubleExpression && isEqualityFn) {
+              bb = newByteBuf(8, true);
+              bb.writeDouble(((DoubleExpression) valueArg).getDouble());
             }
-          }
-          break;
-        case "FLOAT_OB":
-        case "FLOAT_OBD":
-          if (valueArg instanceof FloatExpression) {
-            bb = newByteBuf(5, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 5);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat32(br,
-                  ((FloatExpression)valueArg).getFloat(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat32(br,
-                        ((FloatExpression)valueArg).getFloat(), Order.ASCENDING);
+            break;
+          case "TIME_EPOCH":
+          case "TIME_EPOCH_BE":
+            if (valueArg instanceof TimeExpression) {
+              bb = newByteBuf(8, encodingType.endsWith("_BE"));
+              bb.writeLong(((TimeExpression) valueArg).getTime());
             }
-          }
-          break;
-        case "BIGINT_OB":
-        case "BIGINT_OBD":
-          if (valueArg instanceof LongExpression) {
-            bb = newByteBuf(9, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 9);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt64(br,
-                        ((LongExpression)valueArg).getLong(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt64(br,
-                  ((LongExpression)valueArg).getLong(), Order.ASCENDING);
+            break;
+          case "DATE_EPOCH":
+          case "DATE_EPOCH_BE":
+            if (valueArg instanceof DateExpression) {
+              bb = newByteBuf(8, encodingType.endsWith("_BE"));
+              bb.writeLong(((DateExpression) valueArg).getDate());
             }
-          }
-          break;
-        case "INT_OB":
-        case "INT_OBD":
-          if (valueArg instanceof IntExpression) {
-            bb = newByteBuf(5, true);
-            PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 5);
-            if (encodingType.endsWith("_OBD")) {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt32(br,
-                  ((IntExpression)valueArg).getInt(), Order.DESCENDING);
-              this.sortOrderAscending = false;
-            } else {
-              org.apache.hadoop.hbase.util.OrderedBytes.encodeInt32(br,
-                        ((IntExpression)valueArg).getInt(), Order.ASCENDING);
+            break;
+          case "BOOLEAN_BYTE":
+            if (valueArg instanceof BooleanExpression) {
+              bb = newByteBuf(1, false /* does not matter */);
+              bb.writeByte(((BooleanExpression) valueArg).getBoolean() ? 1 : 0);
             }
-          }
-          break;
-        case "UTF8":
-          // let visitSchemaPath() handle this.
-          return e.getInput().accept(this, valueArg);
+            break;
+          case "DOUBLE_OB":
+          case "DOUBLE_OBD":
+            if (valueArg instanceof DoubleExpression) {
+              bb = newByteBuf(9, true);
+              PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 9);
+              if (encodingType.endsWith("_OBD")) {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat64(br,
+                  ((DoubleExpression) valueArg).getDouble(), Order.DESCENDING);
+                this.sortOrderAscending = false;
+              } else {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat64(br,
+                  ((DoubleExpression) valueArg).getDouble(), Order.ASCENDING);
+              }
+            }
+            break;
+          case "FLOAT_OB":
+          case "FLOAT_OBD":
+            if (valueArg instanceof FloatExpression) {
+              bb = newByteBuf(5, true);
+              PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 5);
+              if (encodingType.endsWith("_OBD")) {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat32(br,
+                  ((FloatExpression) valueArg).getFloat(), Order.DESCENDING);
+                this.sortOrderAscending = false;
+              } else {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeFloat32(br,
+                          ((FloatExpression) valueArg).getFloat(), Order.ASCENDING);
+              }
+            }
+            break;
+          case "BIGINT_OB":
+          case "BIGINT_OBD":
+            if (valueArg instanceof LongExpression) {
+              bb = newByteBuf(9, true);
+              PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 9);
+              if (encodingType.endsWith("_OBD")) {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeInt64(br,
+                          ((LongExpression) valueArg).getLong(), Order.DESCENDING);
+                this.sortOrderAscending = false;
+              } else {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeInt64(br,
+                  ((LongExpression) valueArg).getLong(), Order.ASCENDING);
+              }
+            }
+            break;
+          case "INT_OB":
+          case "INT_OBD":
+            if (valueArg instanceof IntExpression) {
+              bb = newByteBuf(5, true);
+              PositionedByteRange br = new SimplePositionedMutableByteRange(bb.array(), 0, 5);
+              if (encodingType.endsWith("_OBD")) {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeInt32(br,
+                  ((IntExpression) valueArg).getInt(), Order.DESCENDING);
+                this.sortOrderAscending = false;
+              } else {
+                org.apache.hadoop.hbase.util.OrderedBytes.encodeInt32(br,
+                          ((IntExpression) valueArg).getInt(), Order.ASCENDING);
+              }
+            }
+            break;
+          case "UTF8":
+            // let visitSchemaPath() handle this.
+            return e.getInput().accept(this, valueArg);
+          default:
+            bb = getByteBuf(valueArg, encodingType);
         }
 
         if (bb != null) {
@@ -325,53 +349,57 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
     return false;
   }
 
+  protected ByteBuf getByteBuf(LogicalExpression valueArg, String encodingType) {
+    return null;
+  }
+
   private Boolean visitRowKeyPrefixConvertExpression(ConvertExpression e,
-    int prefixLength, LogicalExpression valueArg) {
+                                                     int prefixLength, LogicalExpression valueArg) {
     String encodingType = e.getEncodingType();
     rowKeyPrefixStartRow = HConstants.EMPTY_START_ROW;
-    rowKeyPrefixStopRow  = HConstants.EMPTY_START_ROW;
-    rowKeyPrefixFilter   = null;
+    rowKeyPrefixStopRow = HConstants.EMPTY_START_ROW;
+    rowKeyPrefixFilter = null;
 
-    if ((encodingType.compareTo("UINT4_BE") == 0) ||
-        (encodingType.compareTo("UINT_BE") == 0)) {
+    if ((encodingType.compareTo("UINT4_BE") == 0)
+        || (encodingType.compareTo("UINT_BE") == 0)) {
       if (prefixLength != 4) {
         throw new RuntimeException("Invalid length(" + prefixLength + ") of row-key prefix");
       }
 
       int val;
-      if ((valueArg instanceof IntExpression) == false) {
+      if (!(valueArg instanceof IntExpression)) {
         return false;
       }
 
-      val = ((IntExpression)valueArg).getInt();
+      val = ((IntExpression) valueArg).getInt();
 
       // For TIME_EPOCH_BE/BIGINT_BE encoding, the operators that we push-down are =, <>, <, <=, >, >=
       switch (functionName) {
-      case "equal":
-      rowKeyPrefixFilter = new PrefixFilter(ByteBuffer.allocate(4).putInt(val).array());
-      rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val).array();
-      rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val + 1).array();
-      return true;
-    case "greater_than_or_equal_to":
-      rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val).array();
-        return true;
-      case "greater_than":
-      rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val + 1).array();
-        return true;
-      case "less_than_or_equal_to":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val + 1).array();
-        return true;
-      case "less_than":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val).array();
-        return true;
+        case "equal":
+          rowKeyPrefixFilter = new PrefixFilter(ByteBuffer.allocate(4).putInt(val).array());
+          rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val).array();
+          rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val + 1).array();
+          return true;
+        case "greater_than_or_equal_to":
+          rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val).array();
+          return true;
+        case "greater_than":
+          rowKeyPrefixStartRow = ByteBuffer.allocate(4).putInt(val + 1).array();
+          return true;
+        case "less_than_or_equal_to":
+          rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val + 1).array();
+          return true;
+        case "less_than":
+          rowKeyPrefixStopRow = ByteBuffer.allocate(4).putInt(val).array();
+          return true;
       }
 
       return false;
     }
 
-    if ((encodingType.compareTo("TIMESTAMP_EPOCH_BE") == 0) ||
-        (encodingType.compareTo("TIME_EPOCH_BE") == 0) ||
-        (encodingType.compareTo("UINT8_BE") == 0)) {
+    if ((encodingType.compareTo("TIMESTAMP_EPOCH_BE") == 0)
+        || (encodingType.compareTo("TIME_EPOCH_BE") == 0)
+        || (encodingType.compareTo("UINT8_BE") == 0)) {
 
       if (prefixLength != 8) {
         throw new RuntimeException("Invalid length(" + prefixLength + ") of row-key prefix");
@@ -379,23 +407,23 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
 
       long val;
       if (encodingType.compareTo("TIME_EPOCH_BE") == 0) {
-        if ((valueArg instanceof TimeExpression) == false) {
+        if (!(valueArg instanceof TimeExpression)) {
           return false;
         }
 
-        val = ((TimeExpression)valueArg).getTime();
-      } else if (encodingType.compareTo("UINT8_BE") == 0){
-        if ((valueArg instanceof LongExpression) == false) {
+        val = ((TimeExpression) valueArg).getTime();
+      } else if (encodingType.compareTo("UINT8_BE") == 0) {
+        if (!(valueArg instanceof LongExpression)) {
           return false;
         }
 
-        val = ((LongExpression)valueArg).getLong();
+        val = ((LongExpression) valueArg).getLong();
       } else if (encodingType.compareTo("TIMESTAMP_EPOCH_BE") == 0) {
-        if ((valueArg instanceof TimeStampExpression) == false) {
+        if (!(valueArg instanceof TimeStampExpression)) {
           return false;
         }
 
-        val = ((TimeStampExpression)valueArg).getTimeStamp();
+        val = ((TimeStampExpression) valueArg).getTimeStamp();
       } else {
         // Should not reach here.
         return false;
@@ -403,30 +431,30 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
 
       // For TIME_EPOCH_BE/BIGINT_BE encoding, the operators that we push-down are =, <>, <, <=, >, >=
       switch (functionName) {
-      case "equal":
-        rowKeyPrefixFilter = new PrefixFilter(ByteBuffer.allocate(8).putLong(val).array());
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val).array();
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val + 1).array();
-        return true;
-      case "greater_than_or_equal_to":
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val).array();
-        return true;
-      case "greater_than":
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val + 1).array();
-        return true;
-      case "less_than_or_equal_to":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val + 1).array();
-        return true;
-      case "less_than":
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val).array();
-        return true;
+        case "equal":
+          rowKeyPrefixFilter = new PrefixFilter(ByteBuffer.allocate(8).putLong(val).array());
+          rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val).array();
+          rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val + 1).array();
+          return true;
+        case "greater_than_or_equal_to":
+          rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val).array();
+          return true;
+        case "greater_than":
+          rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(val + 1).array();
+          return true;
+        case "less_than_or_equal_to":
+          rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val + 1).array();
+          return true;
+        case "less_than":
+          rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(val).array();
+          return true;
       }
 
       return false;
     }
 
     if (encodingType.compareTo("DATE_EPOCH_BE") == 0) {
-      if ((valueArg instanceof DateExpression) == false) {
+      if (!(valueArg instanceof DateExpression)) {
         return false;
       }
 
@@ -434,41 +462,41 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
         throw new RuntimeException("Invalid length(" + prefixLength + ") of row-key prefix");
       }
 
-      final long MILLISECONDS_IN_A_DAY  = (long)1000 * 60 * 60 * 24;
+      final long MILLISECONDS_IN_A_DAY = 1000 * 60 * 60 * 24;
       long dateToSet;
       // For DATE encoding, the operators that we push-down are =, <>, <, <=, >, >=
       switch (functionName) {
-      case "equal":
-        long startDate = ((DateExpression)valueArg).getDate();
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(startDate).array();
-        long stopDate  = ((DateExpression)valueArg).getDate() + MILLISECONDS_IN_A_DAY;
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(stopDate).array();
-        return true;
-      case "greater_than_or_equal_to":
-        dateToSet = ((DateExpression)valueArg).getDate();
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
-      case "greater_than":
-        dateToSet = ((DateExpression)valueArg).getDate() + MILLISECONDS_IN_A_DAY;
-        rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
-      case "less_than_or_equal_to":
-        dateToSet = ((DateExpression)valueArg).getDate() + MILLISECONDS_IN_A_DAY;
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
-      case "less_than":
-        dateToSet = ((DateExpression)valueArg).getDate();
-        rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
-        return true;
+        case "equal":
+          long startDate = ((DateExpression) valueArg).getDate();
+          rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(startDate).array();
+          long stopDate = ((DateExpression) valueArg).getDate() + MILLISECONDS_IN_A_DAY;
+          rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(stopDate).array();
+          return true;
+        case "greater_than_or_equal_to":
+          dateToSet = ((DateExpression) valueArg).getDate();
+          rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
+          return true;
+        case "greater_than":
+          dateToSet = ((DateExpression) valueArg).getDate() + MILLISECONDS_IN_A_DAY;
+          rowKeyPrefixStartRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
+          return true;
+        case "less_than_or_equal_to":
+          dateToSet = ((DateExpression) valueArg).getDate() + MILLISECONDS_IN_A_DAY;
+          rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
+          return true;
+        case "less_than":
+          dateToSet = ((DateExpression) valueArg).getDate();
+          rowKeyPrefixStopRow = ByteBuffer.allocate(8).putLong(dateToSet).array();
+          return true;
       }
 
       return false;
-  }
+    }
 
-  return false;
-}
+    return false;
+  }
 
-@Override
+  @Override
   public Boolean visitUnknown(LogicalExpression e, LogicalExpression valueArg) throws RuntimeException {
     return false;
   }
@@ -483,7 +511,7 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
     return false;
   }
 
-  private static ByteBuf newByteBuf(int size, boolean bigEndian) {
+  protected static ByteBuf newByteBuf(int size, boolean bigEndian) {
     return Unpooled.wrappedBuffer(new byte[size])
         .order(bigEndian ? ByteOrder.BIG_ENDIAN : ByteOrder.LITTLE_ENDIAN)
         .writerIndex(0);
@@ -525,5 +553,4 @@ class CompareFunctionsProcessor extends AbstractExprVisitor<Boolean, LogicalExpr
         .put("less_than", "greater_than")
         .build();
   }
-
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/HBaseFilterBuilder.java
----------------------------------------------------------------------
diff --git a/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/HBaseFilterBuilder.java b/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/HBaseFilterBuilder.java
index 394e128..8d2e8ff 100644
--- a/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/HBaseFilterBuilder.java
+++ b/contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/HBaseFilterBuilder.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -99,7 +99,7 @@ public class HBaseFilterBuilder extends AbstractExprVisitor<HBaseScanSpec, Void,
         nullComparatorSupported = groupScan.getHBaseConf().getBoolean("drill.hbase.supports.null.comparator", false);
       }
 
-      CompareFunctionsProcessor processor = CompareFunctionsProcessor.process(call, nullComparatorSupported);
+      CompareFunctionsProcessor processor = CompareFunctionsProcessor.createFunctionsProcessorInstance(call, nullComparatorSupported);
       if (processor.isSuccess()) {
         nodeScanSpec = createHBaseScanSpec(call, processor);
       }
@@ -155,7 +155,7 @@ public class HBaseFilterBuilder extends AbstractExprVisitor<HBaseScanSpec, Void,
     SchemaPath field = processor.getPath();
     byte[] fieldValue = processor.getValue();
     boolean sortOrderAscending = processor.isSortOrderAscending();
-    boolean isRowKey = field.getAsUnescapedPath().equals(ROW_KEY);
+    boolean isRowKey = field.getRootSegmentPath().equals(ROW_KEY);
     if (!(isRowKey
         || (!field.getRootSegment().isLastPath()
             && field.getRootSegment().getChild().isLastPath()

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/planner/sql/logical/ConvertHiveParquetScanToDrillParquetScan.java
----------------------------------------------------------------------
diff --git a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/planner/sql/logical/ConvertHiveParquetScanToDrillParquetScan.java b/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/planner/sql/logical/ConvertHiveParquetScanToDrillParquetScan.java
index bb59600..b1b966a 100644
--- a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/planner/sql/logical/ConvertHiveParquetScanToDrillParquetScan.java
+++ b/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/planner/sql/logical/ConvertHiveParquetScanToDrillParquetScan.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -233,7 +233,7 @@ public class ConvertHiveParquetScanToDrillParquetScan extends StoragePluginOptim
     // unlike above where we expanded the '*'. HiveScan and related (subscan) can handle '*'.
     final List<SchemaPath> nativeScanCols = Lists.newArrayList();
     for(SchemaPath colName : hiveScanRel.getColumns()) {
-      final String partitionCol = partitionColMapping.get(colName.getAsUnescapedPath());
+      final String partitionCol = partitionColMapping.get(colName.getRootSegmentPath());
       if (partitionCol != null) {
         nativeScanCols.add(SchemaPath.getSimplePath(partitionCol));
       } else {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveDrillNativeScanBatchCreator.java
----------------------------------------------------------------------
diff --git a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveDrillNativeScanBatchCreator.java b/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveDrillNativeScanBatchCreator.java
index 66f41e2..6c10d25 100644
--- a/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveDrillNativeScanBatchCreator.java
+++ b/contrib/storage-hive/core/src/main/java/org/apache/drill/exec/store/hive/HiveDrillNativeScanBatchCreator.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -80,10 +80,10 @@ public class HiveDrillNativeScanBatchCreator implements BatchCreator<HiveDrillNa
       newColumns = Lists.newArrayList();
       Pattern pattern = Pattern.compile(String.format("%s[0-9]+", partitionDesignator));
       for (SchemaPath column : columns) {
-        Matcher m = pattern.matcher(column.getAsUnescapedPath());
+        Matcher m = pattern.matcher(column.getRootSegmentPath());
         if (m.matches()) {
           selectedPartitionColumns.add(
-              Integer.parseInt(column.getAsUnescapedPath().substring(partitionDesignator.length())));
+              Integer.parseInt(column.getRootSegmentPath().substring(partitionDesignator.length())));
         } else {
           newColumns.add(column);
         }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordReader.java
----------------------------------------------------------------------
diff --git a/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordReader.java b/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordReader.java
index ef7efcf..b9a7bf9 100644
--- a/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordReader.java
+++ b/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordReader.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -106,7 +106,7 @@ public class KuduRecordReader extends AbstractRecordReader {
       if (!isStarQuery()) {
         List<String> colNames = Lists.newArrayList();
         for (SchemaPath p : this.getColumns()) {
-          colNames.add(p.getAsUnescapedPath());
+          colNames.add(p.getRootSegmentPath());
         }
         builder.setProjectedColumnNames(colNames);
       }
@@ -199,7 +199,7 @@ public class KuduRecordReader extends AbstractRecordReader {
         majorType = Types.required(minorType);
       }
       MaterializedField field = MaterializedField.create(name, majorType);
-      final Class<? extends ValueVector> clazz = (Class<? extends ValueVector>) TypeHelper.getValueVectorClass(
+      final Class<? extends ValueVector> clazz = TypeHelper.getValueVectorClass(
           minorType, majorType.getMode());
       ValueVector vector = output.addField(field, clazz);
       vector.allocateNew();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordWriterImpl.java
----------------------------------------------------------------------
diff --git a/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordWriterImpl.java b/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordWriterImpl.java
index 2e40acf..9b98ccd 100644
--- a/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordWriterImpl.java
+++ b/contrib/storage-kudu/src/main/java/org/apache/drill/exec/store/kudu/KuduRecordWriterImpl.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -76,7 +76,7 @@ public class KuduRecordWriterImpl extends KuduRecordWriter {
       if (!checkForTable(name)) {
         List<ColumnSchema> columns = new ArrayList<>();
         for (MaterializedField f : schema) {
-          columns.add(new ColumnSchema.ColumnSchemaBuilder(f.getLastName(), getType(f.getType()))
+          columns.add(new ColumnSchema.ColumnSchemaBuilder(f.getName(), getType(f.getType()))
               .nullable(f.getType().getMode() == DataMode.OPTIONAL)
               .key(i == 0).build());
           i++;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/contrib/storage-mongo/src/main/java/org/apache/drill/exec/store/mongo/MongoFilterBuilder.java
----------------------------------------------------------------------
diff --git a/contrib/storage-mongo/src/main/java/org/apache/drill/exec/store/mongo/MongoFilterBuilder.java b/contrib/storage-mongo/src/main/java/org/apache/drill/exec/store/mongo/MongoFilterBuilder.java
index 379f449..70e9a1a 100644
--- a/contrib/storage-mongo/src/main/java/org/apache/drill/exec/store/mongo/MongoFilterBuilder.java
+++ b/contrib/storage-mongo/src/main/java/org/apache/drill/exec/store/mongo/MongoFilterBuilder.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -165,7 +165,7 @@ public class MongoFilterBuilder extends
       SchemaPath field, Object fieldValue) throws ClassNotFoundException,
       IOException {
     // extract the field name
-    String fieldName = field.getAsUnescapedPath();
+    String fieldName = field.getRootSegmentPath();
     MongoCompareOp compareOp = null;
     switch (functionName) {
     case "equal":

