错误原因：

编译下载最新的maven源代码，但是出现错误。错误如下：

  1. [WARNING] Some problems were encountered while building the effective model for
  2. org.apache.hadoop:hadoop-mapreduce-client-core:jar:3.0.0-SNAPSHOT
  3. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  4. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  5. p-common-trunk\pom.xml, line 278, column 15
  6. [WARNING]
  7. [WARNING] Some problems were encountered while building the effective model for
  8. org.apache.hadoop:hadoop-mapreduce-client-common:jar:3.0.0-SNAPSHOT
  9. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  10. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  11. p-common-trunk\pom.xml, line 278, column 15
  12. [WARNING]
  13. [WARNING] Some problems were encountered while building the effective model for
  14. org.apache.hadoop:hadoop-mapreduce-client-shuffle:jar:3.0.0-SNAPSHOT
  15. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  16. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  17. p-common-trunk\pom.xml, line 278, column 15
  18. [WARNING]
  19. [WARNING] Some problems were encountered while building the effective model for
  20. org.apache.hadoop:hadoop-mapreduce-client-app:jar:3.0.0-SNAPSHOT
  21. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  22. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  23. p-common-trunk\pom.xml, line 278, column 15
  24. [WARNING]
  25. [WARNING] Some problems were encountered while building the effective model for
  26. org.apache.hadoop:hadoop-mapreduce-client-jobclient:jar:3.0.0-SNAPSHOT
  27. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  28. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  29. p-common-trunk\pom.xml, line 278, column 15
  30. [WARNING]
  31. [WARNING] Some problems were encountered while building the effective model for
  32. org.apache.hadoop:hadoop-mapreduce-client-hs:jar:3.0.0-SNAPSHOT
  33. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  34. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  35. p-common-trunk\pom.xml, line 278, column 15
  36. [WARNING]
  37. [WARNING] Some problems were encountered while building the effective model for
  38. org.apache.hadoop:hadoop-mapreduce-client-hs-plugins:jar:3.0.0-SNAPSHOT
  39. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  40. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  41. p-common-trunk\pom.xml, line 278, column 15
  42. [WARNING]
  43. [WARNING] Some problems were encountered while building the effective model for
  44. org.apache.hadoop:hadoop-mapreduce-client:pom:3.0.0-SNAPSHOT
  45. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  46. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  47. p-common-trunk\pom.xml, line 278, column 15
  48. [WARNING]
  49. [WARNING] Some problems were encountered while building the effective model for
  50. org.apache.hadoop:hadoop-mapreduce-examples:jar:3.0.0-SNAPSHOT
  51. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  52. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  53. p-common-trunk\pom.xml, line 278, column 15
  54. [WARNING]
  55. [WARNING] Some problems were encountered while building the effective model for
  56. org.apache.hadoop:hadoop-mapreduce:pom:3.0.0-SNAPSHOT
  57. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  58. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  59. p-common-trunk\pom.xml, line 278, column 15
  60. [WARNING]
  61. [WARNING] Some problems were encountered while building the effective model for
  62. org.apache.hadoop:hadoop-streaming:jar:3.0.0-SNAPSHOT
  63. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  64. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  65. p-common-trunk\pom.xml, line 278, column 15
  66. [WARNING]
  67. [WARNING] Some problems were encountered while building the effective model for
  68. org.apache.hadoop:hadoop-distcp:jar:3.0.0-SNAPSHOT
  69. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  70. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  71. p-common-trunk\pom.xml, line 278, column 15
  72. [WARNING]
  73. [WARNING] Some problems were encountered while building the effective model for
  74. org.apache.hadoop:hadoop-archives:jar:3.0.0-SNAPSHOT
  75. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  76. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  77. p-common-trunk\pom.xml, line 278, column 15
  78. [WARNING]
