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https://issues.apache.org/jira/browse/HDFS-15427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uma Maheswara Rao G updated HDFS-15427:
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Fix Version/s: 3.1.5
3.3.1
3.2.2
> Merged ListStatus with Fallback target filesystem and InternalDirViewFS.
> ------------------------------------------------------------------------
>
> Key: HDFS-15427
> URL: https://issues.apache.org/jira/browse/HDFS-15427
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: viewfs
> Affects Versions: 3.2.1
> Reporter: Uma Maheswara Rao G
> Assignee: Uma Maheswara Rao G
> Priority: Major
> Fix For: 3.2.2, 3.3.1, 3.4.0, 3.1.5
>
>
> Currently ListStatus will not consider fallback directory when passed path is
> an internal Directory(except root).
> Since we configured fallback, we should be able to list fallback directories
> when passed path is internal directory. It should list the union of
> fallbackDir and internalDir.
> So, that fallback directories will not be shaded when path matched to
> internal dir.
>
> The idea here is, user configured default filesystem with fallback fs, then
> every operation not having link should go to fallback fs. That way users need
> not configure all paths as mount from default fs.
>
> This will be very useful in the case of ViewFSOverloadScheme.
> In ViewFSOverloadScheme, if you choose your existing cluster to be configured
> as fallback fs, then you can configure desired mount paths to external fs and
> rest other path should go to fallback.
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