[SPARK-4501][Core] - Create build/mvn to automatically download maven/zinc/scalac

Creates a top level directory script (as `build/mvn`) to automatically download zinc and the specific version of scala used to easily build spark. This will also download and install maven if the user doesn't already have it and all packages are hosted under the `build/` directory. Tested on both Linux and OSX OS's and both work. All commands pass through to the maven binary so it acts exactly as a traditional maven call would.

Author: Brennon York <brennon.york@capitalone.com>

Closes #3707 from brennonyork/SPARK-4501 and squashes the following commits:

0e5a0e4 [Brennon York] minor incorrect doc verbage (with -> this)
9b79e38 [Brennon York] fixed merge conflicts with dev/run-tests, properly quoted args in sbt/sbt, fixed bug where relative paths would fail if passed in from build/mvn
d2d41b6 [Brennon York] added blurb about leverging zinc with build/mvn
b979c58 [Brennon York] updated the merge conflict
c5634de [Brennon York] updated documentation to overview build/mvn, updated all points where sbt/sbt was referenced with build/sbt
b8437ba [Brennon York] set progress bars for curl and wget when not run on jenkins, no progress bar when run on jenkins, moved sbt script to build/sbt, wrote stub and warning under sbt/sbt which calls build/sbt, modified build/sbt to use the correct directory, fixed bug in build/sbt-launch-lib.bash to correctly pull the sbt version
be11317 [Brennon York] added switch to silence download progress only if AMPLAB_JENKINS is set
28d0a99 [Brennon York] updated to remove the python dependency, uses grep instead
7e785a6 [Brennon York] added silent and quiet flags to curl and wget respectively, added single echo output to denote start of a download if download is needed
14a5da0 [Brennon York] removed unnecessary zinc output on startup
1af4a94 [Brennon York] fixed bug with uppercase vs lowercase variable
3e8b9b3 [Brennon York] updated to properly only restart zinc if it was freshly installed
a680d12 [Brennon York] Added comments to functions and tested various mvn calls
bb8cc9d [Brennon York] removed package files
ef017e6 [Brennon York] removed OS complexities, setup generic install_app call, removed extra file complexities, removed help, removed forced install (defaults now), removed double-dash from cli
07bf018 [Brennon York] Updated to specifically handle pulling down the correct scala version
f914dea [Brennon York] Beginning final portions of localized scala home
69c4e44 [Brennon York] working linux and osx installers for purely local mvn build
4a1609c [Brennon York] finalizing working linux install for maven to local ./build/apache-maven folder
cbfcc68 [Brennon York] Changed the default sbt/sbt to build/sbt and added a build/mvn which will automatically download, install, and execute maven with zinc for easier build capability

1 files changed, 12 insertions, 12 deletions

diff --git a/dev/run-tests b/dev/run-tests
index 9192cb7e16..20603fc089 100755
--- a/dev/run-tests
+++ b/dev/run-tests
@@ -59,17 +59,17 @@ export SBT_MAVEN_PROFILES_ARGS="$SBT_MAVEN_PROFILES_ARGS -Pkinesis-asl"
 {
   if test -x "$JAVA_HOME/bin/java"; then
       declare java_cmd="$JAVA_HOME/bin/java"
-  else 
+  else
       declare java_cmd=java
   fi
-  
+
   # We can't use sed -r -e due to OS X / BSD compatibility; hence, all the parentheses.
   JAVA_VERSION=$(
     $java_cmd -version 2>&1 \
     | grep -e "^java version" --max-count=1 \
     | sed "s/java version \"\(.*\)\.\(.*\)\.\(.*\)\"/\1\2/"
   )
-  
+
   if [ "$JAVA_VERSION" -lt 18 ]; then
     echo "[warn] Java 8 tests will not run because JDK version is < 1.8."
   fi
@@ -79,7 +79,7 @@ export SBT_MAVEN_PROFILES_ARGS="$SBT_MAVEN_PROFILES_ARGS -Pkinesis-asl"
 # Partial solution for SPARK-1455.
 if [ -n "$AMPLAB_JENKINS" ]; then
   git fetch origin master:master
-  
+
   sql_diffs=$(
     git diff --name-only master \
     | grep -e "^sql/" -e "^bin/spark-sql" -e "^sbin/start-thriftserver.sh"
@@ -93,7 +93,7 @@ if [ -n "$AMPLAB_JENKINS" ]; then
   if [ -n "$sql_diffs" ]; then
     echo "[info] Detected changes in SQL. Will run Hive test suite."
     _RUN_SQL_TESTS=true
-    
+
     if [ -z "$non_sql_diffs" ]; then
       echo "[info] Detected no changes except in SQL. Will only run SQL tests."
       _SQL_TESTS_ONLY=true
@@ -151,7 +151,7 @@ CURRENT_BLOCK=$BLOCK_BUILD
   HIVE_12_BUILD_ARGS="$SBT_MAVEN_PROFILES_ARGS -Phive -Phive-thriftserver -Phive-0.12.0"
   echo "[info] Compile with Hive 0.12.0"
   echo -e "q\n" \
-    | sbt/sbt $HIVE_12_BUILD_ARGS clean hive/compile hive-thriftserver/compile \
+    | build/sbt $HIVE_12_BUILD_ARGS clean hive/compile hive-thriftserver/compile \
     | grep -v -e "info.*Resolving" -e "warn.*Merging" -e "info.*Including"
 
