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https://issues.apache.org/jira/browse/HADOOP-11557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated HADOOP-11557:
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Labels: BB2015-05-TBR (was: )
> ViewFileSystem should init mount points lazily
> ----------------------------------------------
>
> Key: HADOOP-11557
> URL: https://issues.apache.org/jira/browse/HADOOP-11557
> Project: Hadoop Common
> Issue Type: Improvement
> Components: viewfs
> Affects Versions: 2.6.0
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Labels: BB2015-05-TBR
> Attachments: HADOOP-11557.001.patch
>
>
> ViewFs initialization overhead can range from a couple to 10+ seconds
> linearly increasing with the number of mounted namespaces. Eager
> initialization is both expensive (especially when multiplied by MR tasks if
> viewfs is the defaultFS) and also provides for frustrating experience for
> users interactively working via FsShell with a single mount point (MP) under
> their user directory. Internal directories should not require MP
> initialization at all.
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