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From "Yurii Shylov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-8898) Implement all pre-upgrade checks
Date Tue, 23 Dec 2014 20:33:13 GMT
Yurii Shylov created AMBARI-8898:
------------------------------------

             Summary: Implement all pre-upgrade checks 
                 Key: AMBARI-8898
                 URL: https://issues.apache.org/jira/browse/AMBARI-8898
             Project: Ambari
          Issue Type: Task
          Components: ambari-server
    Affects Versions: 2.0.0
            Reporter: Yurii Shylov
            Assignee: Yurii Shylov
             Fix For: 2.0.0


The following checks should be implemented:
*All* cluster hosts must satisfy the following:
1) It is either in Host Maintenance Mode or heartbeating with the server
2) If in Host Maintenance Mode, there are no masters on the host
3) If not in Host Maintenance Mode, it must have new version installed
*All* of the following must be satisfied:
1) NameNode HA is enabled
2) Make sure work-preserving RM/NM restart is enabled in YARN configuration files
3) MR Jobs need to reference the Hadoop libraries from the distributed cache instead of the
cluster
4) Tez jobs need to reference the Hadoop libraries from the distributed cache instead of the
cluster
5) Oozie jobs need to reference the Hadoop libraries from the distributed cache instead of
the cluster
6) All services must be up, not in Service Maintenance Mode, and operational (all components
are up and service check should pass*).
7) All DataNode decommissioning must be completed (no DataNode in “decommissioning” state)



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