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https://issues.apache.org/jira/browse/AMBARI-12640?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tuong Truong reassigned AMBARI-12640:
-------------------------------------
Assignee: Tuong Truong
> Restarting of services does not observe intra-service dependency
> ----------------------------------------------------------------
>
> Key: AMBARI-12640
> URL: https://issues.apache.org/jira/browse/AMBARI-12640
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 1.7.0
> Reporter: Tuong Truong
> Assignee: Tuong Truong
>
> Currently, some services, such as Hive, manages sub subservice like database
> service. When starting a service, the order of the subservices are observed
> to ensure they start properly. However, for restarting of services, the
> dependency order is not observed.
> In the case of Hive, the restart sequence is:
> HCat Client,
> Hive Client,
> Hive Metastore (has dependency on mysql, but started before)
> HiveServer2,
> MySQL server,
> WebHCat server
> So if Mysql Server is down, then the HIve restart sequence will fail.
> To recreate the problem, stop MySQL server, then restart Hive service. One
> will see that the Hive Metastore service will fail to start.
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