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https://issues.apache.org/jira/browse/HDFS-7966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540136#comment-14540136
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stack commented on HDFS-7966:
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Nice writeup [~shiqiezi] Only comments are why you do not just use grpc rather
just be inspired by it and secondly, there is no discussion of how you envision
clients moving over to the new transport. Will DN listen on different port with
http/2? Thanks.
> New Data Transfer Protocol via HTTP/2
> -------------------------------------
>
> Key: HDFS-7966
> URL: https://issues.apache.org/jira/browse/HDFS-7966
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: Haohui Mai
> Assignee: Qianqian Shi
> Labels: gsoc, gsoc2015, mentor
> Attachments: GSoC2015_Proposal.pdf
>
>
> The current Data Transfer Protocol (DTP) implements a rich set of features
> that span across multiple layers, including:
> * Connection pooling and authentication (session layer)
> * Encryption (presentation layer)
> * Data writing pipeline (application layer)
> All these features are HDFS-specific and defined by implementation. As a
> result it requires non-trivial amount of work to implement HDFS clients and
> servers.
> This jira explores to delegate the responsibilities of the session and
> presentation layers to the HTTP/2 protocol. Particularly, HTTP/2 handles
> connection multiplexing, QoS, authentication and encryption, reducing the
> scope of DTP to the application layer only. By leveraging the existing HTTP/2
> library, it should simplify the implementation of both HDFS clients and
> servers.
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