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https://issues.apache.org/jira/browse/HADOOP-11321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Nauroth updated HADOOP-11321:
-----------------------------------
Attachment: HADOOP-11321.008.patch
[~arpitagarwal] correctly pointed out an issue in the handling of the max
length rule for {{CreateDirectory}}. If it must be possible to append an 8.3
file name, then we also need room for an additional path separator, in case the
original path didn't provide it. In fact, in our case, we expect not to have a
trailing path separator, because it gets removed by
{{java.io.File#getAbsolutePath}}. Here is patch v008, changing to {{MAX_PATH -
13}} instead of {{MAX_PATH - 12}}. Thanks for the good eye, Arpit.
> copyToLocal cannot save a file to an SMB share unless the user has Full
> Control permissions.
> --------------------------------------------------------------------------------------------
>
> Key: HADOOP-11321
> URL: https://issues.apache.org/jira/browse/HADOOP-11321
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs
> Affects Versions: 2.6.0
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HADOOP-11321.003.patch, HADOOP-11321.004.patch,
> HADOOP-11321.005.patch, HADOOP-11321.006.patch, HADOOP-11321.007.patch,
> HADOOP-11321.008.patch, HADOOP-11321.1.patch, HADOOP-11321.2.patch,
> winutils.tmp.patch
>
>
> In Hadoop 2, it is impossible to use {{copyToLocal}} to copy a file from HDFS
> to a destination on an SMB share. This is because in Hadoop 2, the
> {{copyToLocal}} maps to 2 underlying {{RawLocalFileSystem}} operations:
> {{create}} and {{setPermission}}. On an SMB share, the user may be
> authorized for the {{create}} but denied for the {{setPermission}}. Windows
> denies the {{WRITE_DAC}} right required by {{setPermission}} unless the user
> has Full Control permissions. Granting Full Control isn't feasible for most
> deployments, because it's insecure. This is a regression from Hadoop 1,
> where {{copyToLocal}} only did a {{create}} and didn't do a separate
> {{setPermission}}.
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