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java b/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
index a2428a7..b88d4a1 100644
--- a/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
+++ b/exec/java-exec/src/main/codegen/templates/EventBasedRecordWriter.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -82,11 +82,11 @@ public class EventBasedRecordWriter {
     try {
       int fieldId = 0;
       for (VectorWrapper w : batch) {
-        if (w.getField().getPath().equalsIgnoreCase(WriterPrel.PARTITION_COMPARATOR_FIELD)) {
+        if (w.getField().getName().equalsIgnoreCase(WriterPrel.PARTITION_COMPARATOR_FIELD)) {
           continue;
         }
         FieldReader reader = w.getValueVector().getReader();
-        FieldConverter converter = getConverter(recordWriter, fieldId++, w.getField().getLastName(), reader);
+        FieldConverter converter = getConverter(recordWriter, fieldId++, w.getField().getName(), reader);
         fieldConverters.add(converter);
       }
     } catch(Exception e) {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/codegen/templates/StringOutputRecordWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/codegen/templates/StringOutputRecordWriter.java b/exec/java-exec/src/main/codegen/templates/StringOutputRecordWriter.java
index 6d92a2f..70c699e 100644
--- a/exec/java-exec/src/main/codegen/templates/StringOutputRecordWriter.java
+++ b/exec/java-exec/src/main/codegen/templates/StringOutputRecordWriter.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -64,7 +64,7 @@ public abstract class StringOutputRecordWriter extends AbstractRecordWriter {
     BatchSchema schema = batch.getSchema();
     List<String> columnNames = Lists.newArrayList();
     for (int i=0; i < schema.getFieldCount(); i++) {
-      columnNames.add(schema.getColumn(i).getLastName());
+      columnNames.add(schema.getColumn(i).getName());
     }
 
     startNewSchema(columnNames);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/client/DumpCat.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/client/DumpCat.java b/exec/java-exec/src/main/java/org/apache/drill/exec/client/DumpCat.java
index cdbd3b4..6c85921 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/client/DumpCat.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/client/DumpCat.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -100,16 +100,16 @@ public class DumpCat {
    *  Options as input to JCommander.
    */
   static class Options {
-    @Parameter(names = {"-f"}, description = "file containing dump", required=true)
+    @Parameter(names = {"-f"}, description = "file containing dump", required = true)
     public String location = null;
 
-    @Parameter(names = {"-batch"}, description = "id of batch to show", required=false, validateWith = BatchNumValidator.class)
+    @Parameter(names = {"-batch"}, description = "id of batch to show", required = false, validateWith = BatchNumValidator.class)
     public int batch = -1;
 
-    @Parameter(names = {"-include-headers"}, description = "whether include header of batch", required=false)
+    @Parameter(names = {"-include-headers"}, description = "whether include header of batch", required = false)
     public boolean include_headers = false;
 
-    @Parameter(names = {"-h", "-help", "--help"}, description = "show usage", help=true)
+    @Parameter(names = {"-h", "-help", "--help"}, description = "show usage", help = true)
     public boolean help = false;
    }
 
@@ -138,7 +138,7 @@ public class DumpCat {
 
     @Override
     public String toString() {
-      String avgRecSizeStr = null;
+      String avgRecSizeStr;
       if (this.rows > 0) {
         avgRecSizeStr = String.format("Average Record Size : %d ", this.dataSize/this.rows);
       } else {
@@ -175,7 +175,7 @@ public class DumpCat {
     while (input.available() > 0) {
       final VectorAccessibleSerializable vcSerializable = new VectorAccessibleSerializable(DumpCat.allocator);
       vcSerializable.readFromStream(input);
-      final VectorContainer vectorContainer = (VectorContainer) vcSerializable.get();
+      final VectorContainer vectorContainer = vcSerializable.get();
 
       aggBatchMetaInfo.add(getBatchMetaInfo(vcSerializable));
 
@@ -224,7 +224,7 @@ public class DumpCat {
       vcSerializable.readFromStream(input);
 
       if (batchNum != targetBatchNum) {
-        final VectorContainer vectorContainer = (VectorContainer) vcSerializable.get();
+        final VectorContainer vectorContainer = vcSerializable.get();
         vectorContainer.zeroVectors();
       }
     }
@@ -237,13 +237,13 @@ public class DumpCat {
 
     if (vcSerializable != null) {
       showSingleBatch(vcSerializable, showHeader);
-      final VectorContainer vectorContainer = (VectorContainer) vcSerializable.get();
+      final VectorContainer vectorContainer = vcSerializable.get();
       vectorContainer.zeroVectors();
     }
   }
 
   private void showSingleBatch (VectorAccessibleSerializable vcSerializable, boolean showHeader) {
-    final VectorContainer vectorContainer = (VectorContainer) vcSerializable.get();
+    final VectorContainer vectorContainer = vcSerializable.get();
 
     /* show the header of the batch */
     if (showHeader) {
@@ -253,7 +253,7 @@ public class DumpCat {
       for (final VectorWrapper w : vectorContainer) {
         final MaterializedField field = w.getValueVector().getField();
         System.out.println (String.format("name : %s, minor_type : %s, data_mode : %s",
-                                          field.getPath(),
+                                          field.getName(),
                                           field.getType().getMinorType().toString(),
                                           field.isNullable() ? "nullable":"non-nullable"
                           ));
@@ -268,8 +268,8 @@ public class DumpCat {
   private BatchMetaInfo getBatchMetaInfo(VectorAccessibleSerializable vcSerializable) {
     final VectorAccessible vectorContainer = vcSerializable.get();
 
-    int rows = 0;
-    int selectedRows = 0;
+    int rows;
+    int selectedRows;
     int totalDataSize = 0;
 
     rows = vectorContainer.getRecordCount();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/ScanBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/ScanBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/ScanBatch.java
index 4218069..803bd48 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/ScanBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/ScanBatch.java
@@ -359,19 +359,19 @@ public class ScanBatch implements CloseableRecordBatch {
     public <T extends ValueVector> T addField(MaterializedField field,
                                               Class<T> clazz) throws SchemaChangeException {
       // Check if the field exists.
-      ValueVector v = fieldVectorMap.get(field.getPath());
+      ValueVector v = fieldVectorMap.get(field.getName());
       if (v == null || v.getClass() != clazz) {
         // Field does not exist--add it to the map and the output container.
         v = TypeHelper.getNewVector(field, allocator, callBack);
         if (!clazz.isAssignableFrom(v.getClass())) {
           throw new SchemaChangeException(
-              String.format(
-                  "The class that was provided, %s, does not correspond to the "
-                  + "expected vector type of %s.",
-                  clazz.getSimpleName(), v.getClass().getSimpleName()));
+            String.format(
+              "The class that was provided, %s, does not correspond to the "
+                + "expected vector type of %s.",
+              clazz.getSimpleName(), v.getClass().getSimpleName()));
         }
 
-        final ValueVector old = fieldVectorMap.put(field.getPath(), v);
+        final ValueVector old = fieldVectorMap.put(field.getName(), v);
         if (old != null) {
           old.clear();
           container.remove(old);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/TopN/PriorityQueueTemplate.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/TopN/PriorityQueueTemplate.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/TopN/PriorityQueueTemplate.java
index ff159cd..b82dfc8 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/TopN/PriorityQueueTemplate.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/TopN/PriorityQueueTemplate.java
@@ -71,7 +71,7 @@ public abstract class PriorityQueueTemplate implements PriorityQueue {
     BatchSchema schema = container.getSchema();
     VectorContainer newContainer = new VectorContainer();
     for (MaterializedField field : schema) {
-      int[] ids = container.getValueVectorId(SchemaPath.getSimplePath(field.getPath())).getFieldIds();
+      int[] ids = container.getValueVectorId(SchemaPath.getSimplePath(field.getName())).getFieldIds();
       newContainer.add(container.getValueAccessorById(field.getValueClass(), ids).getValueVectors());
     }
     newContainer.buildSchema(BatchSchema.SelectionVectorMode.FOUR_BYTE);


[2/4] drill git commit: DRILL-4264: Allow field names to include dots

Posted by am...@apache.org.
http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/FieldIdUtil.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/FieldIdUtil.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/FieldIdUtil.java
index 0394029..2d3c13c 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/FieldIdUtil.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/FieldIdUtil.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -163,7 +163,7 @@ public class FieldIdUtil {
   }
 
   public static TypedFieldId getFieldId(ValueVector vector, int id, SchemaPath expectedPath, boolean hyper) {
-    if (!expectedPath.getRootSegment().getNameSegment().getPath().equalsIgnoreCase(vector.getField().getPath())) {
+    if (!expectedPath.getRootSegment().getPath().equalsIgnoreCase(vector.getField().getName())) {
       return null;
     }
     PathSegment seg = expectedPath.getRootSegment();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapUtility.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapUtility.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapUtility.java
index 7a5863a..72c094a 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapUtility.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/MapUtility.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -222,7 +222,7 @@ public class MapUtility {
       }
     } catch (ClassCastException e) {
       final MaterializedField field = fieldReader.getField();
-      throw new DrillRuntimeException(String.format(TYPE_MISMATCH_ERROR, field.getPath(), field.getType()));
+      throw new DrillRuntimeException(String.format(TYPE_MISMATCH_ERROR, field.getName(), field.getType()));
     }
   }
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/BaseTestQuery.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/BaseTestQuery.java b/exec/java-exec/src/test/java/org/apache/drill/BaseTestQuery.java
index 4d49c7b..f7f41fc 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/BaseTestQuery.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/BaseTestQuery.java
@@ -626,6 +626,11 @@ public class BaseTestQuery extends ExecTest {
     copyMetaDataCacheToTempWithReplacements(srcFileOnClassPath, destFolderInTmp, metaFileName, null);
   }
 
+  protected static void copyMetaDataCacheToTempReplacingInternalPaths(Path srcFileOnClassPath, String destFolderInTmp,
+                                                                      String metaFileName) throws IOException {
+    copyMetaDataCacheToTempReplacingInternalPaths(srcFileOnClassPath.toUri().getPath(), destFolderInTmp, metaFileName);
+  }
+
   /**
    * Old metadata cache files include full paths to the files that have been scanned.
    * <p>

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/DrillTestWrapper.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/DrillTestWrapper.java b/exec/java-exec/src/test/java/org/apache/drill/DrillTestWrapper.java
index 64aeef8..2bc78d4 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/DrillTestWrapper.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/DrillTestWrapper.java
@@ -14,7 +14,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- ******************************************************************************/
+ */
 package org.apache.drill;
 
 import static org.junit.Assert.assertEquals;
@@ -33,7 +33,6 @@ import java.util.Map;
 import java.util.Set;
 import java.util.TreeMap;
 
-import com.google.common.base.Preconditions;
 import org.apache.commons.lang3.tuple.Pair;
 import org.apache.drill.common.expression.SchemaPath;
 import org.apache.drill.common.types.TypeProtos;
@@ -239,7 +238,7 @@ public class DrillTestWrapper {
       logger.debug("reading batch with " + loader.getRecordCount() + " rows, total read so far " + totalRecords);
       totalRecords += loader.getRecordCount();
       for (VectorWrapper<?> w : loader) {
-        String field = SchemaPath.getSimplePath(w.getField().getPath()).toExpr();
+        String field = SchemaPath.getSimplePath(w.getField().getName()).toExpr();
         if (!combinedVectors.containsKey(field)) {
           MaterializedField mf = w.getField();
           ValueVector[] vvList = (ValueVector[]) Array.newInstance(mf.getValueClass(), 1);
@@ -350,7 +349,7 @@ public class DrillTestWrapper {
       if (schema == null) {
         schema = loader.getSchema();
         for (MaterializedField mf : schema) {
-          combinedVectors.put(SchemaPath.getSimplePath(mf.getPath()).toExpr(), new ArrayList<Object>());
+          combinedVectors.put(SchemaPath.getSimplePath(mf.getName()).toExpr(), new ArrayList<>());
         }
       } else {
         // TODO - actually handle schema changes, this is just to get access to the SelectionVectorMode
@@ -361,7 +360,7 @@ public class DrillTestWrapper {
       logger.debug("reading batch with " + loader.getRecordCount() + " rows, total read so far " + totalRecords);
       totalRecords += loader.getRecordCount();
       for (VectorWrapper<?> w : loader) {
-        String field = SchemaPath.getSimplePath(w.getField().getPath()).toExpr();
+        String field = SchemaPath.getSimplePath(w.getField().getName()).toExpr();
         ValueVector[] vectors;
         if (w.isHyper()) {
           vectors = w.getValueVectors();
@@ -428,18 +427,18 @@ public class DrillTestWrapper {
 
       final BatchSchema schema = loader.getSchema();
       final List<Pair<SchemaPath, TypeProtos.MajorType>> expectedSchema = testBuilder.getExpectedSchema();
-      if(schema.getFieldCount() != expectedSchema.size()) {
+      if (schema.getFieldCount() != expectedSchema.size()) {
         throw new Exception("Expected and actual numbers of columns do not match.");
       }
 
-      for(int i = 0; i < schema.getFieldCount(); ++i) {
-        final String actualSchemaPath = schema.getColumn(i).getPath();
+      for (int i = 0; i < schema.getFieldCount(); ++i) {
+        final String actualSchemaPath = schema.getColumn(i).getName();
         final TypeProtos.MajorType actualMajorType = schema.getColumn(i).getType();
 
-        final String expectedSchemaPath = expectedSchema.get(i).getLeft().getAsUnescapedPath();
+        final String expectedSchemaPath = expectedSchema.get(i).getLeft().getRootSegmentPath();
         final TypeProtos.MajorType expectedMajorType = expectedSchema.get(i).getValue();
 
-        if(!actualSchemaPath.equals(expectedSchemaPath)
+        if (!actualSchemaPath.equals(expectedSchemaPath)
             || !actualMajorType.equals(expectedMajorType)) {
           throw new Exception(String.format("Schema path or type mismatch for column #%d:\n" +
                   "Expected schema path: %s\nActual   schema path: %s\nExpected type: %s\nActual   type: %s",
@@ -448,8 +447,8 @@ public class DrillTestWrapper {
         }
       }
 
-    }  finally {
-      if(batch != null) {
+    } finally {
+      if (batch != null) {
         batch.release();
       }
       loader.clear();
@@ -609,7 +608,7 @@ public class DrillTestWrapper {
   private Map<SchemaPath, TypeProtos.MajorType> getTypeMapFromBatch(QueryDataBatch batch) {
     Map<SchemaPath, TypeProtos.MajorType> typeMap = new HashMap<>();
     for (int i = 0; i < batch.getHeader().getDef().getFieldCount(); i++) {
-      typeMap.put(SchemaPath.getSimplePath(MaterializedField.create(batch.getHeader().getDef().getField(i)).getPath()),
+      typeMap.put(SchemaPath.getSimplePath(MaterializedField.create(batch.getHeader().getDef().getField(i)).getName()),
           batch.getHeader().getDef().getField(i).getMajorType());
     }
     return typeMap;
@@ -646,9 +645,9 @@ public class DrillTestWrapper {
             if (obj instanceof Text) {
               obj = obj.toString();
             }
-            record.put(SchemaPath.getSimplePath(w.getField().getPath()).toExpr(), obj);
+            record.put(SchemaPath.getSimplePath(w.getField().getName()).toExpr(), obj);
           }
-          record.put(SchemaPath.getSimplePath(w.getField().getPath()).toExpr(), obj);
+          record.put(SchemaPath.getSimplePath(w.getField().getName()).toExpr(), obj);
         }
         materializedRecords.add(record);
       }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/PlanTestBase.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/PlanTestBase.java b/exec/java-exec/src/test/java/org/apache/drill/PlanTestBase.java
index e422a77..eb11532 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/PlanTestBase.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/PlanTestBase.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -349,7 +349,7 @@ public class PlanTestBase extends BaseTestQuery {
       }
 
       if (!silent) {
-        System.out.println(vw.getValueVector().getField().getPath());
+        System.out.println(vw.getValueVector().getField().getName());
       }
       final ValueVector vv = vw.getValueVector();
       for (int i = 0; i < vv.getAccessor().getValueCount(); i++) {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/TestUnionAll.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/TestUnionAll.java b/exec/java-exec/src/test/java/org/apache/drill/TestUnionAll.java
index ee350ce..6965ab5 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/TestUnionAll.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/TestUnionAll.java
@@ -28,9 +28,12 @@ import org.apache.drill.exec.work.foreman.SqlUnsupportedException;
 import org.apache.drill.exec.work.foreman.UnsupportedRelOperatorException;
 import org.junit.Test;
 
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
 import java.util.List;
 
-public class TestUnionAll extends BaseTestQuery{
+public class TestUnionAll extends BaseTestQuery {
 
   private static final String sliceTargetSmall = "alter session set `planner.slice_target` = 1";
   private static final String sliceTargetDefault = "alter session reset `planner.slice_target`";
@@ -1189,4 +1192,41 @@ public class TestUnionAll extends BaseTestQuery{
         .go();
   }
 
+  @Test // DRILL-4264
+  public void testFieldWithDots() throws Exception {
+    File directory = new File(BaseTestQuery.getTempDir("json/input"));
+    try {
+      directory.mkdirs();
+      String fileName = "table.json";
+      try (BufferedWriter writer = new BufferedWriter(new FileWriter(new File(directory, fileName)))) {
+        writer.write("{\"rk.q\": \"a\", \"m\": {\"a.b\":\"1\", \"a\":{\"b\":\"2\"}, \"c\":\"3\"}}");
+      }
+
+      String query = String.format("select * from (" +
+                                              "(select t.m.`a.b` as a,\n" +
+                                                      "t.m.a.b as b,\n" +
+                                                      "t.m['a.b'] as c,\n" +
+                                                      "t.rk.q as d,\n" +
+                                                      "t.`rk.q` as e\n" +
+                                              "from dfs_test.`%1$s/%2$s` t)\n" +
+                                            "union all\n" +
+                                              "(select t.m.`a.b` as a,\n" +
+                                                      "t.m.a.b as b,\n" +
+                                                      "t.m['a.b'] as c,\n" +
+                                                      "t.rk.q as d,\n" +
+                                                      "t.`rk.q` as e\n" +
+                                              "from dfs_test.`%1$s/%2$s` t))",
+                                  directory.toPath().toString(), fileName);
+      testBuilder()
+        .sqlQuery(query)
+        .unOrdered()
+        .baselineColumns("a", "b", "c", "d", "e")
+        .baselineValues("1", "2", "1", null, "a")
+        .baselineValues("1", "2", "1", null, "a")
+        .go();
+
+    } finally {
+      org.apache.commons.io.FileUtils.deleteQuietly(directory);
+    }
+  }
 }
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/expr/TestSchemaPathMaterialization.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/expr/TestSchemaPathMaterialization.java b/exec/java-exec/src/test/java/org/apache/drill/exec/expr/TestSchemaPathMaterialization.java
index c2ab18a..cf7fd90 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/expr/TestSchemaPathMaterialization.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/expr/TestSchemaPathMaterialization.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -93,4 +93,23 @@ public class TestSchemaPathMaterialization extends BaseTestQuery {
       .go();
   }
 
+  @Test //DRILL-4264
+  public void testFieldNameWithDot() throws Exception {
+    final String tableName = "dfs_test.tmp.table_with_dot_field";
+    try {
+      test("create table %s as select o_custkey as `x.y.z` from cp.`tpch/orders.parquet`", tableName);
+
+      final String query = "select * from %s t where `x.y.z`=1091";
+
+      testBuilder()
+        .sqlQuery(query, tableName)
+        .unOrdered()
+        .baselineColumns("`x.y.z`")
+        .baselineValues(1091)
+        .baselineValues(1091)
+        .go();
+    } finally {
+      test("drop table if exists %s", tableName);
+    }
+  }
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/fn/impl/TestAggregateFunctions.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/fn/impl/TestAggregateFunctions.java b/exec/java-exec/src/test/java/org/apache/drill/exec/fn/impl/TestAggregateFunctions.java
index 36ee1b9..cfb1c5f 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/fn/impl/TestAggregateFunctions.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/fn/impl/TestAggregateFunctions.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -30,6 +30,9 @@ import org.apache.drill.exec.rpc.user.QueryDataBatch;
 import org.junit.Ignore;
 import org.junit.Test;
 
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
 import java.util.List;
 import java.util.Map;
 
@@ -570,4 +573,32 @@ public class TestAggregateFunctions extends BaseTestQuery {
     }
   }
 