   # Then build with default Hive version (0.13.1) because tests are based on this version
@@ -160,7 +160,7 @@ CURRENT_BLOCK=$BLOCK_BUILD
   echo "[info] Building Spark with these arguments: $SBT_MAVEN_PROFILES_ARGS"\
     " -Phive -Phive-thriftserver"
   echo -e "q\n" \
-    | sbt/sbt $SBT_MAVEN_PROFILES_ARGS -Phive -Phive-thriftserver package assembly/assembly  \
+    | build/sbt $SBT_MAVEN_PROFILES_ARGS -Phive -Phive-thriftserver package assembly/assembly  \
     | grep -v -e "info.*Resolving" -e "warn.*Merging" -e "info.*Including"
 }
 
@@ -177,7 +177,7 @@ CURRENT_BLOCK=$BLOCK_SPARK_UNIT_TESTS
   if [ -n "$_RUN_SQL_TESTS" ]; then
     SBT_MAVEN_PROFILES_ARGS="$SBT_MAVEN_PROFILES_ARGS -Phive -Phive-thriftserver"
   fi
-  
+
   if [ -n "$_SQL_TESTS_ONLY" ]; then
     # This must be an array of individual arguments. Otherwise, having one long string
     # will be interpreted as a single test, which doesn't work.
@@ -185,19 +185,19 @@ CURRENT_BLOCK=$BLOCK_SPARK_UNIT_TESTS
   else
     SBT_MAVEN_TEST_ARGS=("test")
   fi
-  
+
   echo "[info] Running Spark tests with these arguments: $SBT_MAVEN_PROFILES_ARGS ${SBT_MAVEN_TEST_ARGS[@]}"
-  
+
   # NOTE: echo "q" is needed because sbt on encountering a build file with failure
   # (either resolution or compilation) prompts the user for input either q, r, etc
   # to quit or retry. This echo is there to make it not block.
-  # NOTE: Do not quote $SBT_MAVEN_PROFILES_ARGS or else it will be interpreted as a 
+  # NOTE: Do not quote $SBT_MAVEN_PROFILES_ARGS or else it will be interpreted as a
   # single argument!
   # "${SBT_MAVEN_TEST_ARGS[@]}" is cool because it's an array.
   # QUESTION: Why doesn't 'yes "q"' work?
   # QUESTION: Why doesn't 'grep -v -e "^\[info\] Resolving"' work?
   echo -e "q\n" \
-    | sbt/sbt $SBT_MAVEN_PROFILES_ARGS "${SBT_MAVEN_TEST_ARGS[@]}" \
+    | build/sbt $SBT_MAVEN_PROFILES_ARGS "${SBT_MAVEN_TEST_ARGS[@]}" \
     | grep -v -e "info.*Resolving" -e "warn.*Merging" -e "info.*Including"
 }