[AMBARI-12640] Restarting of services does not observe intra-service dependency

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.7.0
• Fix Version/s: 2.1.1
• Component/s: ambari-server
• Assignee: Tuong Truong
• Reporter: Tuong Truong
• Created: 04/Aug/15 23:43
• Updated: 19/Nov/15 02:52
• Resolved: 19/Nov/15 02:52

Description

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.

Issue Links

• is duplicated by: AMBARI-12472 Hive "Restart All" command fails in Ambari UI when all Hive services are stopped