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https://issues.apache.org/jira/browse/HDFS-1926?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13032427#comment-13032427
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Ivan Kelly commented on HDFS-1926:
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One addendum is that I have temporarily put the code to format edits
directories in FSImage#formatOccurred. I did this because the NNStorageListener
is not on the streams and these are not created at the time of a format, so
formatting would not occur. I assume that HDFS-1073 will get rid of these style
of format anyhow, so once sequential editlog filenames are implemented, this
can be directly deleted. At this stage NNStorageListener could be reevaluated
as a lot of it's usefulness will no longer be needed.
> Remove references to StorageDirectory from JournalManager interface
> -------------------------------------------------------------------
>
> Key: HDFS-1926
> URL: https://issues.apache.org/jira/browse/HDFS-1926
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Ivan Kelly
> Assignee: Ivan Kelly
> Attachments: HDFS-1926.diff
>
>
> The JournalManager interface introduced by HDFS-1799 has a
> getStorageDirectory method which is out of place in a generic interface. This
> JIRA removed that call by refactoring the error handling for FSEditLog. Each
> EditLogFileOutputStream is now a NNStorageListener and listens for error on
> it's containing StorageDirectory. If an error occurs from FSImage, the stream
> will be aborted. If the error occurs in FSEditLog, the stream will be aborted
> and NNStorage will be notified that the StorageDirectory is no longer valid.
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