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From: Apache Wiki <wikidiffs@apache.org>
To: Apache Wiki <wikidiffs@apache.org>
Date: Fri, 03 Feb 2012 03:51:18 -0000
Message-ID: <20120203035118.88951.79000@eos.apache.org>
Subject: 
 =?utf-8?q?=5BHadoop_Wiki=5D_Update_of_=22QwertyManiac/BuildingHadoopTrunk?=
 =?utf-8?q?=22_by_QwertyManiac?=
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The "QwertyManiac/BuildingHadoopTrunk" page has been changed by QwertyMania=
c:
http://wiki.apache.org/hadoop/QwertyManiac/BuildingHadoopTrunk?action=3Ddif=
f&rev1=3D6&rev2=3D7

    * Most of us use Oracle's JDK or OpenJDK.
      * OpenJDK - [[http://openjdk.org]]
      * Oracle JDK - [[http://java.com]]
+ =

  2. Apache Maven (3+) - To build and manage the Apache Hadoop projects and=
 its dependencies.
    * A latest release of Apache Maven ({{{mvn}}}) can be got at [[http://m=
aven.apache.org]].
+ =

  3. Git or Apache Subversion - To fetch Apache Hadoop sources and manage p=
atches.
    * Git is available via [[http://git.org]]
    * Subversion can be got via [[http://subversion.apache.org]]
+ =

  4. Some spirit is always good to have.
  =

  =3D Building trunk =3D
@@ -19, +22 @@

    * Using GitHub mirror: {{{git clone git@github.com:apache/hadoop-common=
.git hadoop}}}
    * Using Apache Git mirror: {{{git clone git://git.apache.org/hadoop-com=
mon.git hadoop}}}
    * Using the Subversion repo: {{{svn checkout http://svn.apache.org/repo=
s/asf/hadoop/common/trunk hadoop}}}
+ =

  2. Download and install Google Protobuf 2.4+ in your OS/Distribution.
    1. On RHEL/CentOS/Fedora, do {{{yum install protobuf-compiler}}}
    2. On Ubuntu, do {{{apt-get install protobuf}}}
    3. On OSX, you can get Homebrew and do {{{brew install protobuf}}}
    4. (The list can go on, but you get the idea, and you have access to a =
web search engines=E2=80=A6)
    5. Do ensure the version is right with a {{{protoc --version}}}
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  3. '''Optional''': Install all the usual build/development essentials lik=
e '''gcc''', '''autoconf''', '''automake''', '''make''', '''zlib''', etc. f=
or various native-code components you may want to hack on.
+ =

  4. Enter the top level checkout directory ({{{hadoop}}}) and issue {{{mvn=
 install -DskipTests}}} to kick off the compile.
+ =

  5. If you want to generate eclipse project files, run: {{{mvn eclipse:ecl=
ipse}}}.
  =

  =3D Building branch-0.23 =3D
@@ -39, +46 @@

    * Using Apache Git mirror: {{{git clone git://git.apache.org/hadoop-com=
mon.git hadoop}}}
      * Checkout the branch-0.23 branch once this is done: {{{cd hadoop; gi=
t checkout branch-0.23}}}
    * Using the Subversion repo: {{{svn checkout http://svn.apache.org/repo=
s/asf/hadoop/common/branches/branch-0.23 hadoop}}}
+ =

  2. If you want to generate eclipse project files, run: {{{mvn eclipse:ecl=
ipse}}}.
  =

  =3D Building branch-0.22 =3D
@@ -51, +59 @@

    * Using Apache Git mirror: {{{git clone git://git.apache.org/hadoop-com=
mon.git hadoop}}}
      * Check out the branch-0.22 branch once this is done: {{{cd hadoop; g=
it checkout branch-0.22}}}
    * Using the Subversion repo: {{{svn checkout http://svn.apache.org/repo=
s/asf/hadoop/common/branches/branch-0.22 hadoop}}}
+ =

  2. '''Optional''': Install all the usual build/development essentials lik=
e '''gcc''', '''autoconf''', '''automake''', '''make''', '''zlib''', etc. f=
or various native-code components you may want to hack on.
+ =

  3. There are three projects subdirectories that lie under the root hadoop=
 directory: '''common/''', '''hdfs/''', and '''mapred/'''. You will need to=
 build each one individually, or build the ones you are interested in.
    1. For instance, to build the "mapred" project, you need to begin by en=
tering its directory: {{{cd hadoop/hdfs}}}.
    2. To then compile the whole project, run: {{{ant compile}}}.
    3. The above instructions can be repeated for {{{hadoop/common}}} and {=
{{hadoop/hdfs}}} project directories.
+ =

  3. If you want to generate eclipse project files, under each project's ro=
ot directory, run: {{{ant eclipse}}}.
  =

  =3D Building branch-0.21 =3D
@@ -76, +87 @@

    * Using Apache Git mirror: {{{git clone git://git.apache.org/hadoop-com=
mon.git hadoop}}}
      * Check out the branch-1 branch once this is done: {{{cd hadoop; git =
checkout branch-1}}}
    * Using the Subversion repo: {{{svn checkout http://svn.apache.org/repo=
s/asf/hadoop/common/branches/branch-1 hadoop}}}
+ =

  2. '''Optional''': Install all the usual build/development essentials lik=
e '''gcc''', '''autoconf''', '''automake''', '''make''', '''zlib''', etc. f=
or various native-code components you may want to hack on.
+ =

  3. The source code all lies under the same project directory, so you just=
 need to issue an Ant build: {{{cd hadoop; ant compile}}}
+ =

  4. If you want to generate eclipse project files, under each project's ro=
ot directory, run: {{{ant eclipse}}}.
 =20