  79. [WARNING] Some problems were encountered while building the effective model for
  80. org.apache.hadoop:hadoop-rumen:jar:3.0.0-SNAPSHOT
  81. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  82. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  83. p-common-trunk\pom.xml, line 278, column 15
  84. [WARNING]
  85. [WARNING] Some problems were encountered while building the effective model for
  86. org.apache.hadoop:hadoop-gridmix:jar:3.0.0-SNAPSHOT
  87. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  88. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  89. p-common-trunk\pom.xml, line 278, column 15
  90. [WARNING]
  91. [WARNING] Some problems were encountered while building the effective model for
  92. org.apache.hadoop:hadoop-datajoin:jar:3.0.0-SNAPSHOT
  93. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  94. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  95. p-common-trunk\pom.xml, line 278, column 15
  96. [WARNING]
  97. [WARNING] Some problems were encountered while building the effective model for
  98. org.apache.hadoop:hadoop-tools-dist:jar:3.0.0-SNAPSHOT
  99. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  100. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  101. p-common-trunk\pom.xml, line 278, column 15
  102. [WARNING]
  103. [WARNING] Some problems were encountered while building the effective model for
  104. org.apache.hadoop:hadoop-extras:jar:3.0.0-SNAPSHOT
  105. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  106. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  107. p-common-trunk\pom.xml, line 278, column 15
  108. [WARNING]
  109. [WARNING] Some problems were encountered while building the effective model for
  110. org.apache.hadoop:hadoop-pipes:pom:3.0.0-SNAPSHOT
  111. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  112. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  113. p-common-trunk\pom.xml, line 278, column 15
  114. [WARNING]
  115. [WARNING] Some problems were encountered while building the effective model for
  116. org.apache.hadoop:hadoop-tools:pom:3.0.0-SNAPSHOT
  117. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  118. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  119. p-common-trunk\pom.xml, line 278, column 15
  120. [WARNING]
  121. [WARNING] Some problems were encountered while building the effective model for
  122. org.apache.hadoop:hadoop-dist:jar:3.0.0-SNAPSHOT
  123. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  124. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  125. p-common-trunk\pom.xml, line 278, column 15
  126. [WARNING]
  127. [WARNING] Some problems were encountered while building the effective model for
  128. org.apache.hadoop:hadoop-client:jar:3.0.0-SNAPSHOT
  129. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  130. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  131. p-common-trunk\pom.xml, line 278, column 15
  132. [WARNING]
  133. [WARNING] Some problems were encountered while building the effective model for
  134. org.apache.hadoop:hadoop-minicluster:jar:3.0.0-SNAPSHOT
  135. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  136. rcer-plugin is missing. @ org.apache.hadoop:hadoop-main:3.0.0-SNAPSHOT, E:\hadoo
  137. p-common-trunk\pom.xml, line 278, column 15
  138. [WARNING]
  139. [WARNING] Some problems were encountered while building the effective model for
  140. org.apache.hadoop:hadoop-main:pom:3.0.0-SNAPSHOT
  141. [WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-enfo
  142. rcer-plugin is missing. @ line 278, column 15
  143. [WARNING]
  144. [WARNING] It is highly recommended to fix these problems because they threaten t
  145. he stability of your build.
  146. [WARNING]
  147. [WARNING] For this reason, future Maven versions might no longer support buildin
  148. g such malformed projects.
  149. [WARNING]
  150. [INFO] ------------------------------------------------------------------------
  151. [INFO] Reactor Build Order:
  152. [INFO]
  153. [INFO] Apache Hadoop Main
  154. [INFO] Apache Hadoop Project POM
  155. [INFO] Apache Hadoop Annotations
  156. [INFO] Apache Hadoop Project Dist POM
  157. [INFO] Apache Hadoop Assemblies
  158. [INFO] Apache Hadoop Maven Plugins
  159. [INFO] Apache Hadoop MiniKDC
  160. [INFO] Apache Hadoop Auth
  161. [INFO] Apache Hadoop Auth Examples
  162. [INFO] Apache Hadoop Common