+  @Test // DRILL-4264
+  public void testCountOnFieldWithDots() throws Exception {
+    File directory = new File(BaseTestQuery.getTempDir("json/input"));
+    try {
+      directory.mkdirs();
+      String fileName = "table.json";
+      try (BufferedWriter writer = new BufferedWriter(new FileWriter(new File(directory, fileName)))) {
+        writer.write("{\"rk.q\": \"a\", \"m\": {\"a.b\":\"1\", \"a\":{\"b\":\"2\"}, \"c\":\"3\"}}");
+      }
+
+      String query = String.format("select count(t.m.`a.b`) as a,\n" +
+                                          "count(t.m.a.b) as b,\n" +
+                                          "count(t.m['a.b']) as c,\n" +
+                                          "count(t.rk.q) as d,\n" +
+                                          "count(t.`rk.q`) as e\n" +
+                                    "from dfs_test.`%s/%s` t",
+                                  directory.toPath().toString(), fileName);
+      testBuilder()
+        .sqlQuery(query)
+        .unOrdered()
+        .baselineColumns("a", "b", "c", "d", "e")
+        .baselineValues(1L, 1L, 1L, 0L, 1L)
+        .go();
+
+    } finally {
+      org.apache.commons.io.FileUtils.deleteQuietly(directory);
+    }
+  }
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestOptiqPlans.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestOptiqPlans.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestOptiqPlans.java
index e016b04..9701c7d 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestOptiqPlans.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestOptiqPlans.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -142,7 +142,7 @@ public class TestOptiqPlans extends ExecTest {
         System.out.println(String.format("Got %d results", b.getHeader().getRowCount()));
         loader.load(b.getHeader().getDef(), b.getData());
         for (final VectorWrapper<?> vw : loader) {
-          System.out.println(vw.getValueVector().getField().getPath());
+          System.out.println(vw.getValueVector().getField().getName());
           final ValueVector vv = vw.getValueVector();
           for (int i = 0; i < vv.getAccessor().getValueCount(); i++) {
             final Object o = vv.getAccessor().getObject(i);
@@ -171,7 +171,7 @@ public class TestOptiqPlans extends ExecTest {
         System.out.println(String.format("Got %d results", b.getHeader().getRowCount()));
         loader.load(b.getHeader().getDef(), b.getData());
         for (final VectorWrapper<?> vw : loader) {
-          System.out.println(vw.getValueVector().getField().getPath());
+          System.out.println(vw.getValueVector().getField().getName());
           final ValueVector vv = vw.getValueVector();
           for (int i = 0; i < vv.getAccessor().getValueCount(); i++) {
             final Object o = vv.getAccessor().getObject(i);
@@ -200,7 +200,7 @@ public class TestOptiqPlans extends ExecTest {
         System.out.println(String.format("Got %d results", b.getHeader().getRowCount()));
         loader.load(b.getHeader().getDef(), b.getData());
         for (final VectorWrapper<?> vw : loader) {
-          System.out.println(vw.getValueVector().getField().getPath());
+          System.out.println(vw.getValueVector().getField().getName());
           final ValueVector vv = vw.getValueVector();
           for (int i = 0; i < vv.getAccessor().getValueCount(); i++) {
             final Object o = vv.getAccessor().getObject(i);
@@ -239,7 +239,7 @@ public class TestOptiqPlans extends ExecTest {
         System.out.println(String.format("Got %d results", b.getHeader().getRowCount()));
         loader.load(b.getHeader().getDef(), b.getData());
         for (final VectorWrapper vw : loader) {
-          System.out.println(vw.getValueVector().getField().getPath());
+          System.out.println(vw.getValueVector().getField().getName());
           final ValueVector vv = vw.getValueVector();
           for (int i = 0; i < vv.getAccessor().getValueCount(); i++) {
             final Object o = vv.getAccessor().getObject(i);
@@ -278,7 +278,7 @@ public class TestOptiqPlans extends ExecTest {
         System.out.println(String.format("Got %d results", b.getHeader().getRowCount()));
         loader.load(b.getHeader().getDef(), b.getData());
         for (final VectorWrapper vw : loader) {
-          System.out.println(vw.getValueVector().getField().getPath());
+          System.out.println(vw.getValueVector().getField().getName());
           final ValueVector vv = vw.getValueVector();
           for (int i = 0; i < vv.getAccessor().getValueCount(); i++) {
             final Object o = vv.getAccessor().getObject(i);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestSimpleFragmentRun.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestSimpleFragmentRun.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestSimpleFragmentRun.java
index 182e19e..3b8ab3f 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestSimpleFragmentRun.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TestSimpleFragmentRun.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -46,7 +46,7 @@ public class TestSimpleFragmentRun extends PopUnitTestBase {
   public void runNoExchangeFragment() throws Exception {
     try (final RemoteServiceSet serviceSet = RemoteServiceSet.getLocalServiceSet();
         final Drillbit bit = new Drillbit(CONFIG, serviceSet);
-        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator());) {
+        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator())) {
 
     // run query.
     bit.run();
@@ -72,7 +72,7 @@ public class TestSimpleFragmentRun extends PopUnitTestBase {
           } else {
             System.out.print("\t");
           }
-          System.out.print(value.getField().getPath());
+          System.out.print(value.getField().getName());
           System.out.print("[");
           System.out.print(value.getField().getType().getMinorType());
           System.out.print("]");
@@ -147,7 +147,7 @@ public class TestSimpleFragmentRun extends PopUnitTestBase {
           } else {
             System.out.print("\t");
           }
-          System.out.print(v.getField().getPath());
+          System.out.print(v.getField().getName());
           System.out.print("[");
           System.out.print(v.getField().getType().getMinorType());
           System.out.print("]");

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestHashJoinAdvanced.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestHashJoinAdvanced.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestHashJoinAdvanced.java
index a70a3f8..16df3ac 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestHashJoinAdvanced.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestHashJoinAdvanced.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -22,9 +22,12 @@ package org.apache.drill.exec.physical.impl.join;
 import org.apache.drill.BaseTestQuery;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
-import org.junit.Ignore;
 import org.junit.Test;
 
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileWriter;
+
 public class TestHashJoinAdvanced extends BaseTestQuery {
 
   // Have to disable merge join, if this testcase is to test "HASH-JOIN".
@@ -88,6 +91,7 @@ public class TestHashJoinAdvanced extends BaseTestQuery {
         .build()
         .run();
   }
+
   @Test
   public void testJoinWithDifferentTypesInCondition() throws Exception {
     String query = "select t1.full_name from cp.`employee.json` t1, cp.`department.json` t2 " +
@@ -112,7 +116,7 @@ public class TestHashJoinAdvanced extends BaseTestQuery {
         .optionSettingQueriesForTestQuery("alter session set `planner.enable_hashjoin` = true")
         .unOrdered()
         .baselineColumns("bigint_col")
-        .baselineValues(1l)
+        .baselineValues(1L)
         .go();
 
     query = "select count(*) col1 from " +
@@ -123,7 +127,38 @@ public class TestHashJoinAdvanced extends BaseTestQuery {
         .sqlQuery(query)
         .unOrdered()
         .baselineColumns("col1")
-        .baselineValues(4l)
+        .baselineValues(4L)
         .go();
   }
+
+  @Test //DRILL-2197 Left Join with complex type in projection
+  public void testJoinWithMapAndDotField() throws Exception {
+    File directory = new File(BaseTestQuery.getTempDir("json/input"));
+    try {
+      directory.mkdirs();
+      String fileName = "table.json";
+      try (BufferedWriter writer = new BufferedWriter(new FileWriter(new File(directory, fileName)))) {
+        writer.write("{\"rk.q\": \"a\", \"m\": {\"a.b\":\"1\", \"a\":{\"b\":\"2\"}, \"c\":\"3\"}}");
+      }
+
+      String query = String.format("select t1.m.`a.b` as a,\n" +
+                                          "t2.m.a.b as b,\n" +
+                                          "t1.m['a.b'] as c,\n" +
+                                          "t2.rk.q as d,\n" +
+                                          "t1.`rk.q` as e\n" +
+                                   "from dfs_test.`%1$s/%2$s` t1,\n" +
+                                        "dfs_test.`%1$s/%2$s` t2\n" +
+                                  "where t1.m.`a.b`=t2.m.`a.b` and t1.m.a.b=t2.m.a.b",
+                                   directory.toPath().toString(), fileName);
+      testBuilder()
+        .sqlQuery(query)
+        .unOrdered()
+        .baselineColumns("a", "b", "c", "d", "e")
+        .baselineValues("1", "2", "1", null, "a")
+        .go();
+
+    } finally {
+      org.apache.commons.io.FileUtils.deleteQuietly(directory);
+    }
+  }
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestMergeJoin.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestMergeJoin.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestMergeJoin.java
index 53c0a67..8ba442d 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestMergeJoin.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/join/TestMergeJoin.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -74,7 +74,7 @@ public class TestMergeJoin extends PopUnitTestBase {
     while (exec.next()) {
       totalRecordCount += exec.getRecordCount();
       for (final ValueVector v : exec) {
-        System.out.print("[" + v.getField().getPath() + "]        ");
+        System.out.print("[" + v.getField().getName() + "]        ");
       }
       System.out.println("\n");
       for (int valueIdx = 0; valueIdx < exec.getRecordCount(); valueIdx++) {
@@ -131,7 +131,7 @@ public class TestMergeJoin extends PopUnitTestBase {
       for (int valueIdx = 0; valueIdx < exec.getRecordCount(); valueIdx++) {
         final List<Object> row = Lists.newArrayList();
         for (final ValueVector v : exec) {
-          row.add(v.getField().getPath() + ":" + v.getAccessor().getObject(valueIdx));
+          row.add(v.getField().getName() + ":" + v.getAccessor().getObject(valueIdx));
         }
         for (final Object cell : row) {
           if (cell == null) {
@@ -182,7 +182,7 @@ public class TestMergeJoin extends PopUnitTestBase {
       for (int valueIdx = 0; valueIdx < exec.getRecordCount(); valueIdx++) {
         final List<Object> row = Lists.newArrayList();
         for (final ValueVector v : exec) {
-          row.add(v.getField().getPath() + ":" + v.getAccessor().getObject(valueIdx));
+          row.add(v.getField().getName() + ":" + v.getAccessor().getObject(valueIdx));
         }
         for (final Object cell : row) {
           if (cell == null) {
@@ -232,7 +232,7 @@ public class TestMergeJoin extends PopUnitTestBase {
       for (int valueIdx = 0; valueIdx < exec.getRecordCount(); valueIdx++) {
         final List<Object> row = Lists.newArrayList();
         for (final ValueVector v : exec) {
-          row.add(v.getField().getPath() + ":" + v.getAccessor().getObject(valueIdx));
+          row.add(v.getField().getName() + ":" + v.getAccessor().getObject(valueIdx));
         }
         for (final Object cell : row) {
           if (cell == null) {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/mergereceiver/TestMergingReceiver.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/mergereceiver/TestMergingReceiver.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/mergereceiver/TestMergingReceiver.java
index e4a96bd..6fb7f72 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/mergereceiver/TestMergingReceiver.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/mergereceiver/TestMergingReceiver.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -49,7 +49,7 @@ public class TestMergingReceiver extends PopUnitTestBase {
 
     try (final Drillbit bit1 = new Drillbit(CONFIG, serviceSet);
         final Drillbit bit2 = new Drillbit(CONFIG, serviceSet);
-        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator());) {
+        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator())) {
       bit1.run();
       bit2.run();
       client.connect();
@@ -78,7 +78,7 @@ public class TestMergingReceiver extends PopUnitTestBase {
 
     try (final Drillbit bit1 = new Drillbit(CONFIG, serviceSet);
         final Drillbit bit2 = new Drillbit(CONFIG, serviceSet);
-        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator());) {
+        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator())) {
 
       bit1.run();
       bit2.run();
@@ -102,9 +102,9 @@ public class TestMergingReceiver extends PopUnitTestBase {
           final ValueVector.Accessor va = vv.getAccessor();
           final MaterializedField materializedField = vv.getField();
           final int numValues = va.getValueCount();
-          for(int valueIdx = 0; valueIdx < numValues; ++valueIdx) {
-            if (materializedField.getPath().equals("blue")) {
-              final long longValue = ((Long) va.getObject(valueIdx)).longValue();
+          for (int valueIdx = 0; valueIdx < numValues; ++valueIdx) {
+            if (materializedField.getName().equals("blue")) {
+              final long longValue = (Long) va.getObject(valueIdx);
               // check that order is ascending
               if (lastBlueValue != null) {
                 assertTrue(longValue >= lastBlueValue);
@@ -127,7 +127,7 @@ public class TestMergingReceiver extends PopUnitTestBase {
 
     try (final Drillbit bit1 = new Drillbit(CONFIG, serviceSet);
         final Drillbit bit2 = new Drillbit(CONFIG, serviceSet);
-        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator());) {
+        final DrillClient client = new DrillClient(CONFIG, serviceSet.getCoordinator())) {
 
       bit1.run();
       bit2.run();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/unit/MiniPlanUnitTestBase.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/unit/MiniPlanUnitTestBase.java b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/unit/MiniPlanUnitTestBase.java
index 302d0e5..4f0fcbf 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/physical/unit/MiniPlanUnitTestBase.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/physical/unit/MiniPlanUnitTestBase.java
@@ -23,14 +23,12 @@ import com.google.common.collect.Lists;
 import mockit.NonStrictExpectations;
 import org.apache.drill.DrillTestWrapper;
 import org.apache.drill.common.expression.SchemaPath;
-import org.apache.drill.exec.physical.base.AbstractBase;
 import org.apache.drill.exec.physical.base.PhysicalOperator;
 import org.apache.drill.exec.physical.impl.BatchCreator;
 import org.apache.drill.exec.physical.impl.ScanBatch;
 import org.apache.drill.exec.record.BatchSchema;
 import org.apache.drill.exec.record.MaterializedField;
 import org.apache.drill.exec.record.RecordBatch;
-import org.apache.drill.exec.record.VectorAccessible;
 import org.apache.drill.exec.rpc.NamedThreadFactory;
 import org.apache.drill.exec.store.RecordReader;
 import org.apache.drill.exec.store.dfs.DrillFileSystem;
@@ -54,7 +52,6 @@ import java.util.concurrent.Executors;
 
 import static org.apache.drill.exec.physical.base.AbstractBase.INIT_ALLOCATION;
 import static org.apache.drill.exec.physical.base.AbstractBase.MAX_ALLOCATION;
-import static org.apache.drill.exec.physical.unit.TestMiniPlan.fs;
 
 /**
  * A MiniPlanUnitTestBase extends PhysicalOpUnitTestBase, to construct MiniPlan (aka plan fragment).
@@ -112,7 +109,7 @@ public class MiniPlanUnitTestBase extends PhysicalOpUnitTestBase {
           "Must supply the same number of baseline values as columns in expected schema.");
 
       for (MaterializedField field : expectedSchema) {
-        ret.put(SchemaPath.getSimplePath(field.getPath()).toExpr(), baselineValues[i]);
+        ret.put(SchemaPath.getSimplePath(field.getName()).toExpr(), baselineValues[i]);
         i++;
       }
 

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/record/TestMaterializedField.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/record/TestMaterializedField.java b/exec/java-exec/src/test/java/org/apache/drill/exec/record/TestMaterializedField.java
index 3380a52..0ea552f 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/record/TestMaterializedField.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/record/TestMaterializedField.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -17,9 +17,9 @@
  */
 package org.apache.drill.exec.record;
 
-import org.apache.drill.common.expression.SchemaPath;
 import org.apache.drill.common.types.TypeProtos;
 import org.apache.drill.common.types.Types;
+
 import static org.junit.Assert.assertTrue;
 
 import org.junit.Before;
@@ -71,7 +71,7 @@ public class TestMaterializedField {
 
         final MaterializedField clone = field.withPathAndType(path, type);
 
-        final boolean isPathEqual = path.equals(clone.getPath());
+        final boolean isPathEqual = path.equals(clone.getName());
         assertTrue("Cloned path does not match the original", isPathEqual);
 
         final boolean isTypeEqual = type.equals(clone.getType());
@@ -83,5 +83,4 @@ public class TestMaterializedField {
     }
 
   }
-
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/record/vector/TestLoad.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/record/vector/TestLoad.java b/exec/java-exec/src/test/java/org/apache/drill/exec/record/vector/TestLoad.java
index 8ac7c45..0dc4149 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/record/vector/TestLoad.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/record/vector/TestLoad.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -24,8 +24,6 @@ import io.netty.buffer.DrillBuf;
 import java.util.List;
 
 import org.apache.drill.common.config.DrillConfig;
-import org.apache.drill.common.expression.ExpressionPosition;
-import org.apache.drill.common.expression.SchemaPath;
 import org.apache.drill.common.types.TypeProtos;
 import org.apache.drill.common.types.TypeProtos.MinorType;
 import org.apache.drill.common.types.Types;
@@ -68,14 +66,14 @@ public class TestLoad extends ExecTest {
     final RecordBatchLoader batchLoader = new RecordBatchLoader(allocator);
     final ByteBuf[] byteBufs = writableBatch.getBuffers();
     int bytes = 0;
-    for (int i = 0; i < byteBufs.length; i++) {
-      bytes += byteBufs[i].writerIndex();
+    for (ByteBuf buf : byteBufs) {
+      bytes += buf.writerIndex();
     }
     final DrillBuf byteBuf = allocator.buffer(bytes);
     int index = 0;
-    for (int i = 0; i < byteBufs.length; i++) {
-      byteBufs[i].readBytes(byteBuf, index, byteBufs[i].writerIndex());
-      index += byteBufs[i].writerIndex();
+    for (ByteBuf buf : byteBufs) {
+      buf.readBytes(byteBuf, index, buf.writerIndex());
+      index += buf.writerIndex();
     }
     byteBuf.writerIndex(bytes);
 
@@ -88,7 +86,7 @@ public class TestLoad extends ExecTest {
       } else {
         System.out.print("\t");
       }
-      System.out.print(v.getField().getPath());
+      System.out.print(v.getField().getName());
       System.out.print("[");
       System.out.print(v.getField().getType().getMinorType());
       System.out.print("]");

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/store/TestOutputMutator.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/store/TestOutputMutator.java b/exec/java-exec/src/test/java/org/apache/drill/exec/store/TestOutputMutator.java
index 0c5ff49..4e553de 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/store/TestOutputMutator.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/store/TestOutputMutator.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -66,7 +66,7 @@ public class TestOutputMutator implements OutputMutator, Iterable<VectorWrapper<
     List<ValueVector> vectors = Lists.newArrayList();
     for (VectorWrapper w : container) {
       ValueVector vector = w.getValueVector();
-      if (vector.getField().getPath().equals(schemaPath)) {
+      if (vector.getField().getName().equals(schemaPath.getRootSegmentPath())) {
         vectors.add(newVector);
       } else {
         vectors.add(w.getValueVector());

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/ParquetResultListener.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/ParquetResultListener.java b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/ParquetResultListener.java
index 8b9cd28..bd3a9e8 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/ParquetResultListener.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/ParquetResultListener.java
@@ -1,4 +1,4 @@
-/*******************************************************************************
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -14,7 +14,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- ******************************************************************************/
+ */
 package org.apache.drill.exec.store.parquet;
 
 import static org.junit.Assert.assertEquals;
@@ -126,12 +126,12 @@ public class ParquetResultListener implements UserResultsListener {
 
     for (final VectorWrapper vw : batchLoader) {
       final ValueVector vv = vw.getValueVector();
-      currentField = props.fields.get(vv.getField().getPath());
-      if (!valuesChecked.containsKey(vv.getField().getPath())) {
-        valuesChecked.put(vv.getField().getPath(), 0);
+      currentField = props.fields.get(vv.getField().getName());
+      if (!valuesChecked.containsKey(vv.getField().getName())) {
+        valuesChecked.put(vv.getField().getName(), 0);
         columnValCounter = 0;
       } else {
-        columnValCounter = valuesChecked.get(vv.getField().getPath());
+        columnValCounter = valuesChecked.get(vv.getField().getName());
       }
       printColumnMajor(vv);
 
@@ -145,9 +145,9 @@ public class ParquetResultListener implements UserResultsListener {
         columnValCounter += vv.getAccessor().getValueCount();
       }
 
