spark项目IDEA打包一直失败

解决方法：

1.Maven内存

2.排查是不是Schema结构太长

可选择将schema拆分为一条一条

3.pom文件

<build>
   <sourceDirectory>src/main/scala</sourceDirectory>

   <!--The plugin below for those who build the project on Mac-->
   <plugins>
      <plugin>
         <groupId>net.alchim31.maven</groupId>
         <artifactId>scala-maven-plugin</artifactId>
         <!--<version>3.4.2</version>-->
         <version>3.2.0</version>
         <executions>
            <execution>
               <goals>
                  <goal>compile</goal>
                  <goal>testCompile</goal>
               </goals>
            </execution>
         </executions>
         <configuration>
            <scalaVersion>${scala.version}</scalaVersion>
            <recompileMode>incremental</recompileMode>
            <useZincServer>true</useZincServer>
            <args>
               <arg>-unchecked</arg>
               <arg>-deprecation</arg>
               <arg>-feature</arg>
            </args>
            <javacArgs>
               <javacArg>-source</javacArg>
               <javacArg>${java.version}</javacArg>
               <javacArg>-target</javacArg>
               <javacArg>${java.version}</javacArg>
            </javacArgs>
         </configuration>
      </plugin>

      <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-dependency-plugin</artifactId>
         <executions>
            <execution>
               <id>copy-dependencies</id>
               <phase>prepare-package</phase>
               <goals>
                  <goal>copy-dependencies</goal>
               </goals>
               <configuration>
                  <outputDirectory>${project.build.directory}/lib</outputDirectory>
                  <overWriteReleases>false</overWriteReleases>
                  <overWriteSnapshots>false</overWriteSnapshots>
                  <overWriteIfNewer>true</overWriteIfNewer>
               </configuration>
            </execution>
         </executions>
      </plugin>
      <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
         <configuration>
            <archive>
               <manifest>
                  <addClasspath>true</addClasspath>
                  <classpathPrefix>lib/</classpathPrefix>
               </manifest>
            </archive>
         </configuration>
      </plugin>
      <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
         <version>3.6.0</version>
         <configuration>
            <source>1.8</source>
            <target>1.8</target>
         </configuration>
      </plugin>
   </plugins>
</build>