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https://issues.apache.org/jira/browse/HADOOP-9997?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry Chen updated HADOOP-9997:
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Attachment: HADOOP-9997.patch
Attacd the patch for reference. It depends on HADOOP-9331.
> Improve TFile API to be able to pass the context for encryption codecs
> ----------------------------------------------------------------------
>
> Key: HADOOP-9997
> URL: https://issues.apache.org/jira/browse/HADOOP-9997
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Affects Versions: 3.0.0
> Reporter: Jerry Chen
> Labels: Rhino
> Attachments: HADOOP-9997.patch
>
> Original Estimate: 72h
> Remaining Estimate: 72h
>
> HADOOP-9996 extends TFile to support any compression codecs available in
> Hadoop, such as Snappy. This also provides the opportunity to utilize the
> crypto codec for encryption, a new feature added by HADOOP-9331. The crypto
> codec is based on the compression codec and it is a natural extension of its
> usage here. While in API level encryption usually needs a key context while
> compression usually doesn’t.
> This work needs to extend the TFile Reader and Writer to passing and handling
> a context of the codec. For crypto codecs, this may be the key information
> for using to encrypt or decrypt the data. To keep the backward compatibility
> of the reader and writer, new methods or constructor with codec context can
> be added instead of modifying the existing methods.
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