[AMBARI-21099] Drop JDK 7 support for Ambari Server and Ambari managed services (AMS, LogSearch, Infra)

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: ambari-server
• Assignee: Oliver Szabo
• Reporter: Oliver Szabo
• Created: 23/May/17 10:36
• Updated: 28/Jun/17 20:57
• Resolved: 28/Jun/17 19:19

Description

Requirements:

• ambari should drop JDK 7 support for ambari-server and ambari-managed services (infra, ams, logsearch)
• HDP 2.x should be still able to use JDK 1.7
  Changes in ambari setup:
  1. First the usual ambari setup

  Choose JDK for Ambari and Stack services:
  [1] Oracle JDK 1.8 + Java Cryptography Extension (JCE) Policy Files 8
  [2] Oracle JDK 1.7 + Java Cryptography Extension (JCE) Policy Files 7
  [3] Custom JDK
  

  2. If JDK 7 is picked, that cannot be used for ambari (only for the stack services)

  JDK 7 is detected (JDK 8 required for ambari-server), install JDK 8 as well:
  [1] Oracle JDK 1.8 + Java Cryptography Extension (JCE) Policy Files 8
  [3] Custom JDK
  

  The following command also can work to setup custom java_home (for stacks + ambari):

  ambari-server setup -s --java-home=... --stack-java-home=...
  

  After the commands are executed, the following properties would appear in ambari.properties

  stack.java.home=/usr/jdk64/jdk1.7.0_67
  stack.jdk.name=jdk-7u67linux-x64.tar.gz
  stack.jce.name=UnlimitedJCEPolicyJDK7.zip
  

During command.json generating, commandParameters would be filled with proper ambari jdk,jce info (different for infra/logsearch/ams from other services) - not hostLevelParams, as multiple command could use the same hostLevelParams (like start all services: that can start zookeeper and ams as well with the same hostLevelParams)

On ambari-upgrade, ambari process wont be able to start with jdk7 so it will be required to run ambari-server setup first (you can skip the first change jdk part, but then the user will see its needed to setup a different jdk for ambari)

In the future, it will be recommended to do the JDK upgrade before upgrading to HDP 3.0 (to avoid some issues during HDP upgrade)

Issue Links

• links to: Review Board