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https://issues.apache.org/jira/browse/MAPREDUCE-6040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14111320#comment-14111320
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Charles Lamb commented on MAPREDUCE-6040:
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Hi [~sanjay.radia],
bq. Note distcp needs to be fixed for both superuser and normal user (see the
use case table). Row 1 and 4 in the use cases table are same for root and
normal user.
Wouldn't implementing the right side of Row 4 (non-superuser, to/from an ez)
require that /.reserved/raw be accessible by non-root? Presently, /.r/r is only
accessible to the superuser.
The theory is that if a non-superuser wants to use distcp to copy encrypted
files to/from an ez, then they just invoke distcp without /.reserved/raw. The
net effect is the same (encrypted files are copied from src-ez to dest-ez),
it's just that the mechanism is different (super user uses /.r/r and copies
encrypted bits, non-su user does not use /.r/r and copies decrypted bits).
> distcp should automatically use /.reserved/raw when run by the superuser
> ------------------------------------------------------------------------
>
> Key: MAPREDUCE-6040
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6040
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: distcp
> Affects Versions: 3.0.0
> Reporter: Andrew Wang
> Assignee: Charles Lamb
> Attachments: HDFS-6134-Distcp-cp-UseCasesTable2.pdf,
> MAPREDUCE-6040.001.patch
>
>
> On HDFS-6134, [~sanjay.radia] asked for distcp to automatically prepend
> /.reserved/raw if the distcp is being performed by the superuser and
> /.reserved/raw is supported by both the source and destination filesystems.
> This behavior only occurs if none of the src and target pathnames are
> /.reserved/raw.
> The -disablereservedraw flag can be used to disable this option.
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