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https://issues.apache.org/jira/browse/AMBARI-13238?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14907343#comment-14907343
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Thomas Friedrich commented on AMBARI-13238:
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The proposed patch checks for the pid file location as configured in
/etc/my.cnf which is the default config location for MySQL server. Since the
MySQL server instance in Ambari doesn't set the config location, it will use
the values configured in the default config file. The status command will then
check for the process with the id referenced in the pid file.
> MySQL service check needs to be more robust
> -------------------------------------------
>
> Key: AMBARI-13238
> URL: https://issues.apache.org/jira/browse/AMBARI-13238
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Thomas Friedrich
> Assignee: Thomas Friedrich
> Priority: Minor
> Attachments: AMBARI-13238.patch
>
>
> The mysql service check in mysql_service.py simply checks for the existence
> of a mysqld process. If an unrelated mysqld service is running on the same
> node and Hive is configured to run with a MySQL db, the Hive start action
> won't start the MySQL server instance and the metastore connection fails.
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