Jerry Chen created HADOOP-9997:
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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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