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  1. <h1><a name="JobDesigner-IntroducingHueJobDesigner"></a>Introducing Hue Job Designer</h1>
  2. <p>The Job Designer application enables you to create and submit Hadoop Map/Reduce jobs to the Hadoop cluster. You can include variables with your jobs to enable you and other users to enter values for the variables when they run your job. The Job Designer supports streaming and JAR jobs. For more information about Hadoop Map/Reduce, see the <a href="http://archive.cloudera.com/cdh/3/hadoop-0.20.2+320/mapred_tutorial.html">Hadoop MapReduce Tutorial</a>. <font color="red"><em>update tutorial link</em></font></p>
  3. <div class='panelMacro'><table class='noteMacro'><colgroup><col width='24'><col></colgroup><tr><td valign='top'><img src="/static/art/help/warning.gif" width="16" height="16" align="absmiddle" alt="" border="0"></td><td><b>Note:</b> A job's input files must be uploaded to the cluster before you can submit the job.</td></tr></table></div>
  4. <h2><a name="JobDesigner-Contents"></a>Contents</h2>
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  10. <ul>
  11. <li><a href='#JobDesigner-IntroducingHueJobDesigner'>Introducing Hue Job Designer</a></li>
  12. <li><a href='#JobDesigner-JobDesignerInstallationandConfiguration'>Job Designer Installation and Configuration</a></li>
  13. <li><a href='#JobDesigner-StartingJobDesigner'>Starting Job Designer</a></li>
  14. <li><a href='#JobDesigner-InstallingtheJobDesignerSamples'>Installing the Job Designer Samples</a></li>
  15. <li><a href='#JobDesigner-WorkingwithJobDesigns'>Working with Job Designs</a></li>
  16. <ul>
  17. <ul>
  18. <li><a href='#JobDesigner-CreatingaMapReduceJobDesign'>Creating a MapReduce Job Design</a></li>
  19. <li><a href='#JobDesigner-CreatingaStreamingJobDesign'>Creating a Streaming Job Design</a></li>
  20. <li><a href='#JobDesigner-CreatingaJavaJobDesign'>Creating a Java Job Design</a></li>
  21. </ul>
  22. </ul>
  23. <li><a href='#JobDesigner-SubmittingaJobtoaCluster'>Submitting a Job to a Cluster</a></li>
  24. <ul>
  25. <ul>
  26. <li><a href='#JobDesigner-Copying%2CEditing%2CandDeletingaJobDesign'>Copying, Editing, and Deleting a Job Design</a></li>
  27. <li><a href='#JobDesigner-FilteringtheJobDesigns'>Filtering the Job Designs</a></li>
  28. </ul>
  29. </ul>
  30. <li><a href='#JobDesigner-DisplayingJobResults'>Displaying Job Results</a></li>
  31. </ul></div>
  32. <p><br class="atl-forced-newline" /></p>
  33. <p><a name="JobDesigner-JobDesignerInstallationandConfiguration"></a></p>
  34. <h1><a name="JobDesigner-JobDesignerInstallationandConfiguration"></a>Job Designer Installation and Configuration</h1>
  35. <p>Job Designer is one of the applications that is installed as part of Hue. For more information about installing Hue, see <a href="https://ccp.cloudera.com/display/CDHDOC/Hue+Installation">Hue Installation</a>.</p>
  36. <p><a name="JobDesigner-StartingJobDesigner"></a></p>
  37. <h1><a name="JobDesigner-StartingJobDesigner"></a>Starting Job Designer</h1>
  38. <p>To start Job Designer, click the <b>Job Designer</b> tab in the navigation bar at the top of the Hue web page. The <b>Job Designs</b> page opens in the browser.
