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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-65) add a record I/O framework to hadoop
Date Thu, 04 May 2006 04:12:18 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-65?page=comments#action_12377702 ] 

Doug Cutting commented on HADOOP-65:
------------------------------------

Looking a bit more closely, I see that some of the packages and classes are missing javadoc.
 Can you please supply an additional patch which adds this?  In many cases, javadoc comments
are only needed on base classes and interfaces (e.g., JType, InputArchive, OutputArchive)
as they will automatically propagate to subclasses & implementations.  Also, the JavaCC-generated
code will in many places lack javadoc, but a package.html explaining that the package contains
only generated code would be useful.

> add a record I/O framework to hadoop
> ------------------------------------
>
>          Key: HADOOP-65
>          URL: http://issues.apache.org/jira/browse/HADOOP-65
>      Project: Hadoop
>         Type: New Feature

>   Components: io, ipc
>     Versions: 0.2
>     Reporter: Sameer Paranjpye
>     Priority: Minor
>      Fix For: 0.2
>  Attachments: HadoopRecordIO.patch
>
> Hadoop could benefit greatly from a simple record I/O framework that enables the specification
of simple record types and enables the generation of code for serialization/deserialization
in multiple target languages. The framework would handle a small well understood set of primitive
types and simple compositions of these (structs, vectors, maps) . It would be possible to
leverage this framework to express I/O in MapReduce computations and to use this as the basis
for Hadoops RPC implementation. This would make interfacing with code in languages other than
Java much easier.

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