[MINOR] Fix Travis CI + Bring back support for Java 8 (#296)
**Major changes:**
- Fixes Travis CI script that have been failing due to gpg error
- Bring back support for Java 8, as Hadoop and REEF still needs support for Java 8 (reverts #291)
**Minor changes to note:**
- None
**Tests for the changes:**
- N/A
**Other comments:**
- None
Closes #296
diff --git a/.travis.yml b/.travis.yml
index 84248c4..477eb1c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -22,6 +22,7 @@
# For maven builds
language: java
jdk:
+ - oraclejdk8
- oraclejdk11
- openjdk11
env:
@@ -30,7 +31,6 @@
jobs:
- GOAL="verify -B -q -ff -Dsurefire.useFile=false -Dorg.slf4j.simpleLogger.defaultLogLevel=info"
before_install:
- - sudo apt update && sudo apt install -y libgif-dev
- nvm install node # for Web UI build
install: true
script:
diff --git a/README.md b/README.md
index 4ba0298..d92bbcd 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
## Nemo prerequisites and setup
### Prerequisites
-* Java 11
+* Java 8 or later (tested on Java 8 and Java 11)
* Maven
* YARN settings
* Download Hadoop 2.7.2 at https://archive.apache.org/dist/hadoop/common/hadoop-2.7.2/
diff --git a/pom.xml b/pom.xml
index 5a5297c..66e14fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,7 +41,7 @@
</scm>
<properties>
- <java.version>11</java.version>
+ <java.version>1.8</java.version>
<maven.compiler.source>${java.version}</maven.compiler.source>
<maven.compiler.target>${java.version}</maven.compiler.target>
<maven.compiler.version>3.8.1</maven.compiler.version>
@@ -176,9 +176,10 @@
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${maven.compiler.version}</version>
- <configuration>
- <release>${java.version}</release>
- </configuration>
+ <!-- Uncomment when dropping support for Java 8 -->
+ <!--<configuration>-->
+ <!-- <release>${java.version}</release>-->
+ <!--</configuration>-->
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