  39. <br class="atl-forced-newline" /></p>
  40. <p><a name="JobDesigner-InstallingtheJobDesignerSamples"></a></p>
  41. <h1><a name="JobDesigner-InstallingtheJobDesignerSamples"></a>Installing the Job Designer Samples</h1>
  42. <p>The Job Designer sample jobs can help you learn how to use Job Designer. </p>
  43. <p>To install the Job Designer samples, click <b>Install Samples</b> in the <b>Job Designs</b> window and then click <b>Ok</b>. The sample jobs are displayed in the <b>Job Designs</b> window. Job Designer removes the <b>Install Samples</b> button after the samples are installed so you can only install the samples once. <font color="red"><em>has this changed?</em></font>
  44. <br class="atl-forced-newline" /></p>
  45. <p><a name="JobDesigner-WorkingwithJobDesigns"></a></p>
  46. <h1><a name="JobDesigner-WorkingwithJobDesigns"></a>Working with Job Designs</h1>
  47. <p>In the Job Designer, a job design specifies several meta-level properties of a MapReduce job, including the job design name, description, the MapReduce executable scripts or classes, and any parameters for those scripts or classes. You can create three types of job designs: a <a href="#JobDesigner-CreatingaMapreducedesign">MapReduce Job</a>, a <a href="#JobDesigner-CreatingaStreamingJobDesign">streaming job</a> and a <a href="#JobDesigner-CreatingaJavaJobDesign">Java job design</a>.</p>
  48. <p><a name="JobDesigner-CreatingaMapreducedesign"></a></p>
  49. <h3><a name="JobDesigner-CreatingaMapReduceJobDesign"></a>Creating a MapReduce Job Design</h3>
  50. <p>A Hadoop JAR consists of MapReduce functions written in Java.<br/>
  51. <font color="red"><em>how is this different from a Java job?</em></font></p>
  52. <p><b>To create a MapReduce job design:</b></p>
  53. <ol>
  54. <li>In the <b>Job Designs</b> window, click <b>Create MapReduce Design</b>.
  55. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  56. The <b>Job Design (mapreduce type)</b> window opens where you can specify information about the MapReduce job.
  57. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  58. <li>In the <b>Job Design (mapreduce type)</b> window, specify the following information.
  59. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  60. <div class='panelMacro'><table class='noteMacro'><colgroup><col width='24'><col></colgroup><tr><td valign='top'><img src="/static/art/help/warning.gif" width="16" height="16" align="absmiddle" alt="" border="0"></td><td><b>Note:</b> You can use variables of the form <tt>$variable_name</tt> for the <b>Arguments</b> setting described in the following table. When the MapReduce job is run, a dialog box will appear to enable you or users to specify the values of the variables. <font color="red"><em>no longer supported?</em></font></td></tr></table></div>
  61. <p><br class="atl-forced-newline" /></p>
  62. <div class='table-wrap'>
  63. <table class='confluenceTable'><tbody>
  64. <tr>
  65. <th class='confluenceTh'> <b>Setting</b> </th>
  66. <th class='confluenceTh'> <b>Description</b> </th>
  67. </tr>
  68. <tr>
  69. <td class='confluenceTd'> <b>Name</b> </td>
  70. <td class='confluenceTd'> The <b>Name</b> identifies the MapReduce job and it's collection of parameters. </td>
  71. </tr>
  72. <tr>
  73. <td class='confluenceTd'> <b>Description</b> </td>
  74. <td class='confluenceTd'> Specify a description of the MapReduce job. The description is displayed in the dialog box that appears if you specify variables for the job. </td>
  75. </tr>
  76. <tr>
  77. <td class='confluenceTd'> <b>Jar path</b> </td>
  78. <td class='confluenceTd'> Specify the name of the JAR file, including the path. </td>
  79. </tr>
  80. <tr>
  81. <td class='confluenceTd'> <b>Job Properties</b> </td>
  82. <td class='confluenceTd'> Click <b>Add Property</b>, to set a property value: <br/>
  83. &diams;&nbsp;&nbsp; For <b>Property name</b>, enter a configuration variable name. <br/>
  84. &diams;&nbsp;&nbsp; For <b>Value</b>, enter the value you want to use for the variable. </td>
  85. </tr>
  86. <tr>
  87. <td class='confluenceTd'> <b>Files</b> </td>
  88. <td class='confluenceTd'> Click <b>Add File</b>, then enter a file name <font color="red"><em>what files?</em></font> </td>
  89. </tr>
  90. <tr>
  91. <td class='confluenceTd'> <b>Archives</b> </td>
  92. <td class='confluenceTd'> Click <b>Add Archive</b>, then enter an archive name <font color="red"><em>what is this?</em></font> </td>
  93. </tr>
  94. </tbody></table>
  95. </div>
  96. <p><br class="atl-forced-newline" /></p></li>
  97. </ol>
  98. <ol>
  99. <li>Click <b>Save</b> to save the job settings.
