diff --git a/lib/Doctrine/ORM/Internal/Hydration/HydrationException.php b/lib/Doctrine/ORM/Internal/Hydration/HydrationException.php
index 147f6acae..2acc33225 100644
--- a/lib/Doctrine/ORM/Internal/Hydration/HydrationException.php
+++ b/lib/Doctrine/ORM/Internal/Hydration/HydrationException.php
@@ -23,4 +23,34 @@ class HydrationException extends \Doctrine\ORM\ORMException
             "discriminator value in a table row."
         );
     }
+
+    /**
+     * @since 2.3
+     * @param   string $entityName
+     * @param   string $discrColumnName
+     * @param   string $dqlAlias
+     * @return  HydrationException
+     */
+    public static function missingDiscriminatorColumn($entityName, $discrColumnName, $dqlAlias)
+    {
+        return new self(sprintf(
+            'The discriminator column "%s" is missing for "%s" using the DQL alias "%s".',
+            $discrColumnName, $entityName, $dqlAlias
+        ));
+    }
+
+    /**
+     * @since 2.3
+     * @param   string $entityName
+     * @param   string $discrColumnName
+     * @param   string $dqlAlias
+     * @return  HydrationException
+     */
+    public static function missingDiscriminatorMetaMappingColumn($entityName, $discrColumnName, $dqlAlias)
+    {
+        return new self(sprintf(
+            'The meta mapping for the discriminator column "%s" is missing for "%s" using the DQL alias "%s".',
+            $discrColumnName, $entityName, $dqlAlias
+        ));
+    }
 }
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php b/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
index 1453aab3e..52de2c159 100644
--- a/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
+++ b/lib/Doctrine/ORM/Internal/Hydration/ObjectHydrator.php
@@ -217,8 +217,17 @@ class ObjectHydrator extends AbstractHydrator
         $className = $this->_rsm->aliasMap[$dqlAlias];
 
         if (isset($this->_rsm->discriminatorColumns[$dqlAlias])) {
+
+            if ( ! isset($this->_rsm->metaMappings[$this->_rsm->discriminatorColumns[$dqlAlias]])) {
+                throw HydrationException::missingDiscriminatorMetaMappingColumn($className, $this->_rsm->discriminatorColumns[$dqlAlias], $dqlAlias);
+            }
+
             $discrColumn = $this->_rsm->metaMappings[$this->_rsm->discriminatorColumns[$dqlAlias]];
 
+            if ( ! isset($data[$discrColumn])) {
+                throw HydrationException::missingDiscriminatorColumn($className, $discrColumn, $dqlAlias);
+            }
+
             if ($data[$discrColumn] === "") {
                 throw HydrationException::emptyDiscriminatorValue($dqlAlias);
             }
@@ -330,7 +339,7 @@ class ObjectHydrator extends AbstractHydrator
                 $path = $parentAlias . '.' . $dqlAlias;
 
                 // We have a RIGHT JOIN result here. Doctrine cannot hydrate RIGHT JOIN Object-Graphs
-                if (!isset($nonemptyComponents[$parentAlias])) {
+                if ( ! isset($nonemptyComponents[$parentAlias])) {
                     // TODO: Add special case code where we hydrate the right join objects into identity map at least
                     continue;
                 }
diff --git a/lib/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php b/lib/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php
index 09c2c7f3d..4dc558441 100644
--- a/lib/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php
+++ b/lib/Doctrine/ORM/Internal/Hydration/SimpleObjectHydrator.php
@@ -92,6 +92,10 @@ class SimpleObjectHydrator extends AbstractHydrator
         if ($this->class->inheritanceType !== ClassMetadata::INHERITANCE_TYPE_NONE) {
             $discrColumnName = $this->_platform->getSQLResultCasing($this->class->discriminatorColumn['name']);
 
