[Hadoop Wiki] Update of "HadoopHackathon20110518" by TomWhite

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http://wiki.apache.org/hadoop/HadoopHackathon20110518

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New page:
= Apache Hadoop Hackathon, May 18, 2011 =

Hosted at Cloudera's San Francisco and Palo Alto offices.

== Useful resources ==

 * HowToContribute
 * EclipseEnvironment
 * Previous hackathon notes: http://bit.ly/hadoop-hack-may11

== Quick Start ==

Checking out Hadoop:
Git:
{{{
mkdir hadoop-git ; cd hadoop-git

git clone https://github.com/apache/hadoop-common.git
git clone https://github.com/apache/hadoop-hdfs.git
git clone https://github.com/apache/hadoop-mapreduce.git

(or if we fix ssh: #git clone git://git.apache.org/hadoop-common.git
#git clone git://git.apache.org/hadoop-mapreduce.git
#git clone git://git.apache.org/hadoop-hdfs.git
)
}}}

svn:
{{{
mkdir hadoop-svn ; cd hadoop-svn
svn co https://svn.apache.org/repos/asf/hadoop/common/trunk
svn co https://svn.apache.org/repos/asf/hadoop/mapreduce/trunk
svn co https://svn.apache.org/repos/asf/hadoop/hdfs/trunk
(for trunk -- for branches, use /repos/asf/hadoop/common/branches/branch-0.22 )
}}}

Running tests
{{{
ant test-core -Dtest.output=yes -Dtestcase=TestEditLog
}}}

test.output will print output to console, useful for hanging tests

Eclipse: see EclipseEnvironment

Submitting a patch
{{{
Open a jira
Make change
Run tests
git diff --no-prefix > /tmp/HADOOP-1234.txt
}}}

Review queues
 * Common: https://issues.apache.org/jira/secure/IssueNavigator.jspa?requestId=12311124&mode=hide
 * HDFS: https://issues.apache.org/jira/secure/IssueNavigator.jspa?requestId=12313301&mode=hide
 * MapReduce: https://issues.apache.org/jira/secure/IssueNavigator.jspa?requestId=12313302&mode=hide

== Suggestions for what to work on ==

=== Infrastructure improvements ===

=== Make it easier for others to contribute ===

=== Help get 0.22 out the door ===

=== Try to use the release (or build from trunk) ===

=== Help get trunk in shape ===
 * Newbie JIRAs: https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=true&jqlQuery=project+in+%28%22HADOOP%22%2C+%22MAPREDUCE%22%2C+%22HDFS%22%29+and+labels+%3D+%22newbie%22