  100. <br class="atl-forced-newline" /></li>
  101. </ol>
  102. <p><a name="JobDesigner-CreatingaStreamingJobDesign"></a></p>
  103. <h3><a name="JobDesigner-CreatingaStreamingJobDesign"></a>Creating a Streaming Job Design</h3>
  104. <p>Hadoop streaming jobs enable you to create MapReduce functions in any non-Java language that reads standard Unix input and writes standard Unix output. For more information about Hadoop streaming jobs, see <a href="http://archive.cloudera.com/cdh/3/hadoop-0.20.2+320/streaming.html">needs updated link to info</a>.</p>
  105. <p><b>To create a streaming job design:</b></p>
  106. <ol>
  107. <li>In the <b>Job Designs</b> window, click <b>Create Streaming Design</b>.
  108. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  109. The <b>Job Design (streaming type)</b> window opens to enable you to specify information about the streaming job.
  110. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  111. <li>In the <b>Job Design (streaming type)</b> window, specify the following information.
  112. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  113. <div class='panelMacro'><table class='noteMacro'><colgroup><col width='24'><col></colgroup><tr><td valign='top'><img src="/static/art/help/warning.gif" width="16" height="16" align="absmiddle" alt="" border="0"></td><td><b>Note:</b> You can use variables of the form <tt>$variable_name</tt> for the <b>Mapper</b>, and <b>Reducer</b> settings described in the following table. When the streaming job is run, a dialog box will appear to enable you or users to specify the values of the variables.</td></tr></table></div>
  114. <p><br class="atl-forced-newline" /></p>
  115. <div class='table-wrap'>
  116. <table class='confluenceTable'><tbody>
  117. <tr>
  118. <th class='confluenceTh'> Setting </th>
  119. <th class='confluenceTh'> Description </th>
  120. </tr>
  121. <tr>
  122. <td class='confluenceTd'> <b>Name</b> </td>
  123. <td class='confluenceTd'> The <b>Name</b> identifies the streaming job design including the associated properties and parameters. </td>
  124. </tr>
  125. <tr>
  126. <td class='confluenceTd'> <b>Description</b> </td>
  127. <td class='confluenceTd'> Specify a description of the streaming job design. The description is displayed in the dialog box that appears if you specify variables for the job. </td>
  128. </tr>
  129. <tr>
  130. <td class='confluenceTd'> <b>Mapper</b> </td>
  131. <td class='confluenceTd'> Specify the path to the mapper script or class. If the mapper file is not on the machines on the cluster, use the <b>Files</b> option to pack it as a part of job submission. Equivalent to the Hadoop <tt>-mapper</tt> option. </td>
  132. </tr>
  133. <tr>
  134. <td class='confluenceTd'> <b>Reducer</b> </td>
  135. <td class='confluenceTd'> Specify the path to the reducer script or class. If the reducer file is not on the machines on the cluster, use the <b>Files</b> option to pack it as a part of job submission. Equivalent to the Hadoop <tt>-reducer</tt> option. </td>
  136. </tr>
  137. <tr>
  138. <td class='confluenceTd'> <b>Job Properties</b> </td>
  139. <td class='confluenceTd'> Click <b>Add Property</b>, to set a property value: <br/>
  140. &ordm;&nbsp;&nbsp; For <b>Property name</b>, enter a configuration variable name. <br/>
  141. &ordm;&nbsp;&nbsp; For <b>Value</b>, enter the value you want to use for the variable. </td>
  142. </tr>
  143. <tr>
  144. <td class='confluenceTd'> <b>Files</b> </td>
  145. <td class='confluenceTd'> Click <b>Add File</b>, then enter a file name <font color="red"><em>what files?</em></font> </td>
  146. </tr>
  147. <tr>
  148. <td class='confluenceTd'> <b>Archives</b> </td>
  149. <td class='confluenceTd'> Click <b>Add Archive</b>, then enter an archive name <font color="red"><em>what is this?</em></font> </td>
  150. </tr>
  151. </tbody></table>
  152. </div>
  153. <p><br class="atl-forced-newline" /></p></li>
  154. </ol>
  155. <p><br class="atl-forced-newline" /></p>
  156. <ol>
  157. <li>Click <b>Save</b> to save the job settings.
