I have HDP 2.4. I have installed OpenJDK 1.7 as mentioned in the following link. The installation happens without any error. Step 5 in this link mentions the line 'ln -s /usr/hdp/current/jvm/java-1.7.0-openjdk-1.7.0.51.x86_64 /usr/java/default'. I do not see any folder called JVM under /usr/hdp/current. I also executed java -version, but I still see Java RE, but no JDK. What am I doing wrong?. Also, when I execute javac, i get the error -bash: javac: command not found https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.4.3/bk_installing_manually_book/content/meet-min-system-requirements.html ... View more

I have setup a four node cluster using HDP 2.4. Currently is has Java 1.7 installed. I tried to upgrade to java 1.8 by executing "ambari-server setup". I select Option [1]. This starts the downloading of Java 1.8, but after trying for a few minutes, I see the following error. I have not been able to figure out the issue, but wondering if there is way to manually upgrade the java version from 1.7 to 1.8 without ambari-server setup? I have read the below thread, but I would like to confirm whether it is fine to do so. Thread https://community.hortonworks.com/questions/46432/upgrading-jdk-17-to-18-on-hdp-242.html Error: REASON: Downloading or installing JDK failed: 'Fatal exception: Failed to download JDK: <urlopen error [Errno 110] Connection timed out>. Please check that the JDK is available at http://public-repo-1.hortonworks.com/ARTIFACTS/jdk-8u60-linux-x64.tar.gz. Also you may specify JDK file location in local filesystem using --jdk-location command line argument., exit code 1'. Exiting. The above error message also mentions "Also you may specify JDK file location in local filesystem using --jdk-location command line argument", so can anyone please help me with the steps? ... View more