when colum is use alias ,the order by result is wrong

.github/PULL_REQUEST_TEMPLATE

@@ -0,0 +1,10 @@
+## What changes were proposed in this pull request?
+
+(Please fill in changes proposed in this fix)
+
+## How was this patch tested?
+
+(Please explain how this patch was tested. E.g. unit tests, integration tests, manual tests)
+(If this patch involves UI changes, please attach a screenshot; otherwise, remove this)
+
+Please review http://spark.apache.org/contributing.html before opening a pull request.

.gitignore

@@ -1,76 +1,90 @@
-*~
-*.#*
 *#*#
-*.swp
-*.ipr
+*.#*
 *.iml
+*.ipr
 *.iws
 *.pyc
 *.pyo
+*.swp
+*~
+.DS_Store
+.cache
+.classpath
+.ensime
+.ensime_cache/
+.ensime_lucene
+.generated-mima*
 .idea/
 .idea_modules/
-build/*.jar
+.project
+.pydevproject
+.scala_dependencies
 .settings
-.cache
-cache
-.generated-mima*
-work/
-out/
-.DS_Store
-third_party/libmesos.so
-third_party/libmesos.dylib
+/lib/
+R-unit-tests.log
+R/unit-tests.out
+R/cran-check.out
+R/pkg/vignettes/sparkr-vignettes.html
+build/*.jar
 build/apache-maven*
-build/zinc*
 build/scala*
-conf/java-opts
-conf/*.sh
+build/zinc*
+cache
+checkpoint
 conf/*.cmd
-conf/*.properties
 conf/*.conf
+conf/*.properties
+conf/*.sh
 conf/*.xml
+conf/java-opts
 conf/slaves
+dependency-reduced-pom.xml
+derby.log
+dev/create-release/*final
+dev/create-release/*txt
+dev/pr-deps/
+dist/
 docs/_site
 docs/api
-target/
-reports/
-.project
-.classpath
-.scala_dependencies
 lib_managed/
-src_managed/
+lint-r-report.log
+log/
+logs/
+out/
 project/boot/
-project/plugins/project/build.properties
 project/build/target/
-project/plugins/target/
 project/plugins/lib_managed/
+project/plugins/project/build.properties
 project/plugins/src_managed/
-logs/
-log/
+project/plugins/target/
+python/lib/pyspark.zip
+python/deps
+python/pyspark/python
+reports/
+scalastyle-on-compile.generated.xml
+scalastyle-output.xml
+scalastyle.txt
+spark-*-bin-*.tgz
 spark-tests.log
+src_managed/
 streaming-tests.log
-dependency-reduced-pom.xml
-.ensime
-.ensime_lucene
-checkpoint
-derby.log
-dist/
-dev/create-release/*txt
-dev/create-release/*final
-spark-*-bin-*.tgz
+target/
 unit-tests.log
-/lib/
-ec2/lib/
-rat-results.txt
-scalastyle.txt
-scalastyle-output.xml
-R-unit-tests.log
-R/unit-tests.out
-python/lib/pyspark.zip
-lint-r-report.log
+work/
 
 # For Hive
-metastore_db/
-metastore/
-warehouse/
 TempStatsStore/
+metastore/
+metastore_db/
 sql/hive-thriftserver/test_warehouses
+warehouse/
+spark-warehouse/
+
+# For R session data
+.RData
+.RHistory
+.Rhistory
+*.Rproj
+*.Rproj.*
+
+.Rproj.user

.travis.yml

@@ -0,0 +1,51 @@
+# 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.
+
+# Spark provides this Travis CI configuration file to help contributors
+# check Scala/Java style conformance and JDK7/8 compilation easily
+# during their preparing pull requests.
+#   - Scalastyle is executed during `maven install` implicitly.
+#   - Java Checkstyle is executed by `lint-java`.
+# See the related discussion here.
+# https://github.com/apache/spark/pull/12980
+
+# 1. Choose OS (Ubuntu 14.04.3 LTS Server Edition 64bit, ~2 CORE, 7.5GB RAM)
+sudo: required
+dist: trusty
+
+# 2. Choose language and target JDKs for parallel builds.
+language: java
+jdk:
+  - oraclejdk7
+  - oraclejdk8
+
+# 3. Setup cache directory for SBT and Maven.
+cache:
+  directories:
+  - $HOME/.sbt
+  - $HOME/.m2
+
+# 4. Turn off notifications.
+notifications:
+  email: false
+
+# 5. Run maven install before running lint-java.
+install:
+  - export MAVEN_SKIP_RC=1
+  - build/mvn -T 4 -q -DskipTests -Pmesos -Pyarn -Pkinesis-asl -Phive -Phive-thriftserver install
+
+# 6. Run lint-java.
+script:
+  - dev/lint-java

