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https://issues.apache.org/jira/browse/HDFS-3573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-3573:
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Attachment: hdfs-3573.txt
> Supply NamespaceInfo when instantiating JournalManagers
> -------------------------------------------------------
>
> Key: HDFS-3573
> URL: https://issues.apache.org/jira/browse/HDFS-3573
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: 3.0.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Minor
> Attachments: hdfs-3573.txt
>
>
> Currently, the JournalManagers are instantiated before the NamespaceInfo is
> loaded from local storage directories. This is problematic since the JM may
> want to verify that the storage info associated with the journal matches the
> NN which is starting up (eg to prevent an operator accidentally configuring
> two clusters against the same remote journal storage). This JIRA rejiggers
> the initialization sequence so that the JMs receive NamespaceInfo as a
> constructor argument.
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