{{{
#!html
<div style="text-align: center; color: blue"><big
 style="font-weight: bold;"><big><big> Hadoop Develop with Eclipse</big></big></big></div>
}}}
[[PageOutline]]

= 目的 =

 用eclipse編譯hadoop的src

= 環境 =

 * sun-java6-jdk
 * eclipse europa
 * 工作目錄於 /home/waue/workspace
 * 步驟二之後的動作於eclipse 設定

= 1. 用svn 下載最新的hadoop branch =
 *（以0.18為例）

{{{
$ svn co http://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.18/
}}}

= 2 將hadoop專案用ecilpse打開 =

{{{
#!text
file -> new -> project -> java project => next 

project name: brance-0.18
create project from existing source : /home/waue/workspace/branch-0.18

=> finish
}}}

[[Image(wiki:waue/2009/0904:2.png)]]
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= 3  設定專案屬性 =
{{{
#!text
 點選branch-0.18 右鍵 -> properties
}}}


= 3.1 properties -> builders =
{{{
#!text
 * import ->  build.xml 
 * 取消 java builder 的 勾
 * branch-0.18 build.xml 打勾
 * edit
}}}

[[Image(wiki:waue/2009/0904:3.1.png)]]
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= 3.1.1 edit的細部設定  = 

 * main (設定 buildfile路徑)

[[Image(wiki:waue/2009/0904:3.1.1-1.png)]]
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 * classpath

[[Image(wiki:waue/2009/0904:3.1.1-2.png)]]
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 * target （設定build時的方法，注意要點 '''set targets ...'''才能設定）

[[Image(wiki:waue/2009/0904:3.1.1-3.png)]]
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 * 點 '''set targets ...''' 的設定畫面 （注意 order 的順序很重要，先compiler, 再 package）
[[Image(wiki:waue/2009/0904:3.1.1-3-1.png)]]
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= 3.2 properties -> java build path =

{{{
#!text
 * source -> default output folder : branch-0.18/build
}}}
[[Image(wiki:waue/2009/0904:3.2.png)]]
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= 3.3 properties -> java compiler =

{{{
#!text
compiler level : 6.0 
}}}

[[Image(wiki:waue/2009/0904:3.3.png)]]
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 = 4 執行 =

 * run

{{{
#!text
 build.xml -> run as -> ant build 
}}}
[[Image(wiki:waue/2009/0904:4-1.png)]]
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 * run 完的畫面

[[Image(wiki:waue/2009/0904:4-2.png)]]
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 * 可在 專案的build資料夾內看到編譯後的jar檔
[[Image(wiki:waue/2009/0904:4-3.png)]]
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