CONTRIBUTING.md

@@ -1,12 +1,12 @@
 ## Contributing to Spark
 
 *Before opening a pull request*, review the 
-[Contributing to Spark wiki](https://cwiki.apache.org/confluence/display/SPARK/Contributing+to+Spark). 
+[Contributing to Spark guide](http://spark.apache.org/contributing.html). 
 It lists steps that are required before creating a PR. In particular, consider:
 
 - Is the change important and ready enough to ask the community to spend time reviewing?
 - Have you searched for existing, related JIRAs and pull requests?
-- Is this a new feature that can stand alone as a package on http://spark-packages.org ?
+- Is this a new feature that can stand alone as a [third party project](http://spark.apache.org/third-party-projects.html) ?
 - Is the change being proposed clearly explained and motivated?
 
 When you contribute code, you affirm that the contribution is your original work and that you 

LICENSE

@@ -1,4 +1,3 @@
-
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
@@ -237,9 +236,9 @@ The following components are provided under a BSD-style license. See project lin
 The text of each license is also included at licenses/LICENSE-[project].txt.
 
      (BSD 3 Clause) netlib core (com.github.fommil.netlib:core:1.1.2 - https://github.com/fommil/netlib-java/core)
-     (BSD 3 Clause) JPMML-Model (org.jpmml:pmml-model:1.1.15 - https://github.com/jpmml/jpmml-model)
-     (BSD 3-clause style license) jblas (org.jblas:jblas:1.2.4 - http://jblas.org/)
+     (BSD 3 Clause) JPMML-Model (org.jpmml:pmml-model:1.2.7 - https://github.com/jpmml/jpmml-model)
      (BSD License) AntLR Parser Generator (antlr:antlr:2.7.7 - http://www.antlr.org/)
+     (BSD License) ANTLR 4.5.2-1 (org.antlr:antlr4:4.5.2-1 - http://wwww.antlr.org/)
      (BSD licence) ANTLR ST4 4.0.4 (org.antlr:ST4:4.0.4 - http://www.stringtemplate.org)
      (BSD licence) ANTLR StringTemplate (org.antlr:stringtemplate:3.2.1 - http://www.stringtemplate.org)
      (BSD License) Javolution (javolution:javolution:5.5.1 - http://javolution.org)
@@ -250,22 +249,21 @@ The text of each license is also included at licenses/LICENSE-[project].txt.
         (Interpreter classes (all .scala files in repl/src/main/scala
         except for Main.Scala, SparkHelper.scala and ExecutorClassLoader.scala),
         and for SerializableMapWrapper in JavaUtils.scala)
-     (BSD-like) Scala Actors library (org.scala-lang:scala-actors:2.10.5 - http://www.scala-lang.org/)
-     (BSD-like) Scala Compiler (org.scala-lang:scala-compiler:2.10.5 - http://www.scala-lang.org/)
-     (BSD-like) Scala Compiler (org.scala-lang:scala-reflect:2.10.5 - http://www.scala-lang.org/)
-     (BSD-like) Scala Library (org.scala-lang:scala-library:2.10.5 - http://www.scala-lang.org/)
-     (BSD-like) Scalap (org.scala-lang:scalap:2.10.5 - http://www.scala-lang.org/)
-     (BSD-style) scalacheck (org.scalacheck:scalacheck_2.10:1.10.0 - http://www.scalacheck.org)
-     (BSD-style) spire (org.spire-math:spire_2.10:0.7.1 - http://spire-math.org)
-     (BSD-style) spire-macros (org.spire-math:spire-macros_2.10:0.7.1 - http://spire-math.org)
-     (New BSD License) Kryo (com.esotericsoftware.kryo:kryo:2.21 - http://code.google.com/p/kryo/)
-     (New BSD License) MinLog (com.esotericsoftware.minlog:minlog:1.2 - http://code.google.com/p/minlog/)
-     (New BSD License) ReflectASM (com.esotericsoftware.reflectasm:reflectasm:1.07 - http://code.google.com/p/reflectasm/)
+     (BSD-like) Scala Actors library (org.scala-lang:scala-actors:2.11.7 - http://www.scala-lang.org/)
