Refactor Travis CI to support multiple Java Builds

* Moved mapred-site and yarn-site xml files to a created a folder that contains the artifacts for
either hadoop 2.6 or 3.2, those will be pickd up depending on the testing
needs in travis.yml

* Moved spark-env file to a created a folder that contains the artifacts for
either spark1.6 or 2.4, those will be pickd up depending on the testing
needs in travis.yml

* Created hadoop-env.sh file for Hadoop 3.2 to store required
environment variables to start hdfs and yarn services.

* Removed harcoded values from haddop.conf and spark.conf, this will be
filled up depending on the testing needs.

* Added an `install_hadoop_spark` script that will download hadoop and spark
binaries depending on the testing needs.

* Added a `config_hadoop_spark` script that will setup hadoop, spark and
hibench depending on the testing needs.

* Added a `jdk_ver` script to pick up the current java version installed for
travis CI.

* `restart_hadoop_spark` script modified to be agnostic to the required
binaries for testing.

* travis/config_hadoop_spark.sh:
	* for Java 8 and 11 skiping `sql` test since HIVE is no longer
used to perform queries. Newer Spark version perform queries using
`SparkSession` no longer used `import org.apache.spark.sql`

* .travis.yml:
	* Added `dist: trusty` to keep using this distro, Travis picks
up xenial if not especified.. If Any
greather Ubuntu version required in Travis won't support openjdk 7.
	* Refactored the CI flow to behave, download, setup, run and
test hadoop and spark depending on the jdk required either versions 7, 8 and
11.
	* Hibench will be configured depending on the jdk required
either versions 7, 8 and 11.
	* Hibench will be built depending on the jdk required
either versions 7, 8 and 11.
	* benchmarks will be run for all jdk versions set.

Signed-off-by: Luis Ponce <luis.f.ponce.navarro@linux.intel.com>

Author: luisfponce

.travis.yml

@@ -1,6 +1,9 @@
+dist: trusty
 sudo: required
 language: java
 jdk:
+  - openjdk11
+  - openjdk8
   - openjdk7
 before_install:
   - cat /etc/hosts # optionally check the content *before*
@@ -10,32 +13,50 @@ before_install:
   - cat /proc/cpuinfo | grep cores | wc -l
   - free -h
 install:
-  - hibench=$(pwd)
-  - cd /opt/
-  - wget http://d3kbcqa49mib13.cloudfront.net/spark-1.6.0-bin-hadoop2.6.tgz
-  - tar -xzf spark-1.6.0-bin-hadoop2.6.tgz
-  - wget https://archive.apache.org/dist/hadoop/core/hadoop-2.6.5/hadoop-2.6.5.tar.gz
-  - tar -xzf hadoop-2.6.5.tar.gz
-  - cd ${hibench}
-  - cp ./travis/spark-env.sh /opt/spark-1.6.0-bin-hadoop2.6/conf/
-  - cp ./travis/core-site.xml /opt/hadoop-2.6.5/etc/hadoop/
-  - cp ./travis/hdfs-site.xml /opt/hadoop-2.6.5/etc/hadoop/
-  - cp ./travis/mapred-site.xml /opt/hadoop-2.6.5/etc/hadoop/
-  - cp ./travis/yarn-site.xml /opt/hadoop-2.6.5/etc/hadoop/
-  - cp ./travis/hibench.conf ./conf/
-  - cp ./travis/benchmarks.lst ./conf/
+  - |
+    export java_ver=$(./travis/jdk_ver.sh)
+    if [[ "$java_ver" == 11 ]]; then
+        export HADOOP_VER=3.2.0
+        export SPARK_VER=2.4.3
+        export SPARK_PACKAGE_TYPE=without-hadoop-scala-2.12
+    elif [[ "$java_ver" == 8 ]]; then
+        export HADOOP_VER=3.2.0
+        export SPARK_VER=2.4.3
+        export SPARK_PACKAGE_TYPE=without-hadoop
+    elif [[ "$java_ver" == 7 ]]; then
+        export HADOOP_VER=2.6.5
+        export SPARK_VER=1.6.0
+        export SPARK_PACKAGE_TYPE=hadoop2.6
+    else
+        exit 1
+    fi
+
+    # Folders where are stored Spark and Hadoop depending on version required
+    export SPARK_BINARIES_FOLDER=spark-$SPARK_VER-bin-$SPARK_PACKAGE_TYPE
+    export HADOOP_BINARIES_FOLDER=hadoop-$HADOOP_VER
+    export HADOOP_CONF_DIR=/opt/$HADOOP_BINARIES_FOLDER/etc/hadoop/
+
+    sudo -E ./travis/install_hadoop_spark.sh
+    sudo -E ./travis/config_hadoop_spark.sh
 before_script:
   - "export JAVA_OPTS=-Xmx512m"
 cache:
   directories:
   - $HOME/.m2
 script:
-  - mvn clean package -q -Dmaven.javadoc.skip=true -Dspark=2.2 -Dscala=2.11
-  - mvn clean package -q -Dmaven.javadoc.skip=true -Dspark=2.0 -Dscala=2.11
-  - mvn clean package -q -Dmaven.javadoc.skip=true -Dspark=1.6 -Dscala=2.10
-  - sudo -E ./travis/configssh.sh
-  - sudo -E ./travis/restart_hadoop_spark.sh
-  - cp ./travis/hadoop.conf ./conf/
-  - cp ./travis/spark.conf ./conf/
-  - /opt/hadoop-2.6.5/bin/yarn node -list 2
-  - sudo -E ./bin/run_all.sh
+  - |
+    if [[ "$java_ver" == 11 ]]; then
+        mvn clean package -q -Psparkbench -Phadoopbench -Dmaven.javadoc.skip=true -Dhadoop=3.2 -Dspark=2.4 -Dscala=2.12 -Dmaven-compiler-plugin.version=3.8.0 -Dexclude-streaming
+    elif [[ "$java_ver" == 8 ]]; then
+        mvn clean package -q -Dmaven.javadoc.skip=true -Dhadoop=3.2 -Dspark=2.4 -Dscala=2.11
+    elif [[ "$java_ver" == 7 ]]; then
+        mvn clean package -q -Dmaven.javadoc.skip=true -Dspark=2.2 -Dscala=2.11
+        mvn clean package -q -Dmaven.javadoc.skip=true -Dspark=2.0 -Dscala=2.11
+        mvn clean package -q -Dmaven.javadoc.skip=true -Dspark=1.6 -Dscala=2.10
+    else
+        exit 1
+    fi
+
+    sudo -E ./travis/configssh.sh
+    sudo -E ./travis/restart_hadoop_spark.sh
+    sudo -E ./bin/run_all.sh