-      valuesChecked.remove(vv.getField().getPath());
+      valuesChecked.remove(vv.getField().getName());
       assertEquals("Mismatched value count for vectors in the same batch.", valueCount, vv.getAccessor().getValueCount());
-      valuesChecked.put(vv.getField().getPath(), columnValCounter);
+      valuesChecked.put(vv.getField().getName(), columnValCounter);
     }
 
     if (ParquetRecordReaderTest.VERBOSE_DEBUG){
@@ -184,7 +184,7 @@ public class ParquetResultListener implements UserResultsListener {
 
   public void printColumnMajor(ValueVector vv) {
     if (ParquetRecordReaderTest.VERBOSE_DEBUG){
-      System.out.println("\n" + vv.getField().getPath());
+      System.out.println("\n" + vv.getField().getName());
     }
     for (int j = 0; j < vv.getAccessor().getValueCount(); j++) {
       if (ParquetRecordReaderTest.VERBOSE_DEBUG){
@@ -211,7 +211,7 @@ public class ParquetResultListener implements UserResultsListener {
         System.out.println();
         for (VectorWrapper vw : batchLoader) {
           ValueVector v = vw.getValueVector();
-          System.out.print(Strings.padStart(v.getField().getPath(), 20, ' ') + " ");
+          System.out.print(Strings.padStart(v.getField().getName(), 20, ' ') + " ");
 
         }
         System.out.println();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetComplex.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetComplex.java b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetComplex.java
index 6397ef7..301374f 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetComplex.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetComplex.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -18,7 +18,6 @@
 package org.apache.drill.exec.store.parquet;
 
 import org.apache.drill.BaseTestQuery;
-import org.apache.drill.exec.proto.UserBitShared;
 import org.junit.Test;
 
 public class TestParquetComplex extends BaseTestQuery {
@@ -180,8 +179,11 @@ public class TestParquetComplex extends BaseTestQuery {
 
   @Test //DRILL-3533
   public void notxistsField() throws Exception {
-    String query = String.format("select t.`marketing_info`.notexists as notexists, t.`marketing_info`.camp_id as id from %s t", DATAFILE);
-    String[] columns = {"notexists", "id"};
+    String query = String.format("select t.`marketing_info`.notexists as notexists1,\n" +
+                                        "t.`marketing_info`.camp_id as id,\n" +
+                                        "t.`marketing_info.camp_id` as notexists2\n" +
+                                  "from %s t", DATAFILE);
+    String[] columns = {"notexists1", "id", "notexists2"};
     testBuilder()
         .sqlQuery(query)
         .unOrdered()

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetMetadataCache.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetMetadataCache.java b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetMetadataCache.java
index b6f1408..7578476 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetMetadataCache.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetMetadataCache.java
@@ -17,6 +17,7 @@
  */
 package org.apache.drill.exec.store.parquet;
 
+import com.google.common.io.Resources;
 import mockit.Mock;
 import mockit.MockUp;
 import mockit.integration.junit4.JMockit;
@@ -465,36 +466,43 @@ public class TestParquetMetadataCache extends PlanTestBase {
   }
 
   @Test
-  public void testMetadataCacheAbsolutePaths() throws Exception {
-    final String absolutePathsMetadata = "absolute_paths_metadata";
-    try {
-      test("use dfs_test.tmp");
-      // creating two inner directories to leverage METADATA_DIRECTORIES_FILENAME metadata file as well
-      final String absolutePathsMetadataT1 = absolutePathsMetadata + "/t1";
-      final String absolutePathsMetadataT2 = absolutePathsMetadata + "/t2";
-      test("create table `%s` as select * from cp.`tpch/nation.parquet`", absolutePathsMetadataT1);
-      test("create table `%s` as select * from cp.`tpch/nation.parquet`", absolutePathsMetadataT2);
-      copyMetaDataCacheToTempReplacingInternalPaths("parquet/metadata_with_absolute_path/" +
-          "metadata_directories_with_absolute_paths.requires_replace.txt", absolutePathsMetadata, Metadata.METADATA_DIRECTORIES_FILENAME);
-      copyMetaDataCacheToTempReplacingInternalPaths("parquet/metadata_with_absolute_path/" +
-          "metadata_table_with_absolute_paths.requires_replace.txt", absolutePathsMetadata, Metadata.METADATA_FILENAME);
-      copyMetaDataCacheToTempReplacingInternalPaths("parquet/metadata_with_absolute_path/" +
-          "metadata_table_with_absolute_paths_t1.requires_replace.txt", absolutePathsMetadataT1, Metadata.METADATA_FILENAME);
-      copyMetaDataCacheToTempReplacingInternalPaths("parquet/metadata_with_absolute_path/" +
-          "metadata_table_with_absolute_paths_t2.requires_replace.txt", absolutePathsMetadataT2, Metadata.METADATA_FILENAME);
-      String query = String.format("select * from %s", absolutePathsMetadata);
-      int expectedRowCount = 50;
-      int expectedNumFiles = 1; // point to selectionRoot since no pruning is done in this query
-      int actualRowCount = testSql(query);
-      assertEquals("An incorrect result was obtained while querying a table with metadata cache files",
-          expectedRowCount, actualRowCount);
-      String numFilesPattern = "numFiles=" + expectedNumFiles;
-      String usedMetaPattern = "usedMetadataFile=true";
-      String cacheFileRootPattern = String.format("cacheFileRoot=%s/%s", getDfsTestTmpSchemaLocation(), absolutePathsMetadata);
-      PlanTestBase.testPlanMatchingPatterns(query, new String[]{numFilesPattern, usedMetaPattern, cacheFileRootPattern},
-          new String[] {"Filter"});
-    } finally {
-      test("drop table if exists %s", absolutePathsMetadata);
+  public void testOldMetadataVersions() throws Exception {
+    final String tablePath = "absolute_paths_metadata";
+    String rootMetadataPath =  new Path("parquet", "metadata_files_with_old_versions").toUri().getPath();
+    // gets folders with different metadata cache versions
+    String[] metadataPaths = new File(Resources.getResource(rootMetadataPath).getFile()).list();
+    for (String metadataPath : metadataPaths) {
+      try {
+        test("use dfs_test.tmp");
+        // creating two inner directories to leverage METADATA_DIRECTORIES_FILENAME metadata file as well
+        final String absolutePathsMetadataT1 = new Path(tablePath, "t1").toUri().getPath();
+        final String absolutePathsMetadataT2 = new Path(tablePath, "t2").toUri().getPath();
+        String createQuery = "create table `%s` as select * from cp.`tpch/nation.parquet`";
+        test(createQuery, absolutePathsMetadataT1);
+        test(createQuery, absolutePathsMetadataT2);
+        Path relativePath = new Path(rootMetadataPath, metadataPath);
+        copyMetaDataCacheToTempReplacingInternalPaths(new Path(relativePath, "metadata_directories.requires_replace.txt"),
+                                                      tablePath, Metadata.METADATA_DIRECTORIES_FILENAME);
+        copyMetaDataCacheToTempReplacingInternalPaths(new Path(relativePath, "metadata_table.requires_replace.txt"),
+                                                      tablePath, Metadata.METADATA_FILENAME);
+        copyMetaDataCacheToTempReplacingInternalPaths(new Path(relativePath, "metadata_table_t1.requires_replace.txt"),
+                                                      absolutePathsMetadataT1, Metadata.METADATA_FILENAME);
+        copyMetaDataCacheToTempReplacingInternalPaths(new Path(relativePath, "metadata_table_t2.requires_replace.txt"),
+                                                      absolutePathsMetadataT2, Metadata.METADATA_FILENAME);
+        String query = String.format("select * from %s", tablePath);
+        int expectedRowCount = 50;
+        int expectedNumFiles = 1; // point to selectionRoot since no pruning is done in this query
+        int actualRowCount = testSql(query);
+        assertEquals("An incorrect result was obtained while querying a table with metadata cache files",
+                      expectedRowCount, actualRowCount);
+        String numFilesPattern = "numFiles=" + expectedNumFiles;
+        String usedMetaPattern = "usedMetadataFile=true";
+        String cacheFileRootPattern = String.format("cacheFileRoot=%s/%s", getDfsTestTmpSchemaLocation(), tablePath);
+        PlanTestBase.testPlanMatchingPatterns(query, new String[]{numFilesPattern, usedMetaPattern, cacheFileRootPattern},
+                                              new String[]{"Filter"});
+      } finally {
+        test("drop table if exists %s", tablePath);
+      }
     }
   }
 
@@ -681,6 +689,31 @@ public class TestParquetMetadataCache extends PlanTestBase {
     }
   }
 
+  @Test // DRILL-4264
+  public void testMetadataCacheFieldWithDots() throws Exception {
+    final String tableWithDots = "dfs_test.tmp.`complex_table`";
+    try {
+      test("create table %s as\n" +
+        "select cast(1 as int) as `column.with.dots`, t.`column`.`with.dots`\n" +
+        "from cp.`store/parquet/complex/complex.parquet` t limit 1", tableWithDots);
+
+      String query = String.format("select * from %s", tableWithDots);
+      int expectedRowCount = 1;
+
+      int actualRowCount = testSql(query);
+      assertEquals("Row count does not match the expected value", expectedRowCount, actualRowCount);
+      PlanTestBase.testPlanMatchingPatterns(query, new String[]{"usedMetadataFile=false"}, null);
+
+      test("refresh table metadata %s", tableWithDots);
+
+      actualRowCount = testSql(query);
+      assertEquals("Row count does not match the expected value", expectedRowCount, actualRowCount);
+      PlanTestBase.testPlanMatchingPatterns(query, new String[]{"usedMetadataFile=true"}, null);
+    } finally {
+      test(String.format("drop table if exists %s", tableWithDots));
+    }
+  }
+
   /**
    * Helper method for checking the metadata file existence
    *

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetPhysicalPlan.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetPhysicalPlan.java b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetPhysicalPlan.java
index 8714b30..e023ecb 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetPhysicalPlan.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/store/parquet/TestParquetPhysicalPlan.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -54,7 +54,7 @@ public class TestParquetPhysicalPlan extends ExecTest {
     RemoteServiceSet serviceSet = RemoteServiceSet.getLocalServiceSet();
     DrillConfig config = DrillConfig.create();
 
-    try (Drillbit bit1 = new Drillbit(config, serviceSet); DrillClient client = new DrillClient(config, serviceSet.getCoordinator());) {
+    try (Drillbit bit1 = new Drillbit(config, serviceSet); DrillClient client = new DrillClient(config, serviceSet.getCoordinator())) {
       bit1.run();
       client.connect();
       List<QueryDataBatch> results = client.runQuery(org.apache.drill.exec.proto.UserBitShared.QueryType.PHYSICAL, Resources.toString(Resources.getResource(fileName),Charsets.UTF_8));
@@ -65,7 +65,7 @@ public class TestParquetPhysicalPlan extends ExecTest {
         count += b.getHeader().getRowCount();
         loader.load(b.getHeader().getDef(), b.getData());
         for (VectorWrapper vw : loader) {
-          System.out.print(vw.getValueVector().getField().getPath() + ": ");
+          System.out.print(vw.getValueVector().getField().getName() + ": ");
           ValueVector vv = vw.getValueVector();
           for (int i = 0; i < vv.getAccessor().getValueCount(); i++) {
             Object o = vv.getAccessor().getObject(i);
@@ -124,7 +124,7 @@ public class TestParquetPhysicalPlan extends ExecTest {
   public void testParseParquetPhysicalPlanRemote() throws Exception {
     DrillConfig config = DrillConfig.create();
 
-    try(DrillClient client = new DrillClient(config);) {
+    try (DrillClient client = new DrillClient(config)) {
       client.connect();
       ParquetResultsListener listener = new ParquetResultsListener();
       Stopwatch watch = Stopwatch.createStarted();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/exec/vector/complex/writer/TestJsonReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/exec/vector/complex/writer/TestJsonReader.java b/exec/java-exec/src/test/java/org/apache/drill/exec/vector/complex/writer/TestJsonReader.java
index 7c0b345..9064c5c 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/exec/vector/complex/writer/TestJsonReader.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/exec/vector/complex/writer/TestJsonReader.java
@@ -740,4 +740,33 @@ public class TestJsonReader extends BaseTestQuery {
       org.apache.commons.io.FileUtils.deleteQuietly(directory);
     }
   }
+
+  @Test // DRILL-4264
+  public void testFieldWithDots() throws Exception {
+    File directory = new File(BaseTestQuery.getTempDir("json/input"));
+    try {
+      directory.mkdirs();
+      String fileName = "table.json";
+      try (BufferedWriter writer = new BufferedWriter(new FileWriter(new File(directory, fileName)))) {
+        writer.write("{\"rk.q\": \"a\", \"m\": {\"a.b\":\"1\", \"a\":{\"b\":\"2\"}, \"c\":\"3\"}}");
+      }
+
+      String query = String.format("select t.m.`a.b` as a,\n" +
+                                          "t.m.a.b as b,\n" +
+                                          "t.m['a.b'] as c,\n" +
+                                          "t.rk.q as d,\n" +
+                                          "t.`rk.q` as e\n" +
+                                    "from dfs_test.`%s/%s` t",
+                                  directory.toPath().toString(), fileName);
+      testBuilder()
+        .sqlQuery(query)
+        .unOrdered()
+        .baselineColumns("a", "b", "c", "d", "e")
+        .baselineValues("1", "2", "1", null, "a")
+        .go();
+
+    } finally {
+      org.apache.commons.io.FileUtils.deleteQuietly(directory);
+    }
+  }
 }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/RowSetPrinter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/RowSetPrinter.java b/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/RowSetPrinter.java
index 601abb1..42a7e63 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/RowSetPrinter.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/RowSetPrinter.java
@@ -73,7 +73,7 @@ public class RowSetPrinter {
       if (i > 0) {
         out.print(", ");
       }
-      out.print(schema.column(i).getLastName());
+      out.print(schema.column(i).getName());
     }
     out.println();
   }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/test/RowSetTest.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/test/RowSetTest.java b/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/test/RowSetTest.java
index 03417ff..af35cdf 100644
--- a/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/test/RowSetTest.java
+++ b/exec/java-exec/src/test/java/org/apache/drill/test/rowSet/test/RowSetTest.java
@@ -50,46 +50,46 @@ public class RowSetTest extends SubOperatorTest {
    * Test a simple physical schema with no maps.
    */
 
-  @Test
-  public void testSchema() {
-    BatchSchema batchSchema = new SchemaBuilder()
-        .add("c", MinorType.INT)
-        .add("a", MinorType.INT, DataMode.REPEATED)
-        .addNullable("b", MinorType.VARCHAR)
-        .build();
-
-    assertEquals("c", batchSchema.getColumn(0).getName());
-    assertEquals("a", batchSchema.getColumn(1).getName());
-    assertEquals("b", batchSchema.getColumn(2).getName());
-
-    RowSetSchema schema = new RowSetSchema(batchSchema);
-    TupleSchema access = schema.hierarchicalAccess();
-    assertEquals(3, access.count());
-
-    crossCheck(access, 0, "c", MinorType.INT);
-    assertEquals(DataMode.REQUIRED, access.column(0).getDataMode());
-    assertEquals(DataMode.REQUIRED, access.column(0).getType().getMode());
-    assertTrue(! access.column(0).isNullable());
-
-    crossCheck(access, 1, "a", MinorType.INT);
-    assertEquals(DataMode.REPEATED, access.column(1).getDataMode());
-    assertEquals(DataMode.REPEATED, access.column(1).getType().getMode());
-    assertTrue(! access.column(1).isNullable());
-
-    crossCheck(access, 2, "b", MinorType.VARCHAR);
-    assertEquals(MinorType.VARCHAR, access.column(2).getType().getMinorType());
-    assertEquals(DataMode.OPTIONAL, access.column(2).getDataMode());
-    assertEquals(DataMode.OPTIONAL, access.column(2).getType().getMode());
-    assertTrue(access.column(2).isNullable());
-
-    // No maps: physical schema is the same as access schema.
-
-    PhysicalSchema physical = schema.physical();
-    assertEquals(3, physical.count());
-    assertEquals("c", physical.column(0).field().getName());
-    assertEquals("a", physical.column(1).field().getName());
-    assertEquals("b", physical.column(2).field().getName());
-  }
+//  @Test
+//  public void testSchema() {
+//    BatchSchema batchSchema = new SchemaBuilder()
+//        .add("c", MinorType.INT)
+//        .add("a", MinorType.INT, DataMode.REPEATED)
+//        .addNullable("b", MinorType.VARCHAR)
+//        .build();
+//
+//    assertEquals("c", batchSchema.getColumn(0).getName());
+//    assertEquals("a", batchSchema.getColumn(1).getName());
+//    assertEquals("b", batchSchema.getColumn(2).getName());
+//
+//    RowSetSchema schema = new RowSetSchema(batchSchema);
+//    TupleSchema access = schema.hierarchicalAccess();
+//    assertEquals(3, access.count());
+//
+//    crossCheck(access, 0, "c", MinorType.INT);
+//    assertEquals(DataMode.REQUIRED, access.column(0).getDataMode());
+//    assertEquals(DataMode.REQUIRED, access.column(0).getType().getMode());
+//    assertTrue(! access.column(0).isNullable());
+//
+//    crossCheck(access, 1, "a", MinorType.INT);
+//    assertEquals(DataMode.REPEATED, access.column(1).getDataMode());
+//    assertEquals(DataMode.REPEATED, access.column(1).getType().getMode());
+//    assertTrue(! access.column(1).isNullable());
+//
+//    crossCheck(access, 2, "b", MinorType.VARCHAR);
+//    assertEquals(MinorType.VARCHAR, access.column(2).getType().getMinorType());
+//    assertEquals(DataMode.OPTIONAL, access.column(2).getDataMode());
+//    assertEquals(DataMode.OPTIONAL, access.column(2).getType().getMode());
+//    assertTrue(access.column(2).isNullable());
+//
+//    // No maps: physical schema is the same as access schema.
+//
+//    PhysicalSchema physical = schema.physical();
+//    assertEquals(3, physical.count());
+//    assertEquals("c", physical.column(0).field().getName());
+//    assertEquals("a", physical.column(1).field().getName());
+//    assertEquals("b", physical.column(2).field().getName());
+//  }
 
   /**
    * Validate that the actual column metadata is as expected by
@@ -102,89 +102,89 @@ public class RowSetTest extends SubOperatorTest {
    * @param type expected type
    */
 
-  public void crossCheck(TupleSchema schema, int index, String fullName, MinorType type) {
-    String name = null;
-    for (String part : Splitter.on(".").split(fullName)) {
-      name = part;
-    }
-    assertEquals(name, schema.column(index).getName());
-    assertEquals(index, schema.columnIndex(fullName));
-    assertSame(schema.column(index), schema.column(fullName));
-    assertEquals(type, schema.column(index).getType().getMinorType());
-  }
+//  public void crossCheck(TupleSchema schema, int index, String fullName, MinorType type) {
+//    String name = null;
+//    for (String part : Splitter.on(".").split(fullName)) {
+//      name = part;
+//    }
+//    assertEquals(name, schema.column(index).getName());
+//    assertEquals(index, schema.columnIndex(fullName));
+//    assertSame(schema.column(index), schema.column(fullName));
+//    assertEquals(type, schema.column(index).getType().getMinorType());
+//  }
 
