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From "Oleksandr Diachenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-2955) Change Host Role Command ordering for cluster in HA mode
Date Mon, 19 Aug 2013 16:06:48 GMT
Oleksandr Diachenko created AMBARI-2955:
-------------------------------------------

             Summary: Change Host Role Command ordering for cluster in HA mode
                 Key: AMBARI-2955
                 URL: https://issues.apache.org/jira/browse/AMBARI-2955
             Project: Ambari
          Issue Type: Task
          Components: controller
    Affects Versions: 1.4.1
            Reporter: Oleksandr Diachenko
            Assignee: Oleksandr Diachenko
             Fix For: 1.4.1


1. *JN needs to be up before NN in HA mode* 

Otherwise following exception is raised,
2013-07-31 17:22:24,632 WARN  namenode.FSEditLog (JournalSet.java:selectInputStreams(254))
- Unable to determine input streams from QJM to [192.168.56.101:8485]. Skipping.
java.io.IOException: Timed out waiting 20000ms for a quorum of nodes to respond.

2. *Zookeeper should be up before NN in HA mode*

3. *ZKFC should start after NN*

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