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https://issues.apache.org/jira/browse/HDFS-5076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13739767#comment-13739767
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Suresh Srinivas commented on HDFS-5076:
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Jing, some comments:
# In journal status should we also return the address and port of the Journal
node?
# Javadoc says "A string presenting status for each journal". Do we want
another method which takes a journal ID/namespaceID for journal related to a
specific namenode.
> Create http servlets to enable querying NN's last applied transaction ID and
> most recent checkpoint's transaction ID
> --------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-5076
> URL: https://issues.apache.org/jira/browse/HDFS-5076
> Project: Hadoop HDFS
> Issue Type: New Feature
> Affects Versions: 3.0.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Priority: Minor
> Attachments: HDFS-5076.001.patch, HDFS-5076.002.patch,
> HDFS-5076.003.patch
>
>
> Currently NameNode already provides RPC calls to get its last applied
> transaction ID and most recent checkpoint's transaction ID. It can be helpful
> to provide servlets to enable querying these information through http, so
> that administrators and applications like Ambari can easily decide if a
> forced checkpoint by calling saveNamespace is necessary.
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