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https://issues.apache.org/jira/browse/HDFS-229?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon reopened HDFS-229:
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Reopening - having the checkpoint time on the 2NN is good, but I think being
part of dfsadmin -report would still be useful. Additionally, a giant warning
at the top of the NN web UI when it hasn't been checkpointed in some number of
hours/days would also avoid issues.
The unfortunate truth is that a lot of shops don't do a good job of monitoring
and have had their 2NN failing to checkpoint for weeks/months without realizing
it (plenty of evidence on the list of this). A big warning on the NN UI is
certainly not a substitute for proper monitoring, but would help users who
don't have dedicated ops teams to get that monitoring in place.
> Show last checkpoint time on the webUI
> --------------------------------------
>
> Key: HDFS-229
> URL: https://issues.apache.org/jira/browse/HDFS-229
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Koji Noguchi
> Priority: Minor
>
> We've had a couple of occasions where secondary namenode fail/die without
> anyone noticing. (HADOOP-1695)
> It would be nice if the last checkpoint time can be shown on the namenode
> webui.
>
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