我遇到了这个问题，我的代码是用scala编写的，我想用命令在hadoop上运行jar:like:

./bin/hadoop jar testing/learning-yarn-1.0.0.jar com.learning.yarn.simpleapp.SimpleApp

它报告错误：线程“main”java.io.filenotfoundexception中出现异常：/var/folders/dy/kgryx\u f11g1fdqpcc8jl m840000gp/t/hadoop-unjar5812913115154946721/meta-inf/license（是一个目录）
我修改了基于hadoopjava.io.ioexception的maven配置：mkdirs未能创建/some/path，现在解决了它。
我的maven shade插件配置如下：

<plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>2.4.3</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <minimizeJar>true</minimizeJar>
                        <!-- <shadedArtifactAttached>true</shadedArtifactAttached>-->
                        <transformers>
                            <transformer implementation="org.apache.maven.plugins.shade.resource.ApacheLicenseResourceTransformer">
                            </transformer>
                        </transformers>
                        <filters>
                            <filter>
                                <artifact>*:*</artifact>
                                <excludes>
                                    <exclude>log4j.properties</exclude>
                                    <exclude>META-INF/*.SF</exclude>
                                    <exclude>META-INF/*.DSA</exclude>
                                    <exclude>META-INF/*.RSA</exclude>
                                    <exclude>META-INF/LICENSE*</exclude>
                                    <exclude>license/*</exclude>
                                </excludes>
                            </filter>
                            <filter>
                                <artifact>com.typesafe.akka</artifact>
                                <includes>
                                    <include>reference.conf</include>
                                </includes>
                            </filter>
                        </filters>
                    </configuration>
                </execution>
            </executions>
        </plugin>

如果我添加true，它将报告scala class not found，注解掉这个配置。祝你好运。