  158. <br class="atl-forced-newline" /></li>
  159. </ol>
  160. <p><a name="JobDesigner-CreatingaJavaJobDesign"></a></p>
  161. <h3><a name="JobDesigner-CreatingaJavaJobDesign"></a>Creating a Java Job Design</h3>
  162. <p>A Hadoop JAR consists of MapReduce functions written in Java.<br/>
  163. <font color="red"><em>how is this different from a MapReduce job?</em></font></p>
  164. <p><b>To create a Java job design:</b></p>
  165. <ol>
  166. <li>In the <b>Job Designs</b> window, click <b>Create Java Design</b>.
  167. <br class="atl-forced-newline" />
  168. <br class="atl-forced-newline" />
  169. The <b>Job Design (java type)</b> window opens where you can specify information about the JAR job.
  170. <br class="atl-forced-newline" />
  171. <br class="atl-forced-newline" /></li>
  172. <li>In the <b>Job Design (java type)</b> window, specify the following information.
  173. <br class="atl-forced-newline" />
  174. <br class="atl-forced-newline" />
  175. <div class='panelMacro'><table class='noteMacro'><colgroup><col width='24'><col></colgroup><tr><td valign='top'><img src="/static/art/help/warning.gif" width="16" height="16" align="absmiddle" alt="" border="0"></td><td><b>Note:</b> You can use variables of the form <tt>$variable_name</tt> for the <b>Args</b> setting described in the following table. When the JAR job is run, a dialog box will appear to enable you or users to specify the values of the variables.</td></tr></table></div>
  176. <p><br class="atl-forced-newline" /></p>
  177. <div class='table-wrap'>
  178. <table class='confluenceTable'><tbody>
  179. <tr>
  180. <th class='confluenceTh'> <b>Setting</b> </th>
  181. <th class='confluenceTh'> <b>Description</b> </th>
  182. </tr>
  183. <tr>
  184. <td class='confluenceTd'> <b>Name</b> </td>
  185. <td class='confluenceTd'> The <b>Name</b> identifies the Java job and it's collection of parameters. </td>
  186. </tr>
  187. <tr>
  188. <td class='confluenceTd'> <b>Description</b> </td>
  189. <td class='confluenceTd'> Specify a description of the java job. The description is displayed in the dialog box that appears if you specify variables for the job. </td>
  190. </tr>
  191. <tr>
  192. <td class='confluenceTd'> <b>Jar path</b> </td>
  193. <td class='confluenceTd'> Specify the name of the JAR file, including the path. </td>
  194. </tr>
  195. <tr>
  196. <td class='confluenceTd'> <b>Main class</b> </td>
  197. <td class='confluenceTd'> Specify the (name of?) the Main class to invoke the program. </td>
  198. </tr>
  199. <tr>
  200. <td class='confluenceTd'> <b>Args</b> </td>
  201. <td class='confluenceTd'> Specify the arguments you want to pass to the running JAR job. </td>
  202. </tr>
  203. <tr>
  204. <td class='confluenceTd'> <b>Java opts</b> </td>
  205. <td class='confluenceTd'> Specify any Java options you want to specify as part of the job. </td>
  206. </tr>
  207. <tr>
  208. <td class='confluenceTd'> <b>Job Properties</b> </td>
  209. <td class='confluenceTd'> Click <b>Add Property</b>, to set a property value: <br/>
  210. &raquo;&nbsp;&nbsp; For <b>Property name</b>, enter a configuration variable name. <br/>
  211. &raquo;&nbsp;&nbsp; For <b>Value</b>, enter the value you want to use for the variable. </td>
  212. </tr>
  213. <tr>
  214. <td class='confluenceTd'> <b>Files</b> </td>
