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https://issues.apache.org/jira/browse/AMBARI-15364?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang updated AMBARI-15364:
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Fix Version/s: 3.1.0
(was: 3.0.0)
> Ability to trigger NameNode checkpoint from Ambari Web
> ------------------------------------------------------
>
> Key: AMBARI-15364
> URL: https://issues.apache.org/jira/browse/AMBARI-15364
> Project: Ambari
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Sumit Mohanty
> Priority: Major
> Fix For: 3.1.0
>
> Attachments: Screen Shot 2016-03-09 at 6.18.28 PM.png
>
>
> Expose the checkpoint action in the UI and make it work E2E (and ability to
> check on progress):
> Services > HDFS > Service Actions > Save Namespace
> Ample documentation is available that describe checkpoint process for HDFS.
> Roughly, this translate to
> {code}
> >> hdfs dfsadmin -safemode enter
> Safe mode is ON
> >> hdfs dfsadmin -saveNamespace
> Save namespace successful
> >> hdfs dfsadmin -safemode leave
> Safe mode is OFF
> {code}
> One approach is to have custom commands for each operation. In general,
> having support to get into and out of SAFEMODE is useful.
> saveNamespace may be a long running command. Therefore custom command for
> this operation may be long running. Similar to HDFS Rebalance we need support
> for reporting progress.
>
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