+     (BSD-like) Scala Compiler (org.scala-lang:scala-compiler:2.11.7 - http://www.scala-lang.org/)
+     (BSD-like) Scala Compiler (org.scala-lang:scala-reflect:2.11.7 - http://www.scala-lang.org/)
+     (BSD-like) Scala Library (org.scala-lang:scala-library:2.11.7 - http://www.scala-lang.org/)
+     (BSD-like) Scalap (org.scala-lang:scalap:2.11.7 - http://www.scala-lang.org/)
+     (BSD-style) scalacheck (org.scalacheck:scalacheck_2.11:1.10.0 - http://www.scalacheck.org)
+     (BSD-style) spire (org.spire-math:spire_2.11:0.7.1 - http://spire-math.org)
+     (BSD-style) spire-macros (org.spire-math:spire-macros_2.11:0.7.1 - http://spire-math.org)
+     (New BSD License) Kryo (com.esotericsoftware:kryo:3.0.3 - https://github.com/EsotericSoftware/kryo)
+     (New BSD License) MinLog (com.esotericsoftware:minlog:1.3.0 - https://github.com/EsotericSoftware/minlog)
      (New BSD license) Protocol Buffer Java API (com.google.protobuf:protobuf-java:2.5.0 - http://code.google.com/p/protobuf)
      (New BSD license) Protocol Buffer Java API (org.spark-project.protobuf:protobuf-java:2.4.1-shaded - http://code.google.com/p/protobuf)
      (The BSD License) Fortran to Java ARPACK (net.sourceforge.f2j:arpack_combined_all:0.1 - http://f2j.sourceforge.net)
      (The BSD License) xmlenc Library (xmlenc:xmlenc:0.52 - http://xmlenc.sourceforge.net)
-     (The New BSD License) Py4J (net.sf.py4j:py4j:0.9 - http://py4j.sourceforge.net/)
+     (The New BSD License) Py4J (net.sf.py4j:py4j:0.10.4 - http://py4j.sourceforge.net/)
      (Two-clause BSD-style license) JUnit-Interface (com.novocode:junit-interface:0.10 - http://github.com/szeiger/junit-interface/)
      (BSD licence) sbt and sbt-launch-lib.bash
      (BSD 3 Clause) d3.min.js (https://github.com/mbostock/d3/blob/master/LICENSE)
@@ -284,11 +282,18 @@ The text of each license is also included at licenses/LICENSE-[project].txt.
      (MIT License) SLF4J API Module (org.slf4j:slf4j-api:1.7.5 - http://www.slf4j.org)
      (MIT License) SLF4J LOG4J-12 Binding (org.slf4j:slf4j-log4j12:1.7.5 - http://www.slf4j.org)
      (MIT License) pyrolite (org.spark-project:pyrolite:2.0.1 - http://pythonhosted.org/Pyro4/)
-     (MIT License) scopt (com.github.scopt:scopt_2.10:3.2.0 - https://github.com/scopt/scopt)
+     (MIT License) scopt (com.github.scopt:scopt_2.11:3.2.0 - https://github.com/scopt/scopt)
      (The MIT License) Mockito (org.mockito:mockito-core:1.9.5 - http://www.mockito.org)
      (MIT License) jquery (https://jquery.org/license/)
      (MIT License) AnchorJS (https://github.com/bryanbraun/anchorjs)
      (MIT License) graphlib-dot (https://github.com/cpettitt/graphlib-dot)
      (MIT License) dagre-d3 (https://github.com/cpettitt/dagre-d3)
      (MIT License) sorttable (https://github.com/stuartlangridge/sorttable)
      (MIT License) boto (https://github.com/boto/boto/blob/develop/LICENSE)
+     (MIT License) datatables (http://datatables.net/license)
+     (MIT License) mustache (https://github.com/mustache/mustache/blob/master/LICENSE)
+     (MIT License) cookies (http://code.google.com/p/cookies/wiki/License)
+     (MIT License) blockUI (http://jquery.malsup.com/block/)
+     (MIT License) RowsGroup (http://datatables.net/license/mit)
+     (MIT License) jsonFormatter (http://www.jqueryscript.net/other/jQuery-Plugin-For-Pretty-JSON-Formatting-jsonFormatter.html)
+     (MIT License) modernizr (https://github.com/Modernizr/Modernizr/blob/master/LICENSE)