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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6843) Create FSDataInputStream & FSDataOutputStream isEncrypted() method
Date Thu, 28 Aug 2014 18:08:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14114075#comment-14114075
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Steve Loughran commented on HDFS-6843:
--------------------------------------

As this is extending the core FS APIs

# Can you update the specification of those FS APIs to add a new attribute to a file status
# the contract tests need to be extended too, we just need to verify that isEncrypted returns
"something" ... that could be integrated with one of the exiting tests

This may need to be mentioned in a HADOOP- JIRA even if the patch is in here ... this is broader
than just HDFS


> Create FSDataInputStream & FSDataOutputStream isEncrypted() method
> ------------------------------------------------------------------
>
>                 Key: HDFS-6843
>                 URL: https://issues.apache.org/jira/browse/HDFS-6843
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode, security
>    Affects Versions: 3.0.0
>            Reporter: Charles Lamb
>            Assignee: Charles Lamb
>         Attachments: HDFS-6843.001.patch, HDFS-6843.002.patch
>
>
> FileStatus should have a 'boolean isEncrypted()' method. (it was in the context of discussing
with AndreW about FileStatus being a Writable).
> Having this method would allow MR JobSubmitter do the following:
> -----
> BOOLEAN intermediateEncryption = false
> IF jobconf.contains("mr.intermidate.encryption") THEN
>   intermediateEncryption = jobConf.getBoolean("mr.intermidate.encryption")
> ELSE
>   IF (I/O)Format INSTANCEOF File(I/O)Format THEN
>     intermediateEncryption = ANY File(I/O)Format HAS a Path with status isEncrypted()==TRUE
>   FI
>   jobConf.setBoolean("mr.intermidate.encryption", intermediateEncryption)
> FI



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