  215. <td class='confluenceTd'> Click <b>Add File</b>, then enter a file name <font color="red"><em>what files?</em></font> </td>
  216. </tr>
  217. <tr>
  218. <td class='confluenceTd'> <b>Archives</b> </td>
  219. <td class='confluenceTd'> Click <b>Add Archive</b>, then enter an archive name <font color="red"><em>what is this?</em></font> </td>
  220. </tr>
  221. </tbody></table>
  222. </div>
  223. <p><br class="atl-forced-newline" /></p></li>
  224. </ol>
  225. <ol>
  226. <li>Click <b>Save</b> to save the job settings.</li>
  227. </ol>
  228. <p><a name="JobDesigner-SubmittingaJobtoaCluster"></a></p>
  229. <h1><a name="JobDesigner-SubmittingaJobtoaCluster"></a>Submitting a Job to a Cluster</h1>
  230. <p><b>To submit a job to a cluster:</b></p>
  231. <ol>
  232. <li>In the <b>Job Designs</b> window, click <b>Designs</b> in the upper left corner.
  233. <br class="atl-forced-newline" />
  234. Your jobs and other users' jobs are displayed in the <b>Job Designs</b> window.
  235. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  236. <li>In the <b>Job Design</b> window, click the <b>Submit</b> button for the job you want to submit.
  237. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  238. <li>If the job contains variables, enter the information requested in the dialog box that appears.
  239. <br class="atl-forced-newline" />
  240. For example, the sample streaming PI Calculator job displays the following dialog box to enable you to specify the settings for <b>Iterations per Mapper</b> and <b>Num of mappers</b>.
  241. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  242. <li>Click <b>Submit</b> to submit the job.
  243. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  244. After the job is complete, the Job Designer displays the results of the job including the last 10 KB of <tt>stdout</tt> and <tt>stderr</tt> for a streaming job. For example, after the sample streaming PI Calculator job is complete, the following results appear.
  245. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  246. For information about displaying job results, see <a href="#JobDesigner-DisplayingJobResults">Displaying Job Results</a>.
  247. <br class="atl-forced-newline" /></li>
  248. </ol>
  249. <p><a name="JobDesigner-Copying%2CEditing%2CandDeletingaJobDesign"></a></p>
  250. <h3><a name="JobDesigner-Copying%2CEditing%2CandDeletingaJobDesign"></a>Copying, Editing, and Deleting a Job Design</h3>
  251. <p>If you want to edit and use a job but you don't own it, you can make a copy of it and then edit and use the copied job.</p>
  252. <p><b>To copy a job design:</b></p>
  253. <ol>
  254. <li>In the <b>Job Designs</b> window, click <b>Designs</b>.
  255. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  256. The jobs are displayed in the <b>Job Designs</b> window.
  257. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  258. <li>Click the <b>Clone</b> button to the right of the job you want to copy.
  259. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  260. <li>In the <b>Job Design Editor</b> window, change the settings and then click <b>Save</b> to save the job settings.</li>
  261. </ol>
  262. <p><b>To edit a job design:</b></p>
  263. <ol>
  264. <li>In the <b>Job Designs</b> window, click <b>Designs</b>.