+            if ( ! isset($sqlResult[$discrColumnName])) {
+                throw HydrationException::missingDiscriminatorColumn($entityName, $discrColumnName, key($this->_rsm->aliasMap));
+            }
+
             if ($sqlResult[$discrColumnName] === '') {
                 throw HydrationException::emptyDiscriminatorValue(key($this->_rsm->aliasMap));
             }
diff --git a/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php b/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php
index b6bc7cd38..33636b4ec 100644
--- a/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php
+++ b/tests/Doctrine/Tests/ORM/Hydration/ObjectHydratorTest.php
@@ -1863,4 +1863,69 @@ class ObjectHydratorTest extends HydrationTestCase
             $result
         );
     }
+
+
+    /**
+     * @group DDC-1470
+     *
+     * @expectedException \Doctrine\ORM\Internal\Hydration\HydrationException
+     * @expectedExceptionMessage The meta mapping for the discriminator column "c_discr" is missing for "Doctrine\Tests\Models\Company\CompanyFixContract" using the DQL alias "c".
+     */
+    public function testMissingMetaMappingException()
+    {
+        $rsm = new ResultSetMapping;
+
+        $rsm->addEntityResult('Doctrine\Tests\Models\Company\CompanyFixContract', 'c');
+        $rsm->addJoinedEntityResult('Doctrine\Tests\Models\Company\CompanyEmployee', 'e', 'c', 'salesPerson');
+
+        $rsm->addFieldResult('c', 'c__id', 'id');
+        $rsm->setDiscriminatorColumn('c', 'c_discr');
+
+        $resultSet = array(
+              array(
+                  'c__id'   => '1',
+                  'c_discr' => 'fix',
+              ),
+         );
+
+        $stmt     = new HydratorMockStatement($resultSet);
+        $hydrator = new \Doctrine\ORM\Internal\Hydration\ObjectHydrator($this->_em);
+        $hydrator->hydrateAll($stmt, $rsm);
+    }
+
+    /**
+     * @group DDC-1470
+     *
+     * @expectedException \Doctrine\ORM\Internal\Hydration\HydrationException
+     * @expectedExceptionMessage The discriminator column "discr" is missing for "Doctrine\Tests\Models\Company\CompanyEmployee" using the DQL alias "e".
+     */
+    public function testMissingDiscriminatorColumnException()
+    {
+        $rsm = new ResultSetMapping;
+
+        $rsm->addEntityResult('Doctrine\Tests\Models\Company\CompanyFixContract', 'c');
+        $rsm->addJoinedEntityResult('Doctrine\Tests\Models\Company\CompanyEmployee', 'e', 'c', 'salesPerson');
+
+        $rsm->addFieldResult('c', 'c__id', 'id');
+        $rsm->addMetaResult('c', 'c_discr', 'discr');
+        $rsm->setDiscriminatorColumn('c', 'c_discr');
+
+        $rsm->addFieldResult('e', 'e__id', 'id');
+        $rsm->addFieldResult('e', 'e__name', 'name');
+        $rsm->addMetaResult('e ', 'e_discr', 'discr');
+        $rsm->setDiscriminatorColumn('e', 'e_discr');
+
+        $resultSet = array(
+              array(
+                  'c__id'   => '1',
+                  'c_discr' => 'fix',
+                  'e__id'   => '1',
+                  'e__name' => 'Fabio B. Silva'
+              ),
+         );
+
+        $stmt     = new HydratorMockStatement($resultSet);
+        $hydrator = new \Doctrine\ORM\Internal\Hydration\ObjectHydrator($this->_em);
+        $hydrator->hydrateAll($stmt, $rsm);
+    }
 }
diff --git a/tests/Doctrine/Tests/ORM/Hydration/SimpleObjectHydratorTest.php b/tests/Doctrine/Tests/ORM/Hydration/SimpleObjectHydratorTest.php
new file mode 100644
index 000000000..80f90e7ff
--- /dev/null
+++ b/tests/Doctrine/Tests/ORM/Hydration/SimpleObjectHydratorTest.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Hydration;
+
+use Doctrine\Tests\Mocks\HydratorMockStatement;
+use Doctrine\ORM\Query\ResultSetMapping;
+
+require_once __DIR__ . '/../../TestInit.php';
+
+class SimpleObjectHydratorTest extends HydrationTestCase
+{
+    /**
+     * @group DDC-1470
+     *
+     * @expectedException \Doctrine\ORM\Internal\Hydration\HydrationException
+     * @expectedExceptionMessage The discriminator column "discr" is missing for "Doctrine\Tests\Models\Company\CompanyPerson" using the DQL alias "p".
+     */
+    public function testMissingDiscriminatorColumnException()
+    {
+        $rsm = new ResultSetMapping;
+        $rsm->addEntityResult('Doctrine\Tests\Models\Company\CompanyPerson', 'p');
+        $rsm->addFieldResult('p', 'p__id', 'id');
+        $rsm->addFieldResult('p', 'p__name', 'name');
+        $rsm->addMetaResult('p ', 'discr', 'discr');
+        $rsm->setDiscriminatorColumn('p', 'discr');
+        $resultSet = array(
+              array(
+                  'u__id'   => '1',
+                  'u__name' => 'Fabio B. Silva'
+              ),
+         );
+
+        $stmt       = new HydratorMockStatement($resultSet);
+        $hydrator   = new \Doctrine\ORM\Internal\Hydration\SimpleObjectHydrator($this->_em);
+        $hydrator->hydrateAll($stmt, $rsm);
+    }
+}