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https://issues.apache.org/jira/browse/HDFS-3409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13273618#comment-13273618
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Hitesh Shah commented on HDFS-3409:
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@Aaron, thanks for pointing out the other JIRA.
Regarding where the information is exposed, I would defer to anyone who is more
well versed with HDFS to make a call on where it makes sense to expose this
information for 1.x ( whether it is in the namenode if it tracks the last
checkpoint time or do it separately in each SNN given that multiple SNNs are
supported ). Having information of the last valid checkpoint time regardless of
on which SNN it was done 'may' be sufficient from an operational point of view.
> Secondary namenode should expose checkpoint info via JMX
> --------------------------------------------------------
>
> Key: HDFS-3409
> URL: https://issues.apache.org/jira/browse/HDFS-3409
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 1.0.2
> Reporter: Hitesh Shah
>
> Information such as when the last checkpoint was done should be exposed via
> JMX so that it can be easily queried via scripts.
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