Use JDK 8 for ci (#2681)

.travis.yml

@@ -7,7 +7,24 @@ services:
 git:
  depth: 500
 
-# using jabba for custom jdk management (see ./scripts/build.sh)
+addons:
+ hosts:
+ # to run tests locally, these hostnames need to resolve to localhost IP
+ - hbase
+ apt:
+ sources:
+ # Official debian package for AdoptOpenJDK from https://adoptopenjdk.net/installation.html#linux-pkg
+ - sourceline: deb https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/ xenial main
+ key_url: https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public
+ packages:
+ - adoptopenjdk-8-hotspot
+
+before_install:
+ - whereis java
+ # build, test and release using JDK 8 to make sure alpakka works with it
+ - export JAVA_HOME=/usr/lib/jvm/adoptopenjdk-8-hotspot-amd64
+ - export PATH=/usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/bin:$PATH
+ - java -version
 
 # default script for jobs, that do not have any specified
 script: ./scripts/travis.sh
@@ -177,11 +194,6 @@ cache:
  - $HOME/.jabba
  timeout: 900
 
-addons:
- hosts:
- # to run tests locally, these hostnames need to resolve to localhost IP
- - hbase
-
 env:
  global:
  - RUN_DROP_TRAVIS_CACHES_STAGE=true

scripts/build.sh

@@ -5,14 +5,6 @@ set -x
 PRE_CMD=$1
 CMD=$2
 
-[ "$TRAVIS_EVENT_TYPE" == "cron" ] && JDK="adopt@~1.11-0" || JDK="adopt@~1.8-0"
-
-# using jabba for custom jdk management
-if [ ! -f ~/.jabba/jabba.sh ]; then curl -L -v --retry 5 -o jabba-install.sh https://raw.githubusercontent.com/shyiko/jabba/0.11.2/install.sh && bash jabba-install.sh; fi
-. ~/.jabba/jabba.sh
-jabba install "$JDK"
-jabba use "$JDK"
-java -version
 $PRE_CMD
 
 sbt -sbt-launch-repo https://repo1.maven.org/maven2 -jvm-opts .jvmopts-travis "$CMD"