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https://issues.apache.org/jira/browse/HADOOP-4008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sanjay Radia updated HADOOP-4008:
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Description:
The Data transfer between client and datanode and between datanode and datanode
is a streaming
protocol where messages and data is sent across a tcp connection.
The messages are not concrete data types (ie they are not classes or
interfaces), instead the fields are marshalled and unmarshalled in in various
classes.
The message exchange could be made concrete by declaring message data types
and/or interfaces.
This will help future automated versioning via protocol-buffers style approach.
It will also help document the interface and can simplify the code.
was:
The Client-Datanode streaming protocol is a set of message exchanges.
The messages are not concrete data type s(ie it is not classes or interfaces).
The message exchange could be made concrete by declaring message data types
and/or interfaces.
This will help future automated versioning via protocol-buffers style approach.
It will also help document the interface and can simplify the code.
Summary: Make the Data transfer streaming protocol concrete (was: Make
the Client-Datanode streaming protocol concrete)
> Make the Data transfer streaming protocol concrete
> --------------------------------------------------
>
> Key: HADOOP-4008
> URL: https://issues.apache.org/jira/browse/HADOOP-4008
> Project: Hadoop Core
> Issue Type: Sub-task
> Components: dfs
> Reporter: Sanjay Radia
>
> The Data transfer between client and datanode and between datanode and
> datanode is a streaming
> protocol where messages and data is sent across a tcp connection.
> The messages are not concrete data types (ie they are not classes or
> interfaces), instead the fields are marshalled and unmarshalled in in various
> classes.
> The message exchange could be made concrete by declaring message data types
> and/or interfaces.
> This will help future automated versioning via protocol-buffers style
> approach. It will also help document the interface and can simplify the code.
>
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