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https://issues.apache.org/jira/browse/HDFS-16791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17784241#comment-17784241
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ASF GitHub Bot commented on HDFS-16791:
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mccormickt12 opened a new pull request, #6262:
URL: https://github.com/apache/hadoop/pull/6262
…plementations (#6198)
The enclosing root path is a common ancestor that should be used for temp
and staging dirs as well as within encryption zones and other restricted
directories.
Contributed by Tom McCormick
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### Description of PR
Cherry pick of
https://github.com/apache/hadoop/pull/6198#pullrequestreview-1712503495
### How was this patch tested?
### For code changes:
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> Add getEnclosingRoot() API to filesystem interface and implementations
> ----------------------------------------------------------------------
>
> Key: HDFS-16791
> URL: https://issues.apache.org/jira/browse/HDFS-16791
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: fs
> Affects Versions: 3.3.6
> Reporter: Tom McCormick
> Assignee: Tom McCormick
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> At LinkedIn we run many HDFS volumes that are federated by either
> ViewFilesystem or Router Based Federation. As our number of hdfs volumes
> grows, we have a growing need to migrate data seemlessly across volumes.
> Many frameworks have a notion of staging or temp directories, but those
> directories often live in random locations. We want an API getEnclosingRoot,
> which provides the root path a file or dataset.
> In ViewFilesystem / Router Based Federation, the enclosingRoot will be the
> mount point.
> We will also take into account other restrictions for renames like
> encryptions zones.
> If there are several paths (a mount point and an encryption zone), we will
> return the longer path
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