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https://reviews.apache.org/r/37979/
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Review request for Ambari and Yusaku Sako.
Bugs: AMBARI-12951
https://issues.apache.org/jira/browse/AMBARI-12951
Repository: ambari
Description
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If the admin attempts to shutdown the HDFS NameNode(s) through Ambari in
following situations:
* HDFS service > Stop / Restart All components,
* HDFS summary/configs page> Restart Affected,
* Host Details > NameNode Stop / Restart,
* Host Details > Stop/Restart all components,
* Stop All Services,
* Hosts Actions > All/Selected/Filtered Hosts > Hosts > Stop/Restart All
Components,
A check should be run to see when the last HDFS checkpoint was created.
If the checkpoint was created more than 12 hours ago, Ambari should prompt the
user to save/create a checkpoint first.
"The last HDFS checkpoint is older than 12 hours. Make sure that you have
taken a checkpoint before proceeding. Otherwise, the NameNode(s) can take a
very long time to start up."
The check should be skipped if there's no NameNode to shut down (i.e., all
NameNodes are already down) as a result of the operation.
The user should be warned with instructions to create a new checkpoint, it is
up to User if they would like to create a new checkpoint. User can always
proceed with button "Next".
The Active NameNode JMX is checked to figure out when the last checkpoint was
taken. If the Active NameNode JMX is not available for whatever reason, check
for any available NameNode JMX (Standby).
If no JMX info is available, then something is wrong. In this case, display
warning along the line of "Could not determine the age of the last HDFS
checkpoint. Please ensure that you have a recent checkpoint. Otherwise, the
NameNode(s) can take a very long time to start up."
*Limitations*
* NameNode shutdown that are part of any Wizard will not be taken care of in
this RMP (e.g., NameNode HA wizard)
Diffs
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ambari-web/app/controllers/main/host.js 8bf9065
ambari-web/app/controllers/main/host/details.js adf0c40
ambari-web/app/controllers/main/service.js d1346e4
ambari-web/app/controllers/main/service/info/configs.js 087ef53
ambari-web/app/controllers/main/service/item.js d12164a
ambari-web/app/messages.js 78f51f8
ambari-web/app/utils/ajax/ajax.js b1542c9
ambari-web/app/views/main/service/info/summary.js 4e58bda
ambari-web/test/controllers/main/service/item_test.js 46e7512
Diff: https://reviews.apache.org/r/37979/diff/
Testing
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UNIT Tests passed.
Tested all situations in Description e2e.
Thanks,
Xi Wang
