Merge pull request #565 from pwendell/dev-scripts. Closes #565.

SPARK-1066: Add developer scripts to repository.

These are some developer scripts I've been maintaining in a separate public repo. This patch adds them to the Spark repository so they can evolve here and are clearly accessible to all committers.

I may do some small additional clean-up in this PR, but wanted to put them here in case others want to review. There are a few types of scripts here:

1. A tool to merge pull requests.
2. A script for packaging releases.
3. A script for auditing release candidates.

Author: Patrick Wendell <pwendell@gmail.com>

== Merge branch commits ==

commit 5d5d331d01f6fd59c2eb830f652955119b012173
Author: Patrick Wendell <pwendell@gmail.com>
Date:   Sat Feb 8 22:11:47 2014 -0800

    SPARK-1066: Add developer scripts to repository.

1 files changed, 132 insertions, 0 deletions

diff --git a/dev/create-release/create-release.sh b/dev/create-release/create-release.sh
new file mode 100755
index 0000000000..7cebace506
--- /dev/null
+++ b/dev/create-release/create-release.sh
@@ -0,0 +1,132 @@
+#!/usr/bin/env bash
+
+#
+# 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.
+#
+
+# Quick-and-dirty automation of making maven and binary releases. Not robust at all.
+# Publishes releases to Maven and packages/copies binary release artifacts.
+# Expects to be run in a totally empty directory.
+#
+# Would be nice to add:
+#  - Send output to stderr and have useful logging in stdout
+#  - Have this use sbt rather than Maven release plug in
+
+GIT_USERNAME=pwendell
+GIT_PASSWORD=XXX
+GPG_PASSPHRASE=XXX
+GIT_BRANCH=branch-0.9
+RELEASE_VERSION=0.9.0-incubating
+RC_NAME=rc2
+USER_NAME=pwendell
+
+set -e
+
+GIT_TAG=v$RELEASE_VERSION
+
+# Artifact publishing
+
+git clone https://git-wip-us.apache.org/repos/asf/incubator-spark.git -b $GIT_BRANCH
+cd incubator-spark
+export MAVEN_OPTS="-Xmx3g -XX:MaxPermSize=1g -XX:ReservedCodeCacheSize=1g"
+
+mvn -Pyarn release:clean
+
+mvn -DskipTests \
+  -Darguments="-DskipTests=true -Dhadoop.version=2.2.0 -Dyarn.version=2.2.0 -Dgpg.passphrase=${GPG_PASSPHRASE}" \
+  -Dusername=$GIT_USERNAME -Dpassword=$GIT_PASSWORD \
+  -Dhadoop.version=2.2.0 -Dyarn.version=2.2.0 \
+  -Pyarn \
+  -Dtag=$GIT_TAG -DautoVersionSubmodules=true \
+  --batch-mode release:prepare
+
+mvn -DskipTests \
+  -Darguments="-DskipTests=true -Dhadoop.version=2.2.0 -Dyarn.version=2.2.0 -Dgpg.passphrase=${GPG_PASSPHRASE}" \
+  -Dhadoop.version=2.2.0 -Dyarn.version=2.2.0 \
+  -Pyarn \
+  release:perform
+
+rm -rf incubator-spark
+
+# Source and binary tarballs
+git clone https://git-wip-us.apache.org/repos/asf/incubator-spark.git
+cd incubator-spark
+git checkout --force $GIT_TAG
+release_hash=`git rev-parse HEAD`
+
+rm .gitignore
+rm -rf .git
+cd ..
+
+cp -r incubator-spark spark-$RELEASE_VERSION
+tar cvzf spark-$RELEASE_VERSION.tgz spark-$RELEASE_VERSION
+echo $GPG_PASSPHRASE | gpg --passphrase-fd 0 --armour --output spark-$RELEASE_VERSION.tgz.asc \
+  --detach-sig spark-$RELEASE_VERSION.tgz
+echo $GPG_PASSPHRASE | gpg --passphrase-fd 0 --print-md MD5 spark-$RELEASE_VERSION.tgz > \
+  spark-$RELEASE_VERSION.tgz.md5
+echo $GPG_PASSPHRASE | gpg --passphrase-fd 0 --print-md SHA512 spark-$RELEASE_VERSION.tgz > \
+  spark-$RELEASE_VERSION.tgz.sha
+rm -rf spark-$RELEASE_VERSION
+
+make_binary_release() {
+  NAME=$1
+  MAVEN_FLAGS=$2
+
+  cp -r incubator-spark spark-$RELEASE_VERSION-bin-$NAME
+  cd spark-$RELEASE_VERSION-bin-$NAME
+  export MAVEN_OPTS="-Xmx3g -XX:MaxPermSize=1g -XX:ReservedCodeCacheSize=1g"
+  mvn $MAVEN_FLAGS -DskipTests clean package
+  find . -name test-classes -type d | xargs rm -rf
+  find . -name classes -type d | xargs rm -rf
+  cd ..
+  tar cvzf spark-$RELEASE_VERSION-bin-$NAME.tgz spark-$RELEASE_VERSION-bin-$NAME
+  echo $GPG_PASSPHRASE | gpg --passphrase-fd 0 --armour \
+    --output spark-$RELEASE_VERSION-bin-$NAME.tgz.asc \
+    --detach-sig spark-$RELEASE_VERSION-bin-$NAME.tgz
+  echo $GPG_PASSPHRASE | gpg --passphrase-fd 0 --print-md \
+    MD5 spark-$RELEASE_VERSION-bin-$NAME.tgz > \
+    spark-$RELEASE_VERSION-bin-$NAME.tgz.md5
+  echo $GPG_PASSPHRASE | gpg --passphrase-fd 0 --print-md \
+    SHA512 spark-$RELEASE_VERSION-bin-$NAME.tgz > \
+    spark-$RELEASE_VERSION-bin-$NAME.tgz.sha
+  rm -rf spark-$RELEASE_VERSION-bin-$NAME
+}
+
+make_binary_release "hadoop1"  "-Dhadoop.version=1.0.4"
+make_binary_release "cdh4"     "-Dhadoop.version=2.0.0-mr1-cdh4.2.0"
+make_binary_release "hadoop2"  "-Pyarn -Dhadoop.version=2.2.0 -Dyarn.version=2.2.0"
+
+# Copy data
+echo "Copying release tarballs"
+ssh $USER_NAME@people.apache.org \
+  mkdir /home/$USER_NAME/public_html/spark-$RELEASE_VERSION-$RC_NAME
+rc_folder=spark-$RELEASE_VERSION-$RC_NAME
+scp spark* \
+  $USER_NAME@people.apache.org:/home/$USER_NAME/public_html/$rc_folder/
+
+# Docs
+cd incubator-spark
+cd docs
+jekyll build
+echo "Copying release documentation"
+rc_docs_folder=${rc_folder}-docs
+rsync -r _site/* $USER_NAME@people.apache.org /home/$USER_NAME/public_html/$rc_docs_folder
+
+echo "Release $RELEASE_VERSION completed:"
+echo "Git tag:\t $GIT_TAG"
+echo "Release commit:\t $release_hash"
+echo "Binary location:\t http://people.apache.org/~$USER_NAME/$rc_folder"
+echo "Doc location:\t http://people.apache.org/~$USER_NAME/$rc_docs_folder"