编译spark源码，报错

[hihenianchun]

1. 我先下载了spark-1.3.0-cdh5.4.4-src.tar.gz源码文件，并解压到目录spark-1.3.0-cdh5.4.4
2. 按照官网上的命令，在目录spark-1.3.0-cdh5.4.4下运行：
export MAVEN_OPTS="-Xmx2g -XX:MaxPermSize=512M -XX:ReservedCodeCacheSize=512m"
mvn -Pyarn -DskipTests clean package
3. 但是，最后build failure，下面是出错时的标准输出：
[INFO] --- maven-source-plugin:2.2.1:jar-no-fork (create-source-jar) @ spark-mllib_2.10 ---
[INFO] Building jar: D:\workspaceIntellijIDEA\spark-1.3.0-cdh5.4.4\mllib\target\spark-mllib_2.10-1.3.0-cdh5.4.4-sources.jar
[INFO]
[INFO] --- scalastyle-maven-plugin:0.4.0:check (default) @ spark-mllib_2.10 ---
error file=D:\workspaceIntellijIDEA\spark-1.3.0-cdh5.4.4\mllib\src\main\scala\org\apache\spark\mllib\clustering\LDAModel.scala message=Input length = 2
Saving to outputFile=D:\workspaceIntellijIDEA\spark-1.3.0-cdh5.4.4\mllib\scalastyle-output.xml
Processed 143 file(s)
Found 1 errors
Found 0 warnings
Found 0 infos
Finished in 3302 ms
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] Spark Project Parent POM ........................... SUCCESS [ 14.327 s]
[INFO] Spark Project Networking ........................... SUCCESS [ 33.203 s]
[INFO] Spark Project Shuffle Streaming Service ............ SUCCESS [ 14.178 s]
[INFO] Spark Project Core ................................. SUCCESS [06:45 min]
[INFO] Spark Project Bagel ................................ SUCCESS [ 46.421 s]
[INFO] Spark Project GraphX ............................... SUCCESS [01:20 min]
[INFO] Spark Project Streaming ............................ SUCCESS [02:19 min]
[INFO] Spark Project Catalyst ............................. SUCCESS [02:34 min]
[INFO] Spark Project SQL .................................. SUCCESS [03:08 min]
[INFO] Spark Project ML Library ........................... FAILURE [02:47 min]
[INFO] Spark Project Tools ................................ SKIPPED
[INFO] Spark Project Hive ................................. SKIPPED
[INFO] Spark Project REPL ................................. SKIPPED
[INFO] Spark Project Assembly ............................. SKIPPED
[INFO] Spark Project External Twitter ..................... SKIPPED
[INFO] Spark Project External Flume Sink .................. SKIPPED
[INFO] Spark Project External Flume ....................... SKIPPED
[INFO] Spark Project External MQTT ........................ SKIPPED
[INFO] Spark Project External ZeroMQ ...................... SKIPPED
[INFO] Spark Project External Kafka ....................... SKIPPED
[INFO] Spark Project Examples ............................. SKIPPED
[INFO] Spark Project External Kafka Assembly .............. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 20:44 min
[INFO] Finished at: 2015-08-08T20:41:07+08:00
[INFO] Final Memory: 82M/614M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.scalastyle:scalastyle-maven-plugin:0.4.0:check (default) on project spark-mllib_2.10: Failed during scalastyle execution: You have 1 Scalastyle violation(s). -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :spark-mllib_2.10

[stark_summer]

如果你没有改pom.xml文件，那我怀疑是网络的问题，重新编译一次~

[FightForProgrammer]

失败也是正常的。要保证网络。