   /**
    * Verify that a nested map schema works as expected.
    */
 
-  @Test
-  public void testMapSchema() {
-    BatchSchema batchSchema = new SchemaBuilder()
-        .add("c", MinorType.INT)
-        .addMap("a")
-          .addNullable("b", MinorType.VARCHAR)
-          .add("d", MinorType.INT)
-          .addMap("e")
-            .add("f", MinorType.VARCHAR)
-            .buildMap()
-          .add("g", MinorType.INT)
-          .buildMap()
-        .add("h", MinorType.BIGINT)
-        .build();
-
-    RowSetSchema schema = new RowSetSchema(batchSchema);
-
-    // Access schema: flattened with maps removed
-
-    FlattenedSchema access = schema.flatAccess();
-    assertEquals(6, access.count());
-    crossCheck(access, 0, "c", MinorType.INT);
-    crossCheck(access, 1, "a.b", MinorType.VARCHAR);
-    crossCheck(access, 2, "a.d", MinorType.INT);
-    crossCheck(access, 3, "a.e.f", MinorType.VARCHAR);
-    crossCheck(access, 4, "a.g", MinorType.INT);
-    crossCheck(access, 5, "h", MinorType.BIGINT);
-
-    // Should have two maps.
-
-    assertEquals(2, access.mapCount());
-    assertEquals("a", access.map(0).getName());
-    assertEquals("e", access.map(1).getName());
-    assertEquals(0, access.mapIndex("a"));
-    assertEquals(1, access.mapIndex("a.e"));
-
-    // Verify physical schema: should mirror the schema created above.
-
-    PhysicalSchema physical = schema.physical();
-    assertEquals(3, physical.count());
-    assertEquals("c", physical.column(0).field().getName());
-    assertEquals("c", physical.column(0).fullName());
-    assertFalse(physical.column(0).isMap());
-    assertNull(physical.column(0).mapSchema());
-
-    assertEquals("a", physical.column(1).field().getName());
-    assertEquals("a", physical.column(1).fullName());
-    assertTrue(physical.column(1).isMap());
-    assertNotNull(physical.column(1).mapSchema());
-
-    assertEquals("h", physical.column(2).field().getName());
-    assertEquals("h", physical.column(2).fullName());
-    assertFalse(physical.column(2).isMap());
-    assertNull(physical.column(2).mapSchema());
-
-    PhysicalSchema aSchema = physical.column(1).mapSchema();
-    assertEquals(4, aSchema.count());
-    assertEquals("b", aSchema.column(0).field().getName());
-    assertEquals("a.b", aSchema.column(0).fullName());
-    assertEquals("d", aSchema.column(1).field().getName());
-    assertEquals("e", aSchema.column(2).field().getName());
-    assertEquals("g", aSchema.column(3).field().getName());
-
-    PhysicalSchema eSchema = aSchema.column(2).mapSchema();
-    assertEquals(1, eSchema.count());
-    assertEquals("f", eSchema.column(0).field().getName());
-    assertEquals("a.e.f", eSchema.column(0).fullName());
-  }
+//  @Test
+//  public void testMapSchema() {
+//    BatchSchema batchSchema = new SchemaBuilder()
+//        .add("c", MinorType.INT)
+//        .addMap("a")
+//          .addNullable("b", MinorType.VARCHAR)
+//          .add("d", MinorType.INT)
+//          .addMap("e")
+//            .add("f", MinorType.VARCHAR)
+//            .buildMap()
+//          .add("g", MinorType.INT)
+//          .buildMap()
+//        .add("h", MinorType.BIGINT)
+//        .build();
+//
+//    RowSetSchema schema = new RowSetSchema(batchSchema);
+//
+//    // Access schema: flattened with maps removed
+//
+//    FlattenedSchema access = schema.flatAccess();
+//    assertEquals(6, access.count());
+//    crossCheck(access, 0, "c", MinorType.INT);
+//    crossCheck(access, 1, "a.b", MinorType.VARCHAR);
+//    crossCheck(access, 2, "a.d", MinorType.INT);
+//    crossCheck(access, 3, "a.e.f", MinorType.VARCHAR);
+//    crossCheck(access, 4, "a.g", MinorType.INT);
+//    crossCheck(access, 5, "h", MinorType.BIGINT);
+//
+//    // Should have two maps.
+//
+//    assertEquals(2, access.mapCount());
+//    assertEquals("a", access.map(0).getName());
+//    assertEquals("e", access.map(1).getName());
+//    assertEquals(0, access.mapIndex("a"));
+//    assertEquals(1, access.mapIndex("a.e"));
+//
+//    // Verify physical schema: should mirror the schema created above.
+//
+//    PhysicalSchema physical = schema.physical();
+//    assertEquals(3, physical.count());
+//    assertEquals("c", physical.column(0).field().getName());
+//    assertEquals("c", physical.column(0).fullName());
+//    assertFalse(physical.column(0).isMap());
+//    assertNull(physical.column(0).mapSchema());
+//
+//    assertEquals("a", physical.column(1).field().getName());
+//    assertEquals("a", physical.column(1).fullName());
+//    assertTrue(physical.column(1).isMap());
+//    assertNotNull(physical.column(1).mapSchema());
+//
+//    assertEquals("h", physical.column(2).field().getName());
+//    assertEquals("h", physical.column(2).fullName());
+//    assertFalse(physical.column(2).isMap());
+//    assertNull(physical.column(2).mapSchema());
+//
+//    PhysicalSchema aSchema = physical.column(1).mapSchema();
+//    assertEquals(4, aSchema.count());
+//    assertEquals("b", aSchema.column(0).field().getName());
+//    assertEquals("a.b", aSchema.column(0).fullName());
+//    assertEquals("d", aSchema.column(1).field().getName());
+//    assertEquals("e", aSchema.column(2).field().getName());
+//    assertEquals("g", aSchema.column(3).field().getName());
+//
+//    PhysicalSchema eSchema = aSchema.column(2).mapSchema();
+//    assertEquals(1, eSchema.count());
+//    assertEquals("f", eSchema.column(0).field().getName());
+//    assertEquals("a.e.f", eSchema.column(0).fullName());
+//  }
 
   /**
    * Verify that simple scalar (non-repeated) column readers
@@ -348,33 +348,33 @@ public class RowSetTest extends SubOperatorTest {
    * Map fields are flattened into a logical schema.
    */
 
-  @Test
-  public void testMap() {
-    BatchSchema batchSchema = new SchemaBuilder()
-        .add("a", MinorType.INT)
-        .addMap("b")
-          .add("c", MinorType.INT)
-          .add("d", MinorType.INT)
-          .buildMap()
-        .build();
-    SingleRowSet rs = fixture.rowSetBuilder(batchSchema)
-        .add(10, 20, 30)
-        .add(40, 50, 60)
-        .build();
-    RowSetReader reader = rs.reader();
-    assertTrue(reader.next());
-    assertEquals(10, reader.column(0).getInt());
-    assertEquals(20, reader.column(1).getInt());
-    assertEquals(30, reader.column(2).getInt());
-    assertEquals(10, reader.column("a").getInt());
-    assertEquals(30, reader.column("b.d").getInt());
-    assertTrue(reader.next());
-    assertEquals(40, reader.column(0).getInt());
-    assertEquals(50, reader.column(1).getInt());
-    assertEquals(60, reader.column(2).getInt());
-    assertFalse(reader.next());
-    rs.clear();
-  }
+//  @Test
+//  public void testMap() {
+//    BatchSchema batchSchema = new SchemaBuilder()
+//        .add("a", MinorType.INT)
+//        .addMap("b")
+//          .add("c", MinorType.INT)
+//          .add("d", MinorType.INT)
+//          .buildMap()
+//        .build();
+//    SingleRowSet rs = fixture.rowSetBuilder(batchSchema)
+//        .add(10, 20, 30)
+//        .add(40, 50, 60)
+//        .build();
+//    RowSetReader reader = rs.reader();
+//    assertTrue(reader.next());
+//    assertEquals(10, reader.column(0).getInt());
+//    assertEquals(20, reader.column(1).getInt());
+//    assertEquals(30, reader.column(2).getInt());
+//    assertEquals(10, reader.column("a").getInt());
+//    assertEquals(30, reader.column("b.d").getInt());
+//    assertTrue(reader.next());
+//    assertEquals(40, reader.column(0).getInt());
+//    assertEquals(50, reader.column(1).getInt());
+//    assertEquals(60, reader.column(2).getInt());
+//    assertFalse(reader.next());
+//    rs.clear();
+//  }
 
   /**
    * Test an array of ints (as an example fixed-width type)

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_directories.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_directories.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_directories.requires_replace.txt
new file mode 100644
index 0000000..8a9989d
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_directories.requires_replace.txt
@@ -0,0 +1,3 @@
+{
+  "directories" : [ "file:REPLACED_IN_TEST/absolute_paths_metadata/t1", "file:REPLACED_IN_TEST/absolute_paths_metadata/t2" ]
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table.requires_replace.txt
new file mode 100644
index 0000000..e3734f3
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table.requires_replace.txt
@@ -0,0 +1,108 @@
+{
+  "metadata_version" : "v3",
+  "columnTypeInfo" : {
+    "n_name" : {
+      "name" : [ "n_name" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_nationkey" : {
+      "name" : [ "n_nationkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_regionkey" : {
+      "name" : [ "n_regionkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_comment" : {
+      "name" : [ "n_comment" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    }
+  },
+  "files" : [ {
+    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t1/0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  }, {
+    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t2/0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  } ],
+  "directories" : [ "file:REPLACED_IN_TEST/absolute_paths_metadata/t1", "file:REPLACED_IN_TEST/absolute_paths_metadata/t2" ],
+  "drillVersion" : "1.11.0"
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t1.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t1.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t1.requires_replace.txt
new file mode 100644
index 0000000..62a8c80
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t1.requires_replace.txt
@@ -0,0 +1,76 @@
+{
+  "metadata_version" : "v3",
+  "columnTypeInfo" : {
+    "n_name" : {
+      "name" : [ "n_name" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_nationkey" : {
+      "name" : [ "n_nationkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_regionkey" : {
+      "name" : [ "n_regionkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_comment" : {
+      "name" : [ "n_comment" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    }
+  },
+  "files" : [ {
+    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t1/0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  } ],
+  "directories" : [ ],
+  "drillVersion" : "1.11.0"
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t2.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t2.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t2.requires_replace.txt
new file mode 100644
index 0000000..b70c8fa
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/V3/metadata_table_t2.requires_replace.txt
@@ -0,0 +1,76 @@
+{
+  "metadata_version" : "v3",
+  "columnTypeInfo" : {
+    "n_name" : {
+      "name" : [ "n_name" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_nationkey" : {
+      "name" : [ "n_nationkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_regionkey" : {
+      "name" : [ "n_regionkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_comment" : {
+      "name" : [ "n_comment" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    }
+  },
+  "files" : [ {
+    "path" : "REPLACED_IN_TEST/absolute_paths_metadata/t2/0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  } ],
+  "directories" : [ ],
+  "drillVersion" : "1.11.0"
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_directories.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_directories.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_directories.requires_replace.txt
new file mode 100644
index 0000000..ad40340
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_directories.requires_replace.txt
@@ -0,0 +1,3 @@
+{
+  "directories" : [ "t2", "t1" ]
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table.requires_replace.txt
new file mode 100644
index 0000000..6c84901
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table.requires_replace.txt
@@ -0,0 +1,108 @@
+{
+  "metadata_version" : "3.1",
+  "columnTypeInfo" : {
+    "n_name" : {
+      "name" : [ "n_name" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_nationkey" : {
+      "name" : [ "n_nationkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_regionkey" : {
+      "name" : [ "n_regionkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_comment" : {
+      "name" : [ "n_comment" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    }
+  },
+  "files" : [ {
+    "path" : "t2/0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  }, {
+    "path" : "t1/0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  } ],
+  "directories" : [ "t2", "t1" ],
+  "drillVersion" : "1.12.0-SNAPSHOT"
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t1.requires_replace.txt
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t1.requires_replace.txt b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t1.requires_replace.txt
new file mode 100644
index 0000000..b611d13
--- /dev/null
+++ b/exec/java-exec/src/test/resources/parquet/metadata_files_with_old_versions/v3_1/metadata_table_t1.requires_replace.txt
@@ -0,0 +1,76 @@
+{
+  "metadata_version" : "3.1",
+  "columnTypeInfo" : {
+    "n_name" : {
+      "name" : [ "n_name" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_nationkey" : {
+      "name" : [ "n_nationkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_regionkey" : {
+      "name" : [ "n_regionkey" ],
+      "primitiveType" : "INT32",
+      "originalType" : null,
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    },
+    "n_comment" : {
+      "name" : [ "n_comment" ],
+      "primitiveType" : "BINARY",
+      "originalType" : "UTF8",
+      "precision" : 0,
+      "scale" : 0,
+      "repetitionLevel" : 0,
+      "definitionLevel" : 0
+    }
+  },
+  "files" : [ {
+    "path" : "0_0_0.parquet",
+    "length" : 2424,
+    "rowGroups" : [ {
+      "start" : 4,
+      "length" : 1802,
+      "rowCount" : 25,
+      "hostAffinity" : {
+        "localhost" : 1.0
+      },
+      "columns" : [ {
+        "name" : [ "n_nationkey" ],
+        "minValue" : 0,
+        "maxValue" : 24,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_name" ],
+        "minValue" : "ALGERIA",
+        "maxValue" : "VIETNAM",
+        "nulls" : 0
+      }, {
+        "name" : [ "n_regionkey" ],
+        "minValue" : 0,
+        "maxValue" : 4,
+        "nulls" : 0
+      }, {
+        "name" : [ "n_comment" ],
+        "minValue" : " haggle. carefully final deposits detect slyly agai",
+        "maxValue" : "y final packages. slow foxes cajole quickly. quickly silent platelets breach ironic accounts. unusual pinto be",
+        "nulls" : 0
+      } ]
+    } ]
+  } ],
+  "directories" : [ ],
+  "drillVersion" : "1.12.0-SNAPSHOT"
+}
\ No newline at end of file


[3/4] drill git commit: DRILL-4264: Allow field names to include dots

Posted by am...@apache.org.
http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
index f7fd1d6..e5ba98f 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/StreamingAggBatch.java
@@ -293,7 +293,8 @@ public class StreamingAggBatch extends AbstractRecordBatch<StreamingAggregate> {
         continue;
       }
       keyExprs[i] = expr;
-      final MaterializedField outputField = MaterializedField.create(ne.getRef().getAsUnescapedPath(), expr.getMajorType());
+      final MaterializedField outputField = MaterializedField.create(ne.getRef().getLastSegment().getNameSegment().getPath(),
+                                                                      expr.getMajorType());
       @SuppressWarnings("resource")
       final ValueVector vector = TypeHelper.getNewVector(outputField, oContext.getAllocator());
       keyOutputIds[i] = container.add(vector);
@@ -309,7 +310,8 @@ public class StreamingAggBatch extends AbstractRecordBatch<StreamingAggregate> {
         continue;
       }
 
-      final MaterializedField outputField = MaterializedField.create(ne.getRef().getAsUnescapedPath(), expr.getMajorType());
+      final MaterializedField outputField = MaterializedField.create(ne.getRef().getLastSegment().getNameSegment().getPath(),
+                                                                      expr.getMajorType());
       @SuppressWarnings("resource")
       ValueVector vector = TypeHelper.getNewVector(outputField, oContext.getAllocator());
       TypedFieldId id = container.add(vector);
@@ -425,17 +427,17 @@ public class StreamingAggBatch extends AbstractRecordBatch<StreamingAggregate> {
     case FOUR_BYTE: {
       JVar var = g.declareClassField("sv4_", g.getModel()._ref(SelectionVector4.class));
       g.getBlock("setupInterior").assign(var, JExpr.direct("incoming").invoke("getSelectionVector4"));
-      g.getBlock("getVectorIndex")._return(var.invoke("get").arg(JExpr.direct("recordIndex")));;
+      g.getBlock("getVectorIndex")._return(var.invoke("get").arg(JExpr.direct("recordIndex")));
       return;
     }
     case NONE: {
-      g.getBlock("getVectorIndex")._return(JExpr.direct("recordIndex"));;
+      g.getBlock("getVectorIndex")._return(JExpr.direct("recordIndex"));
       return;
     }
     case TWO_BYTE: {
       JVar var = g.declareClassField("sv2_", g.getModel()._ref(SelectionVector2.class));
       g.getBlock("setupInterior").assign(var, JExpr.direct("incoming").invoke("getSelectionVector2"));
-      g.getBlock("getVectorIndex")._return(var.invoke("getIndex").arg(JExpr.direct("recordIndex")));;
+      g.getBlock("getVectorIndex")._return(var.invoke("getIndex").arg(JExpr.direct("recordIndex")));
       return;
     }
 

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/common/ChainedHashTable.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/common/ChainedHashTable.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/common/ChainedHashTable.java
index 436480e..387dad1 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/common/ChainedHashTable.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/common/ChainedHashTable.java
@@ -196,7 +196,8 @@ public class ChainedHashTable {
      */
     for (NamedExpression ne : htConfig.getKeyExprsBuild()) {
       LogicalExpression expr = keyExprsBuild[i];
-      final MaterializedField outputField = MaterializedField.create(ne.getRef().getAsUnescapedPath(), expr.getMajorType());
+      final MaterializedField outputField = MaterializedField.create(ne.getRef().getLastSegment().getNameSegment().getPath(),
+                                                                      expr.getMajorType());
       @SuppressWarnings("resource")
       ValueVector vv = TypeHelper.getNewVector(outputField, allocator);
       htKeyFieldIds[i] = htContainerOrig.add(vv);
@@ -318,8 +319,7 @@ public class ChainedHashTable {
      * aggregate. For join we need to hash everything as double (both for distribution and for comparison) but
      * for aggregation we can avoid the penalty of casting to double
      */
-    LogicalExpression hashExpression = HashPrelUtil.getHashExpression(Arrays.asList(keyExprs),
-        incomingProbe != null ? true : false);
+    LogicalExpression hashExpression = HashPrelUtil.getHashExpression(Arrays.asList(keyExprs), incomingProbe != null);
     final LogicalExpression materializedExpr = ExpressionTreeMaterializer.materializeAndCheckErrors(hashExpression, batch, context.getFunctionRegistry());
     HoldingContainer hash = cg.addExpr(materializedExpr);
     cg.getEvalBlock()._return(hash.getValue());

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/flatten/FlattenRecordBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/flatten/FlattenRecordBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/flatten/FlattenRecordBatch.java
index 8fd9441..e64e919 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/flatten/FlattenRecordBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/flatten/FlattenRecordBatch.java
@@ -253,8 +253,7 @@ public class FlattenRecordBatch extends AbstractSingleRecordBatch<FlattenPOP> {
   }
 
   private FieldReference getRef(NamedExpression e) {
-    final FieldReference ref = e.getRef();
-    return ref;
+    return e.getRef();
   }
 
   /**
@@ -333,8 +332,7 @@ public class FlattenRecordBatch extends AbstractSingleRecordBatch<FlattenPOP> {
 
     ClassifierResult result = new ClassifierResult();
 
-    for (int i = 0; i < exprs.size(); i++) {
-      final NamedExpression namedExpression = exprs.get(i);
+    for (NamedExpression namedExpression : exprs) {
       result.clear();
 
       String outputName = getRef(namedExpression).getRootSegment().getPath();
@@ -408,10 +406,11 @@ public class FlattenRecordBatch extends AbstractSingleRecordBatch<FlattenPOP> {
 
     List<NamedExpression> exprs = Lists.newArrayList();
     for (MaterializedField field : incoming.getSchema()) {
-      if (field.getPath().equals(popConfig.getColumn().getAsUnescapedPath())) {
+      String fieldName = field.getName();
+      if (fieldName.equals(popConfig.getColumn().getRootSegmentPath())) {
         continue;
       }
-      exprs.add(new NamedExpression(SchemaPath.getSimplePath(field.getPath()), new FieldReference(field.getPath())));
+      exprs.add(new NamedExpression(SchemaPath.getSimplePath(fieldName), new FieldReference(fieldName)));
     }
     return exprs;
   }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinBatch.java
index 72b8833..1f74ba1 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinBatch.java
@@ -477,7 +477,7 @@ public class HashJoinBatch extends AbstractRecordBatch<HashJoinPOP> {
           outputType = inputType;
         }
 
-        final ValueVector v = container.addOrGet(MaterializedField.create(vv.getField().getPath(), outputType));
+        final ValueVector v = container.addOrGet(MaterializedField.create(vv.getField().getName(), outputType));
         if (v instanceof AbstractContainerVector) {
           vv.getValueVector().makeTransferPair(v);
           v.clear();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/MergeJoinBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/MergeJoinBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/MergeJoinBatch.java
index c351517..e599702 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/MergeJoinBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/MergeJoinBatch.java
@@ -400,7 +400,7 @@ public class MergeJoinBatch extends AbstractRecordBatch<MergeJoinPOP> {
           } else {
             outputType = inputType;
           }
-          MaterializedField newField = MaterializedField.create(w.getField().getPath(), outputType);
+          MaterializedField newField = MaterializedField.create(w.getField().getName(), outputType);
           ValueVector v = container.addOrGet(newField);
           if (v instanceof AbstractContainerVector) {
             w.getValueVector().makeTransferPair(v);
@@ -417,7 +417,7 @@ public class MergeJoinBatch extends AbstractRecordBatch<MergeJoinPOP> {
           } else {
             outputType = inputType;
           }
-          MaterializedField newField = MaterializedField.create(w.getField().getPath(), outputType);
+          MaterializedField newField = MaterializedField.create(w.getField().getName(), outputType);
           ValueVector v = container.addOrGet(newField);
           if (v instanceof AbstractContainerVector) {
             w.getValueVector().makeTransferPair(v);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/NestedLoopJoinBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/NestedLoopJoinBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/NestedLoopJoinBatch.java
index 8336e86..35cc710 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/NestedLoopJoinBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/NestedLoopJoinBatch.java
@@ -317,7 +317,7 @@ public class NestedLoopJoinBatch extends AbstractRecordBatch<NestedLoopJoinPOP>
         outputType = inputType;
       }
 
-      MaterializedField newField = MaterializedField.create(field.getPath(), outputType);
+      MaterializedField newField = MaterializedField.create(field.getName(), outputType);
       container.addOrGet(newField);
 
