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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-10388) Pure native hadoop client
Date Mon, 10 Mar 2014 02:00:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-10388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13925392#comment-13925392
] 

Colin Patrick McCabe commented on HADOOP-10388:
-----------------------------------------------

C++ is viable, but we need to remember that C+\+11 is not a coding standard.  We need to adopt
a coding standard such as the Google Coding Standard and follow it closely for C+\+ to be
a practical choice.

I also think we should be able to compile this code on Red Hat 6, since that's the platform
that a lot of our users are using (actually, some of our users are using RHEL5, but I think
we can safely assume that the sun will set on that one before this is ready.)  This means
certain bleeding-edge C+\+ features will be unavailable.  But on the plus side, we won't use
language features that later turn out to be problematic (it's nice not being an early adopter
sometimes.)

I also wrote some C++ code in this direction a while ago.  I never finished it, though.  I'll
see if I can dig it up.

> Pure native hadoop client
> -------------------------
>
>                 Key: HADOOP-10388
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10388
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Binglin Chang
>
> A pure native hadoop client has following use case/advantages:
> 1.  writing Yarn applications using c++
> 2.  direct access to HDFS, without extra proxy overhead, comparing to web/nfs interface.
> 3.  wrap native library to support more languages, e.g. python
> 4.  lightweight, small footprint compare to several hundred MB of JDK and hadoop library
with various dependencies.



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