  265. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  266. The jobs are displayed in the <b>Job Designs</b> window.
  267. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  268. <li>Click the <b>Edit</b> button to the right of the job you want to copy.
  269. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  270. <li>In the <b>Job Design</b> window, change the settings and then click <b>Save</b> to save the job settings.</li>
  271. </ol>
  272. <p><b>To delete a job design:</b></p>
  273. <ol>
  274. <li>In the <b>Job Designs</b> window, click <b>job designs</b>.
  275. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  276. The jobs are displayed in the <b>Job Designs</b> window.
  277. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  278. <li>In the <b>Job Designs</b> window, select the job, right click, and choose <b>Delete</b> from the context menu.
  279. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  280. <li>Click <b>Ok</b> to confirm the deletion.</li>
  281. </ol>
  282. <p><a name="JobDesigner-FilteringtheJobDesigns"></a></p>
  283. <h3><a name="JobDesigner-FilteringtheJobDesigns"></a>Filtering the Job Designs</h3>
  284. <p>You can filter the <b>Job Designs</b> by owner, by job name, or both.</p>
  285. <p><b>To filter the Job Designs list:</b></p>
  286. <ol>
  287. <li>In the <b>Job Designs</b> window, click <b>job designs</b>.
  288. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  289. <li>Enter the name of the owner, job name, or both in the query search boxes at the top of the <b>Job Designs</b> window.
  290. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  291. <b>Job Designer</b> displays the jobs that match the filter criteria.
  292. <br class="atl-forced-newline" /> <br class="atl-forced-newline" /></li>
  293. </ol>
  294. <p><a name="JobDesigner-DisplayingJobResults"></a></p>
  295. <h1><a name="JobDesigner-DisplayingJobResults"></a>Displaying Job Results</h1>
  296. <p><b>To display job results:</b></p>
  297. <ol>
  298. <li>In the <b>Job Designs</b> window, click the <b>History</b> tab.
  299. <br class="atl-forced-newline" />
  300. <br class="atl-forced-newline" />
  301. The jobs are displayed in the <b>Recently Launched Jobs</b> list.
  302. <br class="atl-forced-newline" />
  303. <br class="atl-forced-newline" /></li>
  304. <li>To display details about a job, double-click it or click <font color="red">??</font> next to the task.
  305. <br class="atl-forced-newline" /> <br class="atl-forced-newline" />
  306. The results of the job appear.
  307. <br class="atl-forced-newline" />
  308. <br class="atl-forced-newline" /></li>
  309. <li>To display details about the job, click the job name under the <b>Launched Jobs</b> heading at the top of the results window.
  310. <br class="atl-forced-newline" />
  311. <br class="atl-forced-newline" />
  312. The following Job Browser screen appears with details about the job.
  313. <br class="atl-forced-newline" />
  314. <br class="atl-forced-newline" /></li>
  315. <li>To display details about a task, double-click a task under <b>Recent Tasks</b> or click this <font color="red">??</font> next to the task.
  316. <br class="atl-forced-newline" />
  317. <br class="atl-forced-newline" /></li>
  318. <li>To view other types of job information, click the <b>Metadata</b> and <b>Counters</b> tabs.
  319. <br class="atl-forced-newline" />
  320. <br class="atl-forced-newline" /></li>
  321. <li>To view the output of the job, click the link next to <b>Output</b> at the top of the screen.
  322. <br class="atl-forced-newline" />
  323. <br class="atl-forced-newline" /></li>
  324. <li>To view status information of all jobs, click the <b>view all tasks</b> link.
  325. <br class="atl-forced-newline" />
  326. <br class="atl-forced-newline" />
  327. Click here for more information about using Job Browser.</li>
  328. </ol>
  329. </td>
  330. </tr>
  331. </table>
  332. </body>
  333. </html>