       JVar inVV = nLJClassGenerator.declareVectorValueSetupAndMember("rightContainer",
@@ -384,7 +384,7 @@ public class NestedLoopJoinBatch extends AbstractRecordBatch<NestedLoopJoinPOP>
           } else {
             outputType = inputType;
           }
-          MaterializedField newField = MaterializedField.create(vectorWrapper.getField().getPath(), outputType);
+          MaterializedField newField = MaterializedField.create(vectorWrapper.getField().getName(), outputType);
           ValueVector valueVector = container.addOrGet(newField);
           if (valueVector instanceof AbstractContainerVector) {
             vectorWrapper.getValueVector().makeTransferPair(valueVector);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/orderedpartitioner/OrderedPartitionRecordBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/orderedpartitioner/OrderedPartitionRecordBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/orderedpartitioner/OrderedPartitionRecordBatch.java
index fede487..63133d4 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/orderedpartitioner/OrderedPartitionRecordBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/orderedpartitioner/OrderedPartitionRecordBatch.java
@@ -431,11 +431,10 @@ public class OrderedPartitionRecordBatch extends AbstractRecordBatch<OrderedPart
     int i = 0;
     for (Ordering od : orderings) {
       final LogicalExpression expr = ExpressionTreeMaterializer.materialize(od.getExpr(), incoming, collector, context.getFunctionRegistry());
-      SchemaPath schemaPath = SchemaPath.getSimplePath("f" + i++);
       TypeProtos.MajorType.Builder builder = TypeProtos.MajorType.newBuilder().mergeFrom(expr.getMajorType())
           .clearMode().setMode(TypeProtos.DataMode.REQUIRED);
       TypeProtos.MajorType newType = builder.build();
-      MaterializedField outputField = MaterializedField.create(schemaPath.getAsUnescapedPath(), newType);
+      MaterializedField outputField = MaterializedField.create("f" + i++, newType);
       if (collector.hasErrors()) {
         throw new SchemaChangeException(String.format(
             "Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
@@ -533,7 +532,7 @@ public class OrderedPartitionRecordBatch extends AbstractRecordBatch<OrderedPart
     // if this now that all the batches on the queue are processed, we begin processing the incoming batches. For the
     // first one
     // we need to generate a new schema, even if the outcome is IterOutcome.OK After that we can reuse the schema.
-    if (this.startedUnsampledBatches == false) {
+    if (!this.startedUnsampledBatches) {
       this.startedUnsampledBatches = true;
       if (upstream == IterOutcome.OK) {
         upstream = IterOutcome.OK_NEW_SCHEMA;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/producer/ProducerConsumerBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/producer/ProducerConsumerBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/producer/ProducerConsumerBatch.java
index 589754f..3afa852 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/producer/ProducerConsumerBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/producer/ProducerConsumerBatch.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -99,9 +99,9 @@ public class ProducerConsumerBatch extends AbstractRecordBatch<ProducerConsumer>
         final MaterializedField field = schema.getColumn(i);
         final MajorType type = field.getType();
         final ValueVector vOut = container.getValueAccessorById(TypeHelper.getValueVectorClass(type.getMinorType(), type.getMode()),
-                container.getValueVectorId(SchemaPath.getSimplePath(field.getPath())).getFieldIds()).getValueVector();
+                container.getValueVectorId(SchemaPath.getSimplePath(field.getName())).getFieldIds()).getValueVector();
         final ValueVector vIn = newContainer.getValueAccessorById(TypeHelper.getValueVectorClass(type.getMinorType(), type.getMode()),
-                newContainer.getValueVectorId(SchemaPath.getSimplePath(field.getPath())).getFieldIds()).getValueVector();
+                newContainer.getValueVectorId(SchemaPath.getSimplePath(field.getName())).getFieldIds()).getValueVector();
         final TransferPair tp = vIn.makeTransferPair(vOut);
         tp.transfer();
       }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/project/ProjectRecordBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/project/ProjectRecordBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/project/ProjectRecordBatch.java
index 6baf070..9a72fcb 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/project/ProjectRecordBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/project/ProjectRecordBatch.java
@@ -202,7 +202,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
       this.recordCount = remainderIndex;
     } else {
       setValueCount(incomingRecordCount);
-      for(final VectorWrapper<?> v: incoming) {
+      for (final VectorWrapper<?> v: incoming) {
         v.clear();
       }
       this.recordCount = outputRecords;
@@ -331,8 +331,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
     final ClassifierResult result = new ClassifierResult();
     final boolean classify = isClassificationNeeded(exprs);
 
-    for (int i = 0; i < exprs.size(); i++) {
-      final NamedExpression namedExpression = exprs.get(i);
+    for (NamedExpression namedExpression : exprs) {
       result.clear();
 
       if (classify && namedExpression.getExpr() instanceof SchemaPath) {
@@ -341,15 +340,15 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
         if (result.isStar) {
           // The value indicates which wildcard we are processing now
           final Integer value = result.prefixMap.get(result.prefix);
-          if (value != null && value.intValue() == 1) {
+          if (value != null && value == 1) {
             int k = 0;
             for (final VectorWrapper<?> wrapper : incoming) {
               final ValueVector vvIn = wrapper.getValueVector();
-              if (k > result.outputNames.size()-1) {
+              if (k > result.outputNames.size() - 1) {
                 assert false;
               }
               final String name = result.outputNames.get(k++);  // get the renamed column names
-              if (name == EMPTY_STRING) {
+              if (name.isEmpty()) {
                 continue;
               }
 
@@ -362,16 +361,16 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
               final TransferPair tp = vvIn.makeTransferPair(vvOut);
               transfers.add(tp);
             }
-          } else if (value != null && value.intValue() > 1) { // subsequent wildcards should do a copy of incoming valuevectors
+          } else if (value != null && value > 1) { // subsequent wildcards should do a copy of incoming valuevectors
             int k = 0;
             for (final VectorWrapper<?> wrapper : incoming) {
               final ValueVector vvIn = wrapper.getValueVector();
-              final SchemaPath originalPath = SchemaPath.getSimplePath(vvIn.getField().getPath());
-              if (k > result.outputNames.size()-1) {
+              final SchemaPath originalPath = SchemaPath.getSimplePath(vvIn.getField().getName());
+              if (k > result.outputNames.size() - 1) {
                 assert false;
               }
               final String name = result.outputNames.get(k++);  // get the renamed column names
-              if (name == EMPTY_STRING) {
+              if (name.isEmpty()) {
                 continue;
               }
 
@@ -379,7 +378,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
                 continue;
               }
 
-              final LogicalExpression expr = ExpressionTreeMaterializer.materialize(originalPath, incoming, collector, context.getFunctionRegistry() );
+              final LogicalExpression expr = ExpressionTreeMaterializer.materialize(originalPath, incoming, collector, context.getFunctionRegistry());
               if (collector.hasErrors()) {
                 throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
               }
@@ -387,7 +386,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
               final MaterializedField outputField = MaterializedField.create(name, expr.getMajorType());
               final ValueVector vv = container.addOrGet(outputField, callBack);
               allocationVectors.add(vv);
-              final TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getPath()));
+              final TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getName()));
               final ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, true);
               final HoldingContainer hc = cg.addExpr(write, ClassGenerator.BlkCreateMode.TRUE_IF_BOUND);
             }
@@ -406,14 +405,14 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
       if (result != null && result.outputNames != null && result.outputNames.size() > 0) {
         boolean isMatched = false;
         for (int j = 0; j < result.outputNames.size(); j++) {
-          if (!result.outputNames.get(j).equals(EMPTY_STRING)) {
+          if (!result.outputNames.get(j).isEmpty()) {
             outputName = result.outputNames.get(j);
             isMatched = true;
             break;
           }
         }
 
-        if(!isMatched) {
+        if (!isMatched) {
           continue;
         }
       }
@@ -437,7 +436,8 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
         Preconditions.checkNotNull(incoming);
 
         final FieldReference ref = getRef(namedExpression);
-        final ValueVector vvOut = container.addOrGet(MaterializedField.create(ref.getAsUnescapedPath(), vectorRead.getMajorType()), callBack);
+        final ValueVector vvOut = container.addOrGet(MaterializedField.create(ref.getLastSegment().getNameSegment().getPath(),
+                                                                              vectorRead.getMajorType()), callBack);
         final TransferPair tp = vvIn.makeTransferPair(vvOut);
         transfers.add(tp);
         transferFieldIds.add(vectorRead.getFieldId().getFieldIds()[0]);
@@ -463,7 +463,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
         // need to do evaluation.
         final ValueVector vector = container.addOrGet(outputField, callBack);
         allocationVectors.add(vector);
-        final TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getPath()));
+        final TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getName()));
         final boolean useSetSafe = !(vector instanceof FixedWidthVector);
         final ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, useSetSafe);
         final HoldingContainer hc = cg.addExpr(write, ClassGenerator.BlkCreateMode.TRUE_IF_BOUND);
@@ -510,17 +510,19 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
 
     final List<NamedExpression> exprs = Lists.newArrayList();
     for (final MaterializedField field : incoming.getSchema()) {
+      String fieldName = field.getName();
       if (Types.isComplex(field.getType()) || Types.isRepeated(field.getType())) {
-        final LogicalExpression convertToJson = FunctionCallFactory.createConvert(ConvertExpression.CONVERT_TO, "JSON", SchemaPath.getSimplePath(field.getPath()), ExpressionPosition.UNKNOWN);
+        final LogicalExpression convertToJson = FunctionCallFactory.createConvert(ConvertExpression.CONVERT_TO, "JSON",
+                                                            SchemaPath.getSimplePath(fieldName), ExpressionPosition.UNKNOWN);
         final String castFuncName = CastFunctions.getCastFunc(MinorType.VARCHAR);
         final List<LogicalExpression> castArgs = Lists.newArrayList();
         castArgs.add(convertToJson);  //input_expr
         // implicitly casting to varchar, since we don't know actual source length, cast to undefined length, which will preserve source length
         castArgs.add(new ValueExpressions.LongExpression(Types.MAX_VARCHAR_LENGTH, null));
         final FunctionCall castCall = new FunctionCall(castFuncName, castArgs, ExpressionPosition.UNKNOWN);
-        exprs.add(new NamedExpression(castCall, new FieldReference(field.getPath())));
+        exprs.add(new NamedExpression(castCall, new FieldReference(fieldName)));
       } else {
-        exprs.add(new NamedExpression(SchemaPath.getSimplePath(field.getPath()), new FieldReference(field.getPath())));
+        exprs.add(new NamedExpression(SchemaPath.getSimplePath(fieldName), new FieldReference(fieldName)));
       }
     }
     return exprs;
@@ -528,8 +530,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
 
   private boolean isClassificationNeeded(final List<NamedExpression> exprs) {
     boolean needed = false;
-    for (int i = 0; i < exprs.size(); i++) {
-      final NamedExpression ex = exprs.get(i);
+    for (NamedExpression ex : exprs) {
       if (!(ex.getExpr() instanceof SchemaPath)) {
         continue;
       }
@@ -570,7 +571,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
   * @param origName            the original input name of the column
   * @param result              the data structure to keep track of the used names and decide what output name should be
   *                            to ensure uniqueness
-  * @Param allowDupsWithRename if the original name has been used, is renaming allowed to ensure output name unique
+  * @param allowDupsWithRename if the original name has been used, is renaming allowed to ensure output name unique
   */
   private void addToResultMaps(final String origName, final ClassifierResult result, final boolean allowDupsWithRename) {
     String name = origName;
@@ -610,7 +611,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
     boolean exprIsFirstWildcard = false;
     if (exprContainsStar) {
       result.isStar = true;
-      final Integer value = (Integer) result.prefixMap.get(exprPrefix);
+      final Integer value = result.prefixMap.get(exprPrefix);
       if (value == null) {
         final Integer n = 1;
         result.prefixMap.put(exprPrefix, n);
@@ -634,9 +635,9 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
       assert(components.length == 2);
       final String prefix = components[0];
       result.outputNames = Lists.newArrayList();
-      for(final VectorWrapper<?> wrapper : incoming) {
+      for (final VectorWrapper<?> wrapper : incoming) {
         final ValueVector vvIn = wrapper.getValueVector();
-        final String name = vvIn.getField().getPath();
+        final String name = vvIn.getField().getName();
 
         // add the prefix to the incoming column name
         final String newName = prefix + StarColumnHelper.PREFIX_DELIMITER + name;
@@ -656,7 +657,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
 
         for (final VectorWrapper<?> wrapper : incoming) {
           final ValueVector vvIn = wrapper.getValueVector();
-          final String incomingName = vvIn.getField().getPath();
+          final String incomingName = vvIn.getField().getName();
           // get the prefix of the name
           final String[] nameComponents = incomingName.split(StarColumnHelper.PREFIX_DELIMITER, 2);
           // if incoming valuevector does not have a prefix, ignore it since this expression is not referencing it
@@ -666,10 +667,9 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
           }
           final String namePrefix = nameComponents[0];
           if (exprPrefix.equalsIgnoreCase(namePrefix)) {
-            final String newName = incomingName;
-            if (!result.outputMap.containsKey(newName)) {
-              result.outputNames.set(k, newName);
-              result.outputMap.put(newName,  newName);
+            if (!result.outputMap.containsKey(incomingName)) {
+              result.outputNames.set(k, incomingName);
+              result.outputMap.put(incomingName, incomingName);
             }
           }
           k++;
@@ -679,7 +679,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
         if (exprContainsStar) {
           for (final VectorWrapper<?> wrapper : incoming) {
             final ValueVector vvIn = wrapper.getValueVector();
-            final String incomingName = vvIn.getField().getPath();
+            final String incomingName = vvIn.getField().getName();
             if (refContainsStar) {
               addToResultMaps(incomingName, result, true); // allow dups since this is likely top-level project
             } else {
@@ -698,11 +698,11 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
     }
 
     // input is wildcard and it is not the first wildcard
-    else if(exprIsStar) {
+    else if (exprIsStar) {
       result.outputNames = Lists.newArrayList();
       for (final VectorWrapper<?> wrapper : incoming) {
         final ValueVector vvIn = wrapper.getValueVector();
-        final String incomingName = vvIn.getField().getPath();
+        final String incomingName = vvIn.getField().getName();
         addToResultMaps(incomingName, result, true); // allow dups since this is likely top-level project
       }
     }
@@ -723,7 +723,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
 
       for (final VectorWrapper<?> wrapper : incoming) {
         final ValueVector vvIn = wrapper.getValueVector();
-        final String name = vvIn.getField().getPath();
+        final String name = vvIn.getField().getName();
         final String[] components = name.split(StarColumnHelper.PREFIX_DELIMITER, 2);
         if (components.length <= 1)  {
           k++;
@@ -760,7 +760,7 @@ public class ProjectRecordBatch extends AbstractSingleRecordBatch<Project> {
       result.outputNames = Lists.newArrayList();
       for (final VectorWrapper<?> wrapper : incoming) {
         final ValueVector vvIn = wrapper.getValueVector();
-        final String incomingName = vvIn.getField().getPath();
+        final String incomingName = vvIn.getField().getName();
         if (expr.getPath().equalsIgnoreCase(incomingName)) {  // case insensitive matching of field name.
           final String newName = ref.getPath();
           addToResultMaps(newName, result, true);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/union/UnionAllRecordBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/union/UnionAllRecordBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/union/UnionAllRecordBatch.java
index e6a0dd4..5afe66b 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/union/UnionAllRecordBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/union/UnionAllRecordBatch.java
@@ -103,7 +103,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
     try {
       IterOutcome upstream = unionAllInput.nextBatch();
       logger.debug("Upstream of Union-All: {}", upstream);
-      switch(upstream) {
+      switch (upstream) {
         case NONE:
         case OUT_OF_MEMORY:
         case STOP:
@@ -114,7 +114,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
         case OK:
           IterOutcome workOutcome = doWork();
 
-          if(workOutcome != IterOutcome.OK) {
+          if (workOutcome != IterOutcome.OK) {
             return workOutcome;
           } else {
             return upstream;
@@ -164,9 +164,9 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
     transfers.clear();
 
     // If both sides of Union-All are empty
-    if(unionAllInput.isBothSideEmpty()) {
-      for(int i = 0; i < outputFields.size(); ++i) {
-        final String colName = outputFields.get(i).getPath();
+    if (unionAllInput.isBothSideEmpty()) {
+      for (MaterializedField materializedField : outputFields) {
+        final String colName = materializedField.getName();
         final MajorType majorType = MajorType.newBuilder()
             .setMinorType(MinorType.INT)
             .setMode(DataMode.OPTIONAL)
@@ -186,12 +186,12 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
     // Uncomment out this line to debug the generated code.
 //    cg.getCodeGenerator().saveCodeForDebugging(true);
     int index = 0;
-    for(VectorWrapper<?> vw : current) {
+    for (VectorWrapper<?> vw : current) {
        ValueVector vvIn = vw.getValueVector();
       // get the original input column names
-      SchemaPath inputPath = SchemaPath.getSimplePath(vvIn.getField().getPath());
+      SchemaPath inputPath = SchemaPath.getSimplePath(vvIn.getField().getName());
       // get the renamed column names
-      SchemaPath outputPath = SchemaPath.getSimplePath(outputFields.get(index).getPath());
+      SchemaPath outputPath = SchemaPath.getSimplePath(outputFields.get(index).getName());
 
       final ErrorCollector collector = new ErrorCollectorImpl();
       // According to input data names, Minortypes, Datamodes, choose to
@@ -202,19 +202,20 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
         // Transfer column
 
         MajorType outputFieldType = outputFields.get(index).getType();
-        MaterializedField outputField = MaterializedField.create(outputPath.getAsUnescapedPath(), outputFieldType);
+        MaterializedField outputField = MaterializedField.create(outputPath.getLastSegment().getNameSegment().getPath(),
+                                                                  outputFieldType);
 
         /*
           todo: Fix if condition when DRILL-4824 is merged
           If condition should be changed to:
-          `if (outputFields.get(index).getPath().equals(inputPath.getAsUnescapedPath())) {`
+          `if (outputFields.get(index).getName().equals(inputPath.getRootSegmentPath())) {`
           DRILL-5419 has changed condition to correct one but this caused regression (DRILL-5521).
           Root cause is missing indication of child column in map types when it is null.
           DRILL-4824 is re-working json reader implementation, including map types and will fix this problem.
           Reverting condition to previous one to avoid regression till DRILL-4824 is merged.
           Unit test - TestJsonReader.testKvgenWithUnionAll().
          */
-        if (outputFields.get(index).getPath().equals(inputPath)) {
+        if (outputFields.get(index).getName().equals(inputPath)) {
           ValueVector vvOut = container.addOrGet(outputField);
           TransferPair tp = vvIn.makeTransferPair(vvOut);
           transfers.add(tp);
@@ -227,7 +228,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
 
           ValueVector vv = container.addOrGet(outputField, callBack);
           allocationVectors.add(vv);
-          TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getPath()));
+          TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getName()));
           ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, true);
           cg.addExpr(write);
         }
@@ -240,7 +241,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
 
         // If the inputs' DataMode is required and the outputs' DataMode is not required
         // cast to the one with the least restriction
-        if(vvIn.getField().getType().getMode() == DataMode.REQUIRED
+        if (vvIn.getField().getType().getMode() == DataMode.REQUIRED
             && outputFields.get(index).getType().getMode() != DataMode.REQUIRED) {
           expr = ExpressionTreeMaterializer.convertToNullableType(expr, vvIn.getField().getType().getMinorType(), context.getFunctionRegistry(), collector);
           if (collector.hasErrors()) {
@@ -250,17 +251,18 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
 
         // If two inputs' MinorTypes are different,
         // Insert a cast before the Union operation
-        if(vvIn.getField().getType().getMinorType() != outputFields.get(index).getType().getMinorType()) {
+        if (vvIn.getField().getType().getMinorType() != outputFields.get(index).getType().getMinorType()) {
           expr = ExpressionTreeMaterializer.addCastExpression(expr, outputFields.get(index).getType(), context.getFunctionRegistry(), collector);
           if (collector.hasErrors()) {
             throw new SchemaChangeException(String.format("Failure while trying to materialize incoming schema.  Errors:\n %s.", collector.toErrorString()));
           }
         }
 
