[导入]Eclipse 导入/编译 Hadoop 源码

http://www.cnblogs.com/errorx/p/3779578.html

1.准备工作

jdk：

eclipse：

Maven：

libprotoc ：https://developers.google.com/protocol-buffers/

hadoop:http://www.apache.org/dyn/closer.cgi/hadoop/common/

添加开源中国maven库：http://maven.oschina.net/home.html

maven\conf\settings.xml

<localRepository>path</localRepository>

<localRepository>path</localRepository>
<mirrors>
<mirror>
<id>nexus-osc</id>
<mirrorOf>*</mirrorOf>
<name>Nexus osc</name>
<url>http://maven.oschina.net/content/groups/public/</url>
</mirror>
</mirrors>

2.导入

将hadoop源码解压到一个目录，注意目录层次不要太深，否则可能无法解压。

进入hadoop-maven-plugins文件夹，执行 mvn install

返回源码根目录，执行 mvn eclipse:eclipse –DskipTests

eclipse在任意目录创建新的WorkSpace

eclipse设置Maven：window->preference->maven->{Installations...;user Settings：maven\conf\settings.xml}

eclipse：File->inport->Existing Projects into WorkSpace->Hadoop源码根目录

3.错误处理

maven下载pom失败->重新操作

hadoop-streaming中build path错误->Java Build Path->Source:
删除...hadoop-yarn-server-resourcemanager/conf

Link Source:源码根目录/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/conf，再随便起个名字；inclusion patterns：capacity-scheduler.xml；exclusion patters：**/*.java

org.apache.hadoop.io.serializer.avro.TestAvroSerialization

下载avro-tools-1.7.4.jar：http://archive.apache.org/dist/avro/avro-1.7.4/java/

进入目录：源码根目录\hadoop-common-project\hadoop-common\src\test\avro

java -jar path/to/avro-tools-1.7.4.jar compile schema avroRecord.avsc ..\java

eclipse 刷新

org.apache.hadoop.ipc.protobuf.TestProtos

进入目录：源码根目录\hadoop-common-project\hadoop-common\src\test\proto

protoc --java_out=../java *.proto

eclipse 刷新

project->clean..->clean all projects & Build the entire workspace