Yarn打包执行中参数的设置

A--build中没有配置执行主类：

yarn jar bulkload.jar /bulkload/input/ /bulkload/output


B--配置了执行主类：
<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <version>2.4</version>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <classpathPrefix>lib/</classpathPrefix>
                        <mainClass>bulkload.BulkLoadDriver</mainClass>
                    </manifest>
                </archive>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.0</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
                <encoding>UTF-8</encoding>
            </configuration>
        </plugin>
    </plugins>
</build>

在build中配置了主类：执行时就不要加主类，否则报

Output directory hdfs://node1:8020/bulkload/input already exists

yarn jar bulkload.jar bigdata.itcast.cn.hbase.bulkload.BulkLoadDriver  /bulkload/input/ /bulkload/output