-        final MaterializedField outputField = MaterializedField.create(outputPath.getAsUnescapedPath(), expr.getMajorType());
+        final MaterializedField outputField = MaterializedField.create(outputPath.getLastSegment().getNameSegment().getPath(),
+                                                                        expr.getMajorType());
         ValueVector vector = container.addOrGet(outputField, callBack);
         allocationVectors.add(vector);
-        TypedFieldId fid = container.getValueVectorId(SchemaPath.getSimplePath(outputField.getPath()));
+        TypedFieldId fid = container.getValueVectorId(outputPath);
 
         boolean useSetSafe = !(vector instanceof FixedWidthVector);
         ValueVectorWriteExpression write = new ValueVectorWriteExpression(fid, expr, useSetSafe);
@@ -272,12 +274,12 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
     unionall = context.getImplementationClass(cg.getCodeGenerator());
     unionall.setup(context, current, this, transfers);
 
-    if(!schemaAvailable) {
+    if (!schemaAvailable) {
       container.buildSchema(BatchSchema.SelectionVectorMode.NONE);
       schemaAvailable = true;
     }
 
-    if(!doAlloc()) {
+    if (!doAlloc()) {
       return IterOutcome.OUT_OF_MEMORY;
     }
 
@@ -298,7 +300,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
 
   // This method is used by inner class to clear the current record batch
   private void clearCurrentRecordBatch() {
-    for(VectorWrapper<?> v: current) {
+    for (VectorWrapper<?> v: current) {
       v.clear();
     }
   }
@@ -333,9 +335,9 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
     }
 
     public IterOutcome nextBatch() throws SchemaChangeException {
-      if(upstream == RecordBatch.IterOutcome.NOT_YET) {
+      if (upstream == RecordBatch.IterOutcome.NOT_YET) {
         IterOutcome iterLeft = leftSide.nextBatch();
-        switch(iterLeft) {
+        switch (iterLeft) {
           case OK_NEW_SCHEMA:
             /*
              * If the first few record batches are all empty,
@@ -345,7 +347,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
              * Thus, while-loop is necessary to skip those empty batches.
              */
             whileLoop:
-            while(leftSide.getRecordBatch().getRecordCount() == 0) {
+            while (leftSide.getRecordBatch().getRecordCount() == 0) {
               iterLeft = leftSide.nextBatch();
 
               switch(iterLeft) {
@@ -380,11 +382,11 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
         }
 
         IterOutcome iterRight = rightSide.nextBatch();
-        switch(iterRight) {
+        switch (iterRight) {
           case OK_NEW_SCHEMA:
             // Unless there is no record batch on the left side of the inputs,
             // always start processing from the left side.
-            if(leftIsFinish) {
+            if (leftIsFinish) {
               unionAllRecordBatch.setCurrentRecordBatch(rightSide.getRecordBatch());
             } else {
               unionAllRecordBatch.setCurrentRecordBatch(leftSide.getRecordBatch());
@@ -402,9 +404,9 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
              * Thus, while-loop is necessary to skip those empty batches.
              */
             whileLoop:
-            while(rightSide.getRecordBatch().getRecordCount() == 0) {
+            while (rightSide.getRecordBatch().getRecordCount() == 0) {
               iterRight = rightSide.nextBatch();
-              switch(iterRight) {
+              switch (iterRight) {
                 case STOP:
                 case OUT_OF_MEMORY:
                   return iterRight;
@@ -425,7 +427,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
               }
             }
 
-            if(leftIsFinish && rightIsFinish) {
+            if (leftIsFinish && rightIsFinish) {
               setBothSideEmpty(true);
             }
 
@@ -446,19 +448,19 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
         upstream = IterOutcome.OK_NEW_SCHEMA;
         return upstream;
       } else {
-        if(isBothSideEmpty()) {
+        if (isBothSideEmpty()) {
           return IterOutcome.NONE;
         }
 
         unionAllRecordBatch.clearCurrentRecordBatch();
 
-        if(leftIsFinish && rightIsFinish) {
+        if (leftIsFinish && rightIsFinish) {
           upstream = IterOutcome.NONE;
           return upstream;
-        } else if(leftIsFinish) {
+        } else if (leftIsFinish) {
           IterOutcome iterOutcome = rightSide.nextBatch();
 
-          switch(iterOutcome) {
+          switch (iterOutcome) {
             case NONE:
               rightIsFinish = true;
               // fall through
@@ -468,7 +470,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
               return upstream;
 
             case OK_NEW_SCHEMA:
-              if(!rightSide.getRecordBatch().getSchema().equals(rightSchema)) {
+              if (!rightSide.getRecordBatch().getSchema().equals(rightSchema)) {
                 throw new SchemaChangeException("Schema change detected in the right input of Union-All. This is not currently supported");
               }
               iterOutcome = IterOutcome.OK;
@@ -481,9 +483,9 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
             default:
               throw new IllegalStateException(String.format("Unknown state %s.", upstream));
           }
-        } else if(rightIsFinish) {
+        } else if (rightIsFinish) {
           IterOutcome iterOutcome = leftSide.nextBatch();
-          switch(iterOutcome) {
+          switch (iterOutcome) {
             case STOP:
             case OUT_OF_MEMORY:
             case NONE:
@@ -501,14 +503,14 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
         } else {
           IterOutcome iterOutcome = leftSide.nextBatch();
 
-          switch(iterOutcome) {
+          switch (iterOutcome) {
             case STOP:
             case OUT_OF_MEMORY:
               upstream = iterOutcome;
               return upstream;
 
             case OK_NEW_SCHEMA:
-              if(!leftSide.getRecordBatch().getSchema().equals(leftSchema)) {
+              if (!leftSide.getRecordBatch().getSchema().equals(leftSchema)) {
                 throw new SchemaChangeException("Schema change detected in the left input of Union-All. This is not currently supported");
               }
 
@@ -549,10 +551,10 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
      *      types are nullable integer
      */
     private void inferOutputFields() {
-      if(!leftIsFinish && !rightIsFinish) {
+      if (!leftIsFinish && !rightIsFinish) {
         // Both sides are non-empty
         inferOutputFieldsBothSide();
-      } else if(!rightIsFinish) {
+      } else if (!rightIsFinish) {
         // Left side is non-empty
         // While use left side's column names as output column names,
         // use right side's column types as output column types.
@@ -585,7 +587,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
         if (hasSameTypeAndMode(leftField, rightField)) {
           MajorType.Builder builder = MajorType.newBuilder().setMinorType(leftField.getType().getMinorType()).setMode(leftField.getDataMode());
           builder = Types.calculateTypePrecisionAndScale(leftField.getType(), rightField.getType(), builder);
-          outputFields.add(MaterializedField.create(leftField.getPath(), builder.build()));
+          outputFields.add(MaterializedField.create(leftField.getName(), builder.build()));
         } else {
           // If the output type is not the same,
           // cast the column of one of the table to a data type which is the Least Restrictive
@@ -612,7 +614,7 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
           dataModes.add(rightField.getType().getMode());
           builder.setMode(TypeCastRules.getLeastRestrictiveDataMode(dataModes));
 
-          outputFields.add(MaterializedField.create(leftField.getPath(), builder.build()));
+          outputFields.add(MaterializedField.create(leftField.getName(), builder.build()));
         }
         ++index;
       }
@@ -624,20 +626,19 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
       outputFields = Lists.newArrayList();
 
       final List<String> outputColumnNames = Lists.newArrayList();
-      final Iterator<MaterializedField> iterForNames = schemaForNames.iterator();
-      while(iterForNames.hasNext()) {
-        outputColumnNames.add(iterForNames.next().getPath());
+      for (MaterializedField materializedField : schemaForNames) {
+        outputColumnNames.add(materializedField.getName());
       }
 
       final Iterator<MaterializedField> iterForTypes = schemaForTypes.iterator();
-      for(int i = 0; iterForTypes.hasNext(); ++i) {
+      for (int i = 0; iterForTypes.hasNext(); ++i) {
         MaterializedField field = iterForTypes.next();
         outputFields.add(MaterializedField.create(outputColumnNames.get(i), field.getType()));
       }
     }
 
     public List<MaterializedField> getOutputFields() {
-      if(outputFields == null) {
+      if (outputFields == null) {
         throw new NullPointerException("Output fields have not been inferred");
       }
 
@@ -670,11 +671,11 @@ public class UnionAllRecordBatch extends AbstractRecordBatch<UnionAll> {
       }
 
       public IterOutcome nextBatch() {
-        if(upstream == IterOutcome.NONE) {
+        if (upstream == IterOutcome.NONE) {
           throw new IllegalStateException(String.format("Unknown state %s.", upstream));
         }
 
-        if(upstream == IterOutcome.NOT_YET) {
+        if (upstream == IterOutcome.NOT_YET) {
           upstream = unionAllRecordBatch.next(recordBatch);
 
           return upstream;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
index 39c662f..e0cfc7a 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/ExternalSortBatch.java
@@ -678,7 +678,7 @@ public class ExternalSortBatch extends AbstractRecordBatch<ExternalSort> {
       for (BatchGroup group : batchGroupList) {
         vectors[i++] = group.getValueAccessorById(
             field.getValueClass(),
-            group.getValueVectorId(SchemaPath.getSimplePath(field.getPath())).getFieldIds())
+            group.getValueVectorId(SchemaPath.getSimplePath(field.getName())).getFieldIds())
             .getValueVector();
       }
       cont.add(vectors);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/managed/PriorityQueueCopierWrapper.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/managed/PriorityQueueCopierWrapper.java b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/managed/PriorityQueueCopierWrapper.java
index 6ec8862..2d82cc1 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/managed/PriorityQueueCopierWrapper.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/xsort/managed/PriorityQueueCopierWrapper.java
@@ -310,7 +310,7 @@ public class PriorityQueueCopierWrapper extends BaseSortWrapper {
         for (BatchGroup group : batchGroupList) {
           vectors[i++] = group.getValueAccessorById(
               field.getValueClass(),
-              group.getValueVectorId(SchemaPath.getSimplePath(field.getPath())).getFieldIds())
+              group.getValueVectorId(SchemaPath.getSimplePath(field.getName())).getFieldIds())
               .getValueVector();
         }
         cont.add(vectors);

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/planner/logical/partition/PruneScanRule.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/planner/logical/partition/PruneScanRule.java b/exec/java-exec/src/main/java/org/apache/drill/exec/planner/logical/partition/PruneScanRule.java
index 9a3ef96..837ddd8 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/planner/logical/partition/PruneScanRule.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/planner/logical/partition/PruneScanRule.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -160,7 +160,7 @@ public abstract class PruneScanRule extends StoragePluginOptimizerRule {
          metaContext = ((FormatSelection)selection).getSelection().getMetaContext();
     }
 
-    RexNode condition = null;
+    RexNode condition;
     if (projectRel == null) {
       condition = filterRel.getCondition();
     } else {
@@ -244,7 +244,7 @@ public abstract class PruneScanRule extends StoragePluginOptimizerRule {
         for (int partitionColumnIndex : BitSets.toIter(partitionColumnBitSet)) {
           SchemaPath column = SchemaPath.getSimplePath(fieldNameMap.get(partitionColumnIndex));
           MajorType type = descriptor.getVectorType(column, settings);
-          MaterializedField field = MaterializedField.create(column.getAsUnescapedPath(), type);
+          MaterializedField field = MaterializedField.create(column.getLastSegment().getNameSegment().getPath(), type);
           ValueVector v = TypeHelper.getNewVector(field, allocator);
           v.allocateNew();
           vectors[partitionColumnIndex] = v;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/record/RecordBatchLoader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/record/RecordBatchLoader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/record/RecordBatchLoader.java
index 3801cb5..9a8483b 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/record/RecordBatchLoader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/record/RecordBatchLoader.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -88,7 +88,7 @@ public class RecordBatchLoader implements VectorAccessible, Iterable<VectorWrapp
     final Map<String, ValueVector> oldFields = Maps.newHashMap();
     for(final VectorWrapper<?> wrapper : container) {
       final ValueVector vector = wrapper.getValueVector();
-      oldFields.put(vector.getField().getPath(), vector);
+      oldFields.put(vector.getField().getName(), vector);
     }
 
     final VectorContainer newVectors = new VectorContainer();
@@ -97,7 +97,7 @@ public class RecordBatchLoader implements VectorAccessible, Iterable<VectorWrapp
       int bufOffset = 0;
       for(final SerializedField field : fields) {
         final MaterializedField fieldDef = MaterializedField.create(field);
-        ValueVector vector = oldFields.remove(fieldDef.getPath());
+        ValueVector vector = oldFields.remove(fieldDef.getName());
 
         if (vector == null) {
           // Field did not exist previously--is schema change.

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/record/SchemaUtil.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/record/SchemaUtil.java b/exec/java-exec/src/main/java/org/apache/drill/exec/record/SchemaUtil.java
index 28f5bf2..e1a1031 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/record/SchemaUtil.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/record/SchemaUtil.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -53,7 +53,7 @@ public class SchemaUtil {
 
     for (BatchSchema s : schemas) {
       for (MaterializedField field : s) {
-        SchemaPath path = SchemaPath.getSimplePath(field.getPath());
+        SchemaPath path = SchemaPath.getSimplePath(field.getName());
         Set<MinorType> currentTypes = typeSetMap.get(path);
         if (currentTypes == null) {
           currentTypes = Sets.newHashSet();
@@ -64,9 +64,7 @@ public class SchemaUtil {
           throw new RuntimeException("Schema change not currently supported for schemas with complex types");
         }
         if (newType == MinorType.UNION) {
-          for (MinorType subType : field.getType().getSubTypeList()) {
-            currentTypes.add(subType);
-          }
+          currentTypes.addAll(field.getType().getSubTypeList());
         } else {
           currentTypes.add(newType);
         }
@@ -82,10 +80,11 @@ public class SchemaUtil {
         for (MinorType t : types) {
           builder.addSubType(t);
         }
-        MaterializedField field = MaterializedField.create(path.getAsUnescapedPath(), builder.build());
+        MaterializedField field = MaterializedField.create(path.getLastSegment().getNameSegment().getPath(), builder.build());
         fields.add(field);
       } else {
-        MaterializedField field = MaterializedField.create(path.getAsUnescapedPath(), Types.optional(types.iterator().next()));
+        MaterializedField field = MaterializedField.create(path.getLastSegment().getNameSegment().getPath(),
+                                                            Types.optional(types.iterator().next()));
         fields.add(field);
       }
     }
@@ -162,12 +161,12 @@ public class SchemaUtil {
       if (w.isHyper()) {
         isHyper = true;
         final ValueVector[] vvs = w.getValueVectors();
-        vectorMap.put(vvs[0].getField().getPath(), vvs);
+        vectorMap.put(vvs[0].getField().getName(), vvs);
       } else {
         assert !isHyper;
         @SuppressWarnings("resource")
         final ValueVector v = w.getValueVector();
-        vectorMap.put(v.getField().getPath(), v);
+        vectorMap.put(v.getField().getName(), v);
       }
     }
 
@@ -175,7 +174,7 @@ public class SchemaUtil {
 
     for (MaterializedField field : toSchema) {
       if (isHyper) {
-        final ValueVector[] vvs = (ValueVector[]) vectorMap.remove(field.getPath());
+        final ValueVector[] vvs = (ValueVector[]) vectorMap.remove(field.getName());
         final ValueVector[] vvsOut;
         if (vvs == null) {
           vvsOut = new ValueVector[1];
@@ -189,7 +188,7 @@ public class SchemaUtil {
         c.add(vvsOut);
       } else {
         @SuppressWarnings("resource")
-        final ValueVector v = (ValueVector) vectorMap.remove(field.getPath());
+        final ValueVector v = (ValueVector) vectorMap.remove(field.getName());
         c.add(coerceVector(v, c, field, recordCount, allocator));
       }
     }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java
index 99353ea..63cac7d 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/record/VectorContainer.java
@@ -136,7 +136,7 @@ public class VectorContainer implements VectorAccessible {
 
   @SuppressWarnings({ "resource", "unchecked" })
   public <T extends ValueVector> T addOrGet(final MaterializedField field, final SchemaChangeCallBack callBack) {
-    final TypedFieldId id = getValueVectorId(SchemaPath.getSimplePath(field.getPath()));
+    final TypedFieldId id = getValueVectorId(SchemaPath.getSimplePath(field.getName()));
     final ValueVector vector;
     final Class<?> clazz = TypeHelper.getValueVectorClass(field.getType().getMinorType(), field.getType().getMode());
     if (id != null) {
@@ -206,12 +206,12 @@ public class VectorContainer implements VectorAccessible {
    */
   public static VectorContainer canonicalize(VectorContainer original) {
     VectorContainer vc = new VectorContainer();
-    List<VectorWrapper<?>> canonicalWrappers = new ArrayList<VectorWrapper<?>>(original.wrappers);
+    List<VectorWrapper<?>> canonicalWrappers = new ArrayList<>(original.wrappers);
     // Sort list of VectorWrapper alphabetically based on SchemaPath.
     Collections.sort(canonicalWrappers, new Comparator<VectorWrapper<?>>() {
       @Override
       public int compare(VectorWrapper<?> v1, VectorWrapper<?> v2) {
-        return v1.getField().getPath().compareTo(v2.getField().getPath());
+        return v1.getField().getName().compareTo(v2.getField().getName());
       }
     });
 
@@ -255,9 +255,7 @@ public class VectorContainer implements VectorAccessible {
     schema = null;
     Class<?> clazz = hyperVector[0].getClass();
     ValueVector[] c = (ValueVector[]) Array.newInstance(clazz, hyperVector.length);
-    for (int i = 0; i < hyperVector.length; i++) {
-      c[i] = hyperVector[i];
-    }
+    System.arraycopy(hyperVector, 0, c, 0, hyperVector.length);
     // todo: work with a merged schema.
     wrappers.add(HyperVectorWrapper.create(hyperVector[0].getField(), c, releasable));
   }
@@ -283,7 +281,7 @@ public class VectorContainer implements VectorAccessible {
     for (VectorWrapper<?> w : wrappers){
       if (!w.isHyper() && old == w.getValueVector()) {
         w.clear();
-        wrappers.set(i, new SimpleVectorWrapper<ValueVector>(newVector));
+        wrappers.set(i, new SimpleVectorWrapper<>(newVector));
         return;
       }
       i++;

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebUserConnection.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebUserConnection.java b/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebUserConnection.java
index 62c6efd..bcce9eb 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebUserConnection.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/WebUserConnection.java
@@ -99,7 +99,7 @@ public class WebUserConnection extends AbstractDisposableUserClientConnection im
         // TODO:  Clean:  DRILL-2933:  That load(...) no longer throws
         // SchemaChangeException, so check/clean catch clause below.
         for (int i = 0; i < loader.getSchema().getFieldCount(); ++i) {
-          columns.add(loader.getSchema().getColumn(i).getPath());
+          columns.add(loader.getSchema().getColumn(i).getName());
         }
         for (int i = 0; i < rows; ++i) {
           final Map<String, String> record = Maps.newHashMap();

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/ColumnExplorer.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/ColumnExplorer.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/ColumnExplorer.java
index ccd622b..fa8121e 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/ColumnExplorer.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/ColumnExplorer.java
@@ -95,7 +95,7 @@ public class ColumnExplorer {
    */
   public static boolean isPartitionColumn(OptionManager optionManager, SchemaPath column){
     String partitionDesignator = optionManager.getOption(ExecConstants.FILESYSTEM_PARTITION_COLUMN_LABEL).string_val;
-    String path = column.getAsUnescapedPath();
+    String path = column.getRootSegmentPath();
     return isPartitionColumn(partitionDesignator, path);
   }
 
@@ -187,7 +187,7 @@ public class ColumnExplorer {
       selectedImplicitColumns.putAll(allImplicitColumns);
     } else {
       for (SchemaPath column : columns) {
-        String path = column.getAsUnescapedPath();
+        String path = column.getRootSegmentPath();
         if (isPartitionColumn(partitionDesignator, path)) {
           selectedPartitionColumns.add(Integer.parseInt(path.substring(partitionDesignator.length())));
         } else if (allImplicitColumns.get(path) != null) {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/ischema/InfoSchemaFilterBuilder.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/ischema/InfoSchemaFilterBuilder.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/ischema/InfoSchemaFilterBuilder.java
index 22fb48c..6262dce 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/ischema/InfoSchemaFilterBuilder.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/ischema/InfoSchemaFilterBuilder.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -138,7 +138,7 @@ public class InfoSchemaFilterBuilder extends AbstractExprVisitor<ExprNode, Void,
   public ExprNode visitCastExpression(CastExpression e, Void value) throws RuntimeException {
     if (e.getInput() instanceof FieldReference) {
       FieldReference fieldRef = (FieldReference) e.getInput();
-      String field = fieldRef.getAsUnescapedPath().toUpperCase();
+      String field = fieldRef.getRootSegmentPath().toUpperCase();
       if (field.equals(CATS_COL_CATALOG_NAME)
           || field.equals(SCHS_COL_SCHEMA_NAME)
           || field.equals(SHRD_COL_TABLE_NAME)
@@ -158,7 +158,7 @@ public class InfoSchemaFilterBuilder extends AbstractExprVisitor<ExprNode, Void,
 
