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From "Jerry Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-9997) Improve TFile API to be able to pass the context for encryption codecs
Date Thu, 26 Sep 2013 07:34:02 GMT
Jerry Chen created HADOOP-9997:

             Summary: 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

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 crypo 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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