  163. [INFO] Apache Hadoop NFS
  164. [INFO] Apache Hadoop Common Project
  165. [INFO] Apache Hadoop HDFS
  166. [INFO] Apache Hadoop HttpFS
  167. [INFO] Apache Hadoop HDFS BookKeeper Journal
  168. [INFO] Apache Hadoop HDFS-NFS
  169. [INFO] Apache Hadoop HDFS Project
  170. [INFO] hadoop-yarn
  171. [INFO] hadoop-yarn-api
  172. [INFO] hadoop-yarn-common
  173. [INFO] hadoop-yarn-server
  174. [INFO] hadoop-yarn-server-common
  175. [INFO] hadoop-yarn-server-nodemanager
  176. [INFO] hadoop-yarn-server-web-proxy
  177. [INFO] hadoop-yarn-server-resourcemanager
  178. [INFO] hadoop-yarn-server-tests
  179. [INFO] hadoop-yarn-client
  180. [INFO] hadoop-yarn-applications
  181. [INFO] hadoop-yarn-applications-distributedshell
  182. [INFO] hadoop-mapreduce-client
  183. [INFO] hadoop-mapreduce-client-core
  184. [INFO] hadoop-yarn-applications-unmanaged-am-launcher
  185. [INFO] hadoop-yarn-site
  186. [INFO] hadoop-yarn-project
  187. [INFO] hadoop-mapreduce-client-common
  188. [INFO] hadoop-mapreduce-client-shuffle
  189. [INFO] hadoop-mapreduce-client-app
  190. [INFO] hadoop-mapreduce-client-hs
  191. [INFO] hadoop-mapreduce-client-jobclient
  192. [INFO] hadoop-mapreduce-client-hs-plugins
  193. [INFO] Apache Hadoop MapReduce Examples
  194. [INFO] hadoop-mapreduce
  195. [INFO] Apache Hadoop MapReduce Streaming
  196. [INFO] Apache Hadoop Distributed Copy
  197. [INFO] Apache Hadoop Archives
  198. [INFO] Apache Hadoop Rumen
  199. [INFO] Apache Hadoop Gridmix
  200. [INFO] Apache Hadoop Data Join
  201. [INFO] Apache Hadoop Extras
  202. [INFO] Apache Hadoop Pipes
  203. [INFO] Apache Hadoop Tools Dist
  204. [INFO] Apache Hadoop Tools
  205. [INFO] Apache Hadoop Distribution
  206. [INFO] Apache Hadoop Client
  207. [INFO] Apache Hadoop Mini-Cluster
  208. [INFO]
  209. [INFO] ------------------------------------------------------------------------
  210. [INFO] Building Apache Hadoop Main 3.0.0-SNAPSHOT
  211. [INFO] ------------------------------------------------------------------------
  212. Downloading: http://172.21.77.119:8081/nexus/content/groups/public/org/apache/ma
  213. ven/plugins/maven-enforcer-plugin/maven-metadata.xml
  214. Downloaded: http://172.21.77.119:8081/nexus/content/groups/public/org/apache/mav
  215. en/plugins/maven-enforcer-plugin/maven-metadata.xml (714 B at 4.4 KB/sec)
  216. [INFO]
  217. [INFO] --- maven-enforcer-plugin:1.3.1:enforce (clean) @ hadoop-main ---
  218. Downloading: http://172.21.77.119:8081/nexus/content/groups/public/commons-lang/
  219. commons-lang/2.3/commons-lang-2.3.jar
  220. [INFO] ------------------------------------------------------------------------
  221. [INFO] Reactor Summary:
  222. [INFO]
  223. [INFO] Apache Hadoop Main ................................ FAILURE [0.531s]
  224. [INFO] Apache Hadoop Project POM ......................... SKIPPED
  225. [INFO] Apache Hadoop Annotations ......................... SKIPPED
  226. [INFO] Apache Hadoop Project Dist POM .................... SKIPPED
  227. [INFO] Apache Hadoop Assemblies .......................... SKIPPED
  228. [INFO] Apache Hadoop Maven Plugins ....................... SKIPPED
  229. [INFO] Apache Hadoop MiniKDC ............................. SKIPPED
  230. [INFO] Apache Hadoop Auth ................................ SKIPPED
  231. [INFO] Apache Hadoop Auth Examples ....................... SKIPPED
  232. [INFO] Apache Hadoop Common .............................. SKIPPED
  233. [INFO] Apache Hadoop NFS ................................. SKIPPED
  234. [INFO] Apache Hadoop Common Project ...................... SKIPPED
  235. [INFO] Apache Hadoop HDFS ................................ SKIPPED
  236. [INFO] Apache Hadoop HttpFS .............................. SKIPPED
  237. [INFO] Apache Hadoop HDFS BookKeeper Journal ............. SKIPPED
  238. [INFO] Apache Hadoop HDFS-NFS ............................ SKIPPED
  239. [INFO] Apache Hadoop HDFS Project ........................ SKIPPED
  240. [INFO] hadoop-yarn ....................................... SKIPPED
  241. [INFO] hadoop-yarn-api ................................... SKIPPED
  242. [INFO] hadoop-yarn-common ................................ SKIPPED
  243. [INFO] hadoop-yarn-server ................................ SKIPPED
  244. [INFO] hadoop-yarn-server-common ......................... SKIPPED
  245. [INFO] hadoop-yarn-server-nodemanager .................... SKIPPED