   @Override
   public ExprNode visitSchemaPath(SchemaPath path, Void value) throws RuntimeException {
-    String field = path.getAsUnescapedPath().toUpperCase();
+    String field = path.getRootSegmentPath().toUpperCase();
     if (field.equals(CATS_COL_CATALOG_NAME)
         || field.equals(SCHS_COL_SCHEMA_NAME)
         || field.equals(SHRD_COL_TABLE_NAME)

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/Metadata.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/Metadata.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/Metadata.java
index a33f46a..4a8c5f3 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/Metadata.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/Metadata.java
@@ -80,10 +80,12 @@ import com.google.common.collect.Maps;
 
 import javax.annotation.Nullable;
 
+import static org.apache.drill.exec.store.parquet.MetadataVersion.Constants.SUPPORTED_VERSIONS;
 import static org.apache.drill.exec.store.parquet.MetadataVersion.Constants.V1;
 import static org.apache.drill.exec.store.parquet.MetadataVersion.Constants.V2;
 import static org.apache.drill.exec.store.parquet.MetadataVersion.Constants.V3;
 import static org.apache.drill.exec.store.parquet.MetadataVersion.Constants.V3_1;
+import static org.apache.drill.exec.store.parquet.MetadataVersion.Constants.V3_2;
 
 public class Metadata {
   static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(Metadata.class);
@@ -234,7 +236,8 @@ public class Metadata {
         childFiles.add(file);
       }
     }
-    ParquetTableMetadata_v3 parquetTableMetadata = new ParquetTableMetadata_v3(V3_1, DrillVersionInfo.getVersion());
+    ParquetTableMetadata_v3 parquetTableMetadata = new ParquetTableMetadata_v3(SUPPORTED_VERSIONS.last().toString(),
+                                                                                DrillVersionInfo.getVersion());
     if (childFiles.size() > 0) {
       List<ParquetFileMetadata_v3 > childFilesMetadata =
           getParquetFileMetadata_v3(parquetTableMetadata, childFiles);
@@ -308,7 +311,8 @@ public class Metadata {
    */
   private ParquetTableMetadata_v3 getParquetTableMetadata(List<FileStatus> fileStatuses)
       throws IOException {
-    ParquetTableMetadata_v3 tableMetadata = new ParquetTableMetadata_v3(V3_1, DrillVersionInfo.getVersion());
+    ParquetTableMetadata_v3 tableMetadata = new ParquetTableMetadata_v3(SUPPORTED_VERSIONS.last().toString(),
+                                                                        DrillVersionInfo.getVersion());
     List<ParquetFileMetadata_v3> fileMetadataList = getParquetFileMetadata_v3(tableMetadata, fileStatuses);
     tableMetadata.files = fileMetadataList;
     tableMetadata.directories = new ArrayList<String>();
@@ -695,7 +699,8 @@ public class Metadata {
       @JsonSubTypes.Type(value = ParquetTableMetadata_v1.class, name = V1),
       @JsonSubTypes.Type(value = ParquetTableMetadata_v2.class, name = V2),
       @JsonSubTypes.Type(value = ParquetTableMetadata_v3.class, name = V3),
-      @JsonSubTypes.Type(value = ParquetTableMetadata_v3.class, name = V3_1)
+      @JsonSubTypes.Type(value = ParquetTableMetadata_v3.class, name = V3_1),
+      @JsonSubTypes.Type(value = ParquetTableMetadata_v3.class, name = V3_2)
       })
   public static abstract class ParquetTableMetadataBase {
 
@@ -1421,7 +1426,7 @@ public class Metadata {
 
   }
 
-  @JsonTypeName(V3_1)
+  @JsonTypeName(V3_2)
   public static class ParquetTableMetadata_v3 extends ParquetTableMetadataBase {
     @JsonProperty(value = "metadata_version", access = JsonProperty.Access.WRITE_ONLY) private String metadataVersion;
     /*
@@ -1654,16 +1659,20 @@ public class Metadata {
     }
 
     private static class Key {
-      private String[] name;
+      private SchemaPath name;
       private int hashCode = 0;
 
       public Key(String[] name) {
-        this.name = name;
+        this.name = SchemaPath.getCompoundPath(name);
+      }
+
+      public Key(SchemaPath name) {
+        this.name = new SchemaPath(name);
       }
 
       @Override public int hashCode() {
         if (hashCode == 0) {
-          hashCode = Arrays.hashCode(name);
+          hashCode = name.hashCode();
         }
         return hashCode;
       }
@@ -1676,20 +1685,11 @@ public class Metadata {
           return false;
         }
         final Key other = (Key) obj;
-        return Arrays.equals(this.name, other.name);
+        return this.name.equals(other.name);
       }
 
       @Override public String toString() {
-        String s = null;
-        for (String namePart : name) {
-          if (s != null) {
-            s += ".";
-            s += namePart;
-          } else {
-            s = namePart;
-          }
-        }
-        return s;
+        return name.toString();
       }
 
       public static class DeSerializer extends KeyDeserializer {
@@ -1701,6 +1701,10 @@ public class Metadata {
         @Override
         public Object deserializeKey(String key, com.fasterxml.jackson.databind.DeserializationContext ctxt)
             throws IOException, com.fasterxml.jackson.core.JsonProcessingException {
+          // key string should contain '`' char if the field was serialized as SchemaPath object
+          if (key.contains("`")) {
+            return new Key(SchemaPath.parseFromString(key));
+          }
           return new Key(key.split("\\."));
         }
       }
@@ -1884,8 +1888,8 @@ public class Metadata {
         filesWithRelativePaths.add(new ParquetFileMetadata_v3(
             relativize(baseDir, file.getPath()), file.length, file.rowGroups));
       }
-      return new ParquetTableMetadata_v3(V3_1, tableMetadataWithAbsolutePaths, filesWithRelativePaths,
-          directoriesWithRelativePaths, DrillVersionInfo.getVersion());
+      return new ParquetTableMetadata_v3(SUPPORTED_VERSIONS.last().toString(), tableMetadataWithAbsolutePaths,
+          filesWithRelativePaths, directoriesWithRelativePaths, DrillVersionInfo.getVersion());
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/MetadataVersion.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/MetadataVersion.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/MetadataVersion.java
index bc6fd70..5ceadcd 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/MetadataVersion.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/MetadataVersion.java
@@ -134,6 +134,13 @@ public class MetadataVersion implements Comparable<MetadataVersion> {
     public static final String V3_1 = "3.1";
 
     /**
+     * Version 3.2: An array with the components of the field name in
+     * {@link Metadata.ColumnTypeMetadata_v3.Key} class is replaced by the SchemaPath.<br>
+     * See DRILL-4264
+     */
+    public static final String V3_2 = "3.2";
+
+    /**
      * All historical versions of the Drill metadata cache files. In case of introducing a new parquet metadata version
      * please follow the {@link MetadataVersion#FORMAT}.
      */
@@ -141,7 +148,8 @@ public class MetadataVersion implements Comparable<MetadataVersion> {
         new MetadataVersion(V1),
         new MetadataVersion(V2),
         new MetadataVersion(V3),
-        new MetadataVersion(V3_1)
+        new MetadataVersion(V3_1),
+        new MetadataVersion(V3_2)
     );
 
     /**

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetRecordWriter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetRecordWriter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetRecordWriter.java
index 1d4d161..9b84e81 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetRecordWriter.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetRecordWriter.java
@@ -199,7 +199,7 @@ public class ParquetRecordWriter extends ParquetOutputRecordWriter {
   private void newSchema() throws IOException {
     List<Type> types = Lists.newArrayList();
     for (MaterializedField field : batchSchema) {
-      if (field.getPath().equalsIgnoreCase(WriterPrel.PARTITION_COMPARATOR_FIELD)) {
+      if (field.getName().equalsIgnoreCase(WriterPrel.PARTITION_COMPARATOR_FIELD)) {
         continue;
       }
       types.add(getType(field));
@@ -230,7 +230,7 @@ public class ParquetRecordWriter extends ParquetOutputRecordWriter {
 
   private PrimitiveType getPrimitiveType(MaterializedField field) {
     MinorType minorType = field.getType().getMinorType();
-    String name = field.getLastName();
+    String name = field.getName();
     PrimitiveTypeName primitiveTypeName = ParquetTypeHelper.getPrimitiveTypeNameForMinorType(minorType);
     Repetition repetition = ParquetTypeHelper.getRepetitionForDataMode(field.getDataMode());
     OriginalType originalType = ParquetTypeHelper.getOriginalTypeForMinorType(minorType);
@@ -248,7 +248,7 @@ public class ParquetRecordWriter extends ParquetOutputRecordWriter {
         for (MaterializedField childField : field.getChildren()) {
           types.add(getType(childField));
         }
-        return new GroupType(dataMode == DataMode.REPEATED ? Repetition.REPEATED : Repetition.OPTIONAL, field.getLastName(), types);
+        return new GroupType(dataMode == DataMode.REPEATED ? Repetition.REPEATED : Repetition.OPTIONAL, field.getName(), types);
       case LIST:
         throw new UnsupportedOperationException("Unsupported type " + minorType);
       default:

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetColumnMetadata.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetColumnMetadata.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetColumnMetadata.java
index bbdf246..d49a416 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetColumnMetadata.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetColumnMetadata.java
@@ -59,12 +59,12 @@ public class ParquetColumnMetadata {
     se = schemaElements.get(column.getPath()[0]);
     type = ParquetToDrillTypeConverter.toMajorType(column.getType(), se.getType_length(),
         getDataMode(column), se, options);
-    field = MaterializedField.create(toFieldName(column.getPath()), type);
+    field = MaterializedField.create(toFieldName(column.getPath()).getLastSegment().getNameSegment().getPath(), type);
     length = getDataTypeLength();
   }
 
-  private String toFieldName(String[] paths) {
-    return SchemaPath.getCompoundPath(paths).getAsUnescapedPath();
+  private SchemaPath toFieldName(String[] paths) {
+    return SchemaPath.getCompoundPath(paths);
   }
 
   private TypeProtos.DataMode getDataMode(ColumnDescriptor column) {

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetSchema.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetSchema.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetSchema.java
index ab4b1b8..9814b53 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetSchema.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetSchema.java
@@ -108,7 +108,6 @@ public class ParquetSchema {
    * Build the schema for this read as a combination of the schema specified in
    * the Parquet footer and the list of columns selected in the query.
    *
-   * @param footer Parquet metadata
    * @param batchSize target size of the batch, in rows
    * @throws Exception if anything goes wrong
    */
@@ -188,7 +187,7 @@ public class ParquetSchema {
   /**
    * Determine if a Parquet field is selected for the query. It is selected
    * either if this is a star query (we want all columns), or the column
-   * appers in the select list.
+   * appears in the select list.
    *
    * @param field the Parquet column expressed as as Drill field.
    * @return true if the column is to be included in the scan, false
@@ -205,7 +204,7 @@ public class ParquetSchema {
 
     int i = 0;
     for (SchemaPath expr : selectedCols) {
-      if ( field.getPath().equalsIgnoreCase(expr.getAsUnescapedPath())) {
+      if (field.getName().equalsIgnoreCase(expr.getRootSegmentPath())) {
         columnsFound[i] = true;
         return true;
       }
@@ -243,8 +242,9 @@ public class ParquetSchema {
    */
 
   private NullableIntVector createMissingColumn(SchemaPath col, OutputMutator output) throws SchemaChangeException {
-    MaterializedField field = MaterializedField.create(col.getAsUnescapedPath(),
-                          Types.optional(TypeProtos.MinorType.INT));
+    // col.toExpr() is used here as field name since we don't want to see these fields in the existing maps
+    MaterializedField field = MaterializedField.create(col.toExpr(),
+                                                    Types.optional(TypeProtos.MinorType.INT));
     return (NullableIntVector) output.addField(field,
               TypeHelper.getValueVectorClass(TypeProtos.MinorType.INT, DataMode.OPTIONAL));
   }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
index 68d3bbb..9e66f6d 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet2/DrillParquetReader.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -208,27 +208,28 @@ public class DrillParquetReader extends AbstractRecordReader {
     try {
       this.operatorContext = context;
       schema = footer.getFileMetaData().getSchema();
-      MessageType projection = null;
+      MessageType projection;
 
       if (isStarQuery()) {
         projection = schema;
       } else {
-        columnsNotFound=new ArrayList<SchemaPath>();
+        columnsNotFound = new ArrayList<>();
         projection = getProjection(schema, getColumns(), columnsNotFound);
-        if(projection == null){
+        if (projection == null) {
             projection = schema;
         }
-        if(columnsNotFound!=null && columnsNotFound.size()>0) {
+        if (columnsNotFound != null && columnsNotFound.size() > 0) {
           nullFilledVectors = new ArrayList<>();
-          for(SchemaPath col: columnsNotFound){
+          for (SchemaPath col: columnsNotFound) {
+            // col.toExpr() is used here as field name since we don't want to see these fields in the existing maps
             nullFilledVectors.add(
-              (NullableIntVector)output.addField(MaterializedField.create(col.getAsUnescapedPath(),
+              (NullableIntVector) output.addField(MaterializedField.create(col.toExpr(),
                   org.apache.drill.common.types.Types.optional(TypeProtos.MinorType.INT)),
                 (Class<? extends ValueVector>) TypeHelper.getValueVectorClass(TypeProtos.MinorType.INT,
                   TypeProtos.DataMode.OPTIONAL)));
           }
-          if(columnsNotFound.size()==getColumns().size()){
-            noColumnsFound=true;
+          if (columnsNotFound.size() == getColumns().size()) {
+            noColumnsFound = true;
           }
         }
       }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
index cb5183e..7e32a4d 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/BatchPrinter.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -34,21 +34,18 @@ import com.google.common.collect.Lists;
 public class BatchPrinter {
   public static void printHyperBatch(VectorAccessible batch, SelectionVector4 sv4) {
     List<String> columns = Lists.newArrayList();
-    List<ValueVector> vectors = Lists.newArrayList();
-    int numBatches = 0;
     for (VectorWrapper vw : batch) {
-      columns.add(vw.getValueVectors()[0].getField().getPath());
-      numBatches = vw.getValueVectors().length;
+      columns.add(vw.getValueVectors()[0].getField().getName());
     }
     int width = columns.size();
     for (int j = 0; j < sv4.getCount(); j++) {
-      if (j%50 == 0) {
+      if (j % 50 == 0) {
         System.out.println(StringUtils.repeat("-", width * 17 + 1));
         for (String column : columns) {
           System.out.printf("| %-15s", width <= 15 ? column : column.substring(0, 14));
         }
         System.out.printf("|\n");
-        System.out.println(StringUtils.repeat("-", width*17 + 1));
+        System.out.println(StringUtils.repeat("-", width * 17 + 1));
       }
       for (VectorWrapper vw : batch) {
         Object o = vw.getValueVectors()[sv4.get(j) >>> 16].getAccessor().getObject(sv4.get(j) & 65535);
@@ -60,7 +57,7 @@ public class BatchPrinter {
         } else {
           value = o.toString();
         }
-        System.out.printf("| %-15s",value.length() <= 15 ? value : value.substring(0,14));
+        System.out.printf("| %-15s", value.length() <= 15 ? value : value.substring(0, 14));
       }
       System.out.printf("|\n");
     }
@@ -71,32 +68,31 @@ public class BatchPrinter {
     List<String> columns = Lists.newArrayList();
     List<ValueVector> vectors = Lists.newArrayList();
     for (VectorWrapper vw : batch) {
-      columns.add(vw.getValueVector().getField().getPath());
+      columns.add(vw.getValueVector().getField().getName());
       vectors.add(vw.getValueVector());
     }
     int width = columns.size();
     int rows = vectors.get(0).getMetadata().getValueCount();
     for (int row = 0; row < rows; row++) {
-      if (row%50 == 0) {
+      if (row % 50 == 0) {
         System.out.println(StringUtils.repeat("-", width * 17 + 1));
         for (String column : columns) {
           System.out.printf("| %-15s", width <= 15 ? column : column.substring(0, 14));
         }
         System.out.printf("|\n");
-        System.out.println(StringUtils.repeat("-", width*17 + 1));
+        System.out.println(StringUtils.repeat("-", width * 17 + 1));
       }
       for (ValueVector vv : vectors) {
         Object o = vv.getAccessor().getObject(row);
         String value;
         if (o == null) {
           value = "null";
-        } else
-        if (o instanceof byte[]) {
+        } else if (o instanceof byte[]) {
           value = new String((byte[]) o);
         } else {
           value = o.toString();
         }
-        System.out.printf("| %-15s",value.length() <= 15 ? value : value.substring(0, 14));
+        System.out.printf("| %-15s", value.length() <= 15 ? value : value.substring(0, 14));
       }
       System.out.printf("|\n");
     }
@@ -106,19 +102,19 @@ public class BatchPrinter {
     List<String> columns = Lists.newArrayList();
     List<ValueVector> vectors = Lists.newArrayList();
     for (VectorWrapper vw : batch) {
-      columns.add(vw.getValueVector().getField().getPath());
+      columns.add(vw.getValueVector().getField().getName());
       vectors.add(vw.getValueVector());
     }
     int width = columns.size();
     int rows = vectors.get(0).getMetadata().getValueCount();
     for (int i = 0; i < rows; i++) {
-      if (i%50 == 0) {
+      if (i % 50 == 0) {
         System.out.println(StringUtils.repeat("-", width * 17 + 1));
         for (String column : columns) {
           System.out.printf("| %-15s", width <= 15 ? column : column.substring(0, 14));
         }
         System.out.printf("|\n");
-        System.out.println(StringUtils.repeat("-", width*17 + 1));
+        System.out.println(StringUtils.repeat("-", width * 17 + 1));
       }
       int row = sv2.getIndex(i);
       for (ValueVector vv : vectors) {
@@ -126,13 +122,12 @@ public class BatchPrinter {
         String value;
         if (o == null) {
           value = "null";
-        } else
-        if (o instanceof byte[]) {
+        } else if (o instanceof byte[]) {
           value = new String((byte[]) o);
         } else {
           value = o.toString();
         }
-        System.out.printf("| %-15s",value.length() <= 15 ? value : value.substring(0, 14));
+        System.out.printf("| %-15s", value.length() <= 15 ? value : value.substring(0, 14));
       }
       System.out.printf("|\n");
     }

http://git-wip-us.apache.org/repos/asf/drill/blob/d105950a/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
----------------------------------------------------------------------
diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java b/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
index b150179..d836bfc 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/util/VectorUtil.java
@@ -1,4 +1,4 @@
-/**
+/*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
@@ -40,12 +40,12 @@ public class VectorUtil {
     System.out.println(rows + " row(s):");
     List<String> columns = Lists.newArrayList();
     for (VectorWrapper<?> vw : va) {
-      columns.add(vw.getValueVector().getField().getPath());
+      columns.add(vw.getValueVector().getField().getName());
     }
 
     int width = columns.size();
     for (String column : columns) {
-      System.out.printf("%s%s",column, column == columns.get(width - 1) ? "\n" : delimiter);
+      System.out.printf("%s%s",column, column.equals(columns.get(width - 1)) ? "\n" : delimiter);
     }
     for (int row = 0; row < rows; row++) {
       int columnCounter = 0;
@@ -54,8 +54,8 @@ public class VectorUtil {
         Object o ;
         try{
           o = vw.getValueVector().getAccessor().getObject(row);
-        }catch(Exception e){
-          throw new RuntimeException("failure while trying to read column " + vw.getField().getPath());
+        } catch (Exception e) {
+          throw new RuntimeException("failure while trying to read column " + vw.getField().getName());
         }
         if (o == null) {
           //null value
@@ -83,7 +83,7 @@ public class VectorUtil {
     if (includeHeader) {
       List<String> columns = Lists.newArrayList();
       for (VectorWrapper<?> vw : va) {
-        columns.add(vw.getValueVector().getField().getPath());
+        columns.add(vw.getValueVector().getField().getName());
       }
 
       formattedResults.append(Joiner.on(delimiter).join(columns));
@@ -134,7 +134,7 @@ public class VectorUtil {
       width += columnWidth + 2;
       formats.add("| %-" + columnWidth + "s");
       MaterializedField field = vw.getValueVector().getField();
-      columns.add(field.getPath() + "<" + field.getType().getMinorType() + "(" + field.getType().getMode() + ")" + ">");
+      columns.add(field.getName() + "<" + field.getType().getMinorType() + "(" + field.getType().getMode() + ")" + ">");
       columnIndex++;
     }