[jira] [Created] (AMBARI-16251) Hive metastore alerts are present after upgrade/downgrade and enabling security

["Nate Cole (JIRA)" <ji...@apache.org>]

Nate Cole created AMBARI-16251:
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             Summary: Hive metastore alerts are present after upgrade/downgrade and enabling security
                 Key: AMBARI-16251
                 URL: https://issues.apache.org/jira/browse/AMBARI-16251
             Project: Ambari
          Issue Type: Bug
          Components: ambari-server
            Reporter: Nate Cole
            Assignee: Nate Cole
            Priority: Critical
             Fix For: 2.4.0


The cause of this bug is not obvious.  In the upgrade/downgrade cycle for HDP-2.2 upgrade to HDP-2.4 downgrade to HDP-2.2, the Metastore upgrade_schema method will invoke configure().  This in turn creates (correctly) {{/usr/hdp/current/hive-metastore/conf/conf.server}} to place configs.  The bug is that upgrade_schema happens BEFORE hdp-select is called, so the directory is created within HDP-2.2.  Then on downgrade, that directory is left intact.

The alert will check for existence of {{conf/conf.server}} as an indication of where to look for configs.  Since that directory is incorrect for HDP-2.2, the wrong configs are loaded when running the alert script.

The fix is to invoke upgrade_schema AFTER hdp-select instead of before.  That way, the {{conf/conf.server}} directory is created in the correct directory in the version that supports it.



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