  246. [INFO] hadoop-yarn-server-web-proxy ...................... SKIPPED
  247. [INFO] hadoop-yarn-server-resourcemanager ................ SKIPPED
  248. [INFO] hadoop-yarn-server-tests .......................... SKIPPED
  249. [INFO] hadoop-yarn-client ................................ SKIPPED
  250. [INFO] hadoop-yarn-applications .......................... SKIPPED
  251. [INFO] hadoop-yarn-applications-distributedshell ......... SKIPPED
  252. [INFO] hadoop-mapreduce-client ........................... SKIPPED
  253. [INFO] hadoop-mapreduce-client-core ...................... SKIPPED
  254. [INFO] hadoop-yarn-applications-unmanaged-am-launcher .... SKIPPED
  255. [INFO] hadoop-yarn-site .................................. SKIPPED
  256. [INFO] hadoop-yarn-project ............................... SKIPPED
  257. [INFO] hadoop-mapreduce-client-common .................... SKIPPED
  258. [INFO] hadoop-mapreduce-client-shuffle ................... SKIPPED
  259. [INFO] hadoop-mapreduce-client-app ....................... SKIPPED
  260. [INFO] hadoop-mapreduce-client-hs ........................ SKIPPED
  261. [INFO] hadoop-mapreduce-client-jobclient ................. SKIPPED
  262. [INFO] hadoop-mapreduce-client-hs-plugins ................ SKIPPED
  263. [INFO] Apache Hadoop MapReduce Examples .................. SKIPPED
  264. [INFO] hadoop-mapreduce .................................. SKIPPED
  265. [INFO] Apache Hadoop MapReduce Streaming ................. SKIPPED
  266. [INFO] Apache Hadoop Distributed Copy .................... SKIPPED
  267. [INFO] Apache Hadoop Archives ............................ SKIPPED
  268. [INFO] Apache Hadoop Rumen ............................... SKIPPED
  269. [INFO] Apache Hadoop Gridmix ............................. SKIPPED
  270. [INFO] Apache Hadoop Data Join ........................... SKIPPED
  271. [INFO] Apache Hadoop Extras .............................. SKIPPED
  272. [INFO] Apache Hadoop Pipes ............................... SKIPPED
  273. [INFO] Apache Hadoop Tools Dist .......................... SKIPPED
  274. [INFO] Apache Hadoop Tools ............................... SKIPPED
  275. [INFO] Apache Hadoop Distribution ........................ SKIPPED
  276. [INFO] Apache Hadoop Client .............................. SKIPPED
  277. [INFO] Apache Hadoop Mini-Cluster ........................ SKIPPED
  278. [INFO] ------------------------------------------------------------------------
  279. [INFO] BUILD FAILURE
  280. [INFO] ------------------------------------------------------------------------
  281. [INFO] Total time: 1.578s
  282. [INFO] Finished at: Fri Aug 23 15:28:05 CST 2013
  283. [INFO] Final Memory: 18M/52M
  284. [INFO] ------------------------------------------------------------------------
  285. [ERROR] Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.
  286. 3.1:enforce (clean) on project hadoop-main: Execution clean of goal org.apache.m
  287. aven.plugins:maven-enforcer-plugin:1.3.1:enforce failed: Plugin org.apache.maven
  288. .plugins:maven-enforcer-plugin:1.3.1 or one of its dependencies could not be res
  289. olved: Could not find artifact commons-lang:commons-lang:jar:2.3 in nexus (http:
  290. //172.21.77.119:8081/nexus/content/groups/public/) -> [Help 1]
  291. [ERROR]
  292. [ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
  293. ch.
  294. [ERROR] Re-run Maven using the -X switch to enable full debug logging.
  295. [ERROR]
  296. [ERROR] For more information about the errors and possible solutions, please rea
  297. d the following articles:
  298. [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResoluti
  299. onException
  300. E:\hadoop-common-trunk>

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-enforcer-plugin:1.

3.1:enforce (clean) on project hadoop-main: Execution clean of goal org.apache.m

aven.plugins:maven-enforcer-plugin:1.3.1:enforce failed: Plugin org.apache.maven

.plugins:maven-enforcer-plugin:1.3.1 or one of its dependencies could not be res

olved:
Could not find artifact commons-lang:commons-lang:jar:2.3 in nexus (http:
//172.21.77.119:8081/nexus/content/groups/public/) -> [Help 1]

具体错误用红色标记出来了。

解决办法

1 去自己的.m2 文件夹下把 xxx.lastUpdated文件全部删掉  （无果）
2 在用maven时加 -U参数  （无果）
3 去nexus里去先"Update Index"再"Expire Cache"  （无果）

同时执行方案（2+3 ）成功。

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