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https://issues.apache.org/jira/browse/HADOOP-16235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16818831#comment-16818831
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Masatake Iwasaki commented on HADOOP-16235:
-------------------------------------------

As I read [FAQ of Storage Service 
Encryption|https://docs.microsoft.com/en-us/azure/virtual-machines/windows/faq-for-disks#managed-disks-and-storage-service-encryption],
 it would OK to always return true for isEncrypted().

While data written before June 10, 2017 is not encrypted, FAQ says existing 
data are planned to be encrypted in background. There seems to be no good way 
to determine the value of isEncrypted() for wasb and adl.

> ABFS VersionedFileStatus to declare that it isEncrypted()
> ---------------------------------------------------------
>
>                 Key: HADOOP-16235
>                 URL: https://issues.apache.org/jira/browse/HADOOP-16235
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>    Affects Versions: 3.2.0
>            Reporter: Steve Loughran
>            Assignee: Masatake Iwasaki
>            Priority: Minor
>
> Files in ABFS are always encrypted; have VersionedFileStatus.isEncrypted() 
> declare this, presumably just by changing the flag passed to the superclass's 
> constructor



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