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https://issues.apache.org/jira/browse/HADOOP-11026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14117334#comment-14117334
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Steve Loughran commented on HADOOP-11026:
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One more thing, does {{isEncrypted()}} issue any guarantees about
encryptedness. e.g if it is true, does it guarantee that some form of
non-trivial encryption has been applied?
Maybe say
The encryption mechanism may be specific to the filesystem and the specific
installation of the FS; no guarantees of quality can be made.
{{isEncrypted()==true}} does not guarantee that the file cannot be read by
others, merely that some form of encryption has been applied.
Similarly {{isEncrypted()==false} does not imply the file is unencrypted —it
may be a filesystem-wide encryption system such as an encrypted hard drive, an
encryption that is not visible to the Hadoop FS APIs.
> add FileSystem contract specification for FSDataInputStream and
> FSDataOutputStream#isEncrypted
> ----------------------------------------------------------------------------------------------
>
> Key: HADOOP-11026
> URL: https://issues.apache.org/jira/browse/HADOOP-11026
> Project: Hadoop Common
> Issue Type: Bug
> Components: documentation, test
> Affects Versions: 3.0.0, 2.6.0
> Reporter: Charles Lamb
> Assignee: Charles Lamb
> Priority: Minor
> Attachments: HADOOP-11026-prelim.001.patch, HADOOP-11026.001.patch
>
>
> Following on to HDFS-6843, the contract specification for FSDataInputStream
> and FSDataOutputStream needs to be updated to reflect the addition of
> isEncrypted.
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