Todd Lipcon created HDFS-3573:
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Summary: 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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