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From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Thu, 12 Jan 2012 15:01:44 -0000
Message-ID: <20120112150144.72385.95722@eos.apache.org>
Subject: 
 =?utf-8?q?=5BHadoop_Wiki=5D_Update_of_=22HowToContribute=22_by_SteveLough?=
 =?utf-8?q?ran?=
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The "HowToContribute" page has been changed by SteveLoughran:
http://wiki.apache.org/hadoop/HowToContribute?action=3Ddiff&rev1=3D75&rev2=
=3D76

Comment:
fix some link entries

  First of all, you need the Hadoop source code. The official location for =
Hadoop is the Apache SVN repository; Git is also supported, and useful if y=
ou want to make lots of local changes -and keep those changes under some fo=
rm or private or public revision control.
  =

  =3D=3D=3D=3D SVN Access =3D=3D=3D=3D
- Get the source code on your local drive using [[http://hadoop.apache.org/=
core/version_control.html|SVN]].  Most development is done on the "trunk":
+ Get the source code on your local drive using [[http://hadoop.apache.org/=
core/version_control.html |SVN]].  Most development is done on the "trunk":
  =

  {{{
  svn checkout http://svn.apache.org/repos/asf/hadoop/common/trunk/ hadoop-=
trunk
@@ -71, +71 @@

  =

  =3D=3D=3D Building ProtocolBuffers (for 0.23+) =3D=3D=3D
  =

- Hadoop 0.23+ must have Google's ProtocolBuffers for compilation to work. =
These are native binaries which need to be downloaded, compiled and then in=
stalled locally.  See [[http://svn.apache.org/repos/asf/hadoop/common/trunk=
/hadoop-mapreduce-project/hadoop-yarn/README|YARN Readme]
+ Hadoop 0.23+ must have Google's ProtocolBuffers for compilation to work. =
These are native binaries which need to be downloaded, compiled and then in=
stalled locally.  See [[http://svn.apache.org/repos/asf/hadoop/common/trunk=
/hadoop-mapreduce-project/hadoop-yarn/README |YARN Readme]]
  =

  This is a good opportunity to get the GNU C/C++ toolchain installed, whic=
h is useful for working on the native code used in the HDFS project.
  =

@@ -85, +85 @@

  =

   * you need a copy of GCC 4.1+ including the {{{g++}}} C++ compiler, {{{m=
ake}}} and the rest of the GNU C++ development chain.
   * Linux: you need a copy of autoconf installed, which your local package=
 manager will do -along with automake.
-  * Download the version of protocol buffers that the YARN readme recommen=
ds from [[http://code.google.com/p/protobuf/|the protocol buffers project]].
+  * Download the version of protocol buffers that the YARN readme recommen=
ds from [[http://code.google.com/p/protobuf/ |the protocol buffers project]=
].
   * unzip it/untar it
   * {{{cd}}} into the directory that has been created.
   * run {{{/.configure}}}.
@@ -108, +108 @@

  protoc: error while loading shared libraries: libprotobuf.so.7: cannot op=
en shared object file: No such file or directory
  }}}
  =

- This is a [[http://code.google.com/p/protobuf/issues/detail?id=3D213|know=
n issue]] for Linux, and is caused by a stale cache of libraries. Run {{{ld=
config}}} and try again.
+ This is a [[http://code.google.com/p/protobuf/issues/detail?id=3D213 |kno=
wn issue]] for Linux, and is caused by a stale cache of libraries. Run {{{l=
dconfig}}} and try again.
  =

  =3D=3D=3D Making Changes =3D=3D=3D
  Before you start, send a message to the [[http://hadoop.apache.org/core/m=
ailing_lists.html|Hadoop developer mailing list]], or file a bug report in =
[[Jira]].  Describe your proposed changes and check that they fit in with w=
hat others are doing and have planned for the project.  Be patient, it may =
take folks a while to understand your requirements.