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| 193 | <h1>åœä»€æå</h1> |
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| 207 | <li> |
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| 208 | <a href="#archive"> archive </a> |
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| 211 | <a href="#distcp"> distcp </a> |
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| 212 | </li> |
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| 213 | <li> |
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| 214 | <a href="#fs"> fs </a> |
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| 215 | </li> |
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| 216 | <li> |
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| 217 | <a href="#fsck"> fsck </a> |
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| 218 | </li> |
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| 219 | <li> |
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| 220 | <a href="#jar"> jar </a> |
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| 221 | </li> |
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| 222 | <li> |
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| 223 | <a href="#job"> job </a> |
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| 224 | </li> |
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| 225 | <li> |
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| 226 | <a href="#pipes"> pipes </a> |
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| 227 | </li> |
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| 228 | <li> |
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| 229 | <a href="#version"> version </a> |
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| 230 | </li> |
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| 231 | <li> |
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| 232 | <a href="#CLASSNAME"> CLASSNAME </a> |
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| 233 | </li> |
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| 235 | </li> |
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| 236 | <li> |
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| 239 | <li> |
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| 240 | <a href="#balancer"> balancer </a> |
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| 241 | </li> |
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| 242 | <li> |
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| 243 | <a href="#daemonlog"> daemonlog </a> |
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| 244 | </li> |
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| 245 | <li> |
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| 246 | <a href="#datanode"> datanode</a> |
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| 247 | </li> |
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| 248 | <li> |
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| 249 | <a href="#dfsadmin"> dfsadmin </a> |
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| 250 | </li> |
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| 251 | <li> |
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| 252 | <a href="#jobtracker"> jobtracker </a> |
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| 253 | </li> |
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| 254 | <li> |
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| 255 | <a href="#namenode"> namenode </a> |
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| 256 | </li> |
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| 257 | <li> |
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| 258 | <a href="#secondarynamenode"> secondarynamenode </a> |
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| 259 | </li> |
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| 260 | <li> |
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| 261 | <a href="#tasktracker"> tasktracker </a> |
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| 262 | </li> |
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| 263 | </ul> |
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| 264 | </li> |
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| 265 | </ul> |
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| 266 | </div> |
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| 267 | |
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| 268 | <a name="N1000D"></a><a name="%E6%A6%82%E8%BF%B0"></a> |
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| 269 | <h2 class="h3">æŠè¿°</h2> |
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| 270 | <div class="section"> |
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| 271 | <p> |
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| 272 | ææçhadoopåœä»€åç±bin/hadoopèæ¬åŒåãäžæå®åæ°è¿è¡hadoopèæ¬äŒæå°ææåœä»€çæè¿°ã |
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| 273 | </p> |
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| 274 | <p> |
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| 275 | |
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| 276 | <span class="codefrag">çšæ³ïŒhadoop [--config confdir] [COMMAND] [GENERIC_OPTIONS] [COMMAND_OPTIONS]</span> |
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| 277 | |
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| 278 | </p> |
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| 279 | <p> |
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| 280 | Hadoopæäžäžªé项解ææ¡æ¶çšäºè§£æäžè¬çé项åè¿è¡ç±»ã |
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| 281 | </p> |
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| 282 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
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| 283 | |
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| 284 | <tr> |
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| 285 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿° </th> |
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| 286 | </tr> |
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| 287 | |
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| 288 | |
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| 289 | <tr> |
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| 290 | |
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| 291 | <td colspan="1" rowspan="1"><span class="codefrag">--config confdir</span></td> |
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| 292 | <td colspan="1" rowspan="1">èŠç猺çé
眮ç®åœã猺çæ¯${HADOOP_HOME}/confã</td> |
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| 293 | |
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| 294 | </tr> |
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| 295 | |
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| 296 | <tr> |
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| 297 | |
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| 298 | <td colspan="1" rowspan="1"><span class="codefrag">GENERIC_OPTIONS</span></td> |
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| 299 | <td colspan="1" rowspan="1">å€äžªåœä»€éœæ¯æçéçšé项ã</td> |
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| 300 | |
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| 301 | </tr> |
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| 302 | |
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| 303 | <tr> |
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| 304 | |
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| 305 | <td colspan="1" rowspan="1"><span class="codefrag">COMMAND</span> |
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| 306 | <br> |
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| 307 | <span class="codefrag">åœä»€é项S</span></td> |
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| 308 | <td colspan="1" rowspan="1">åç§åæ ·çåœä»€åå®ä»¬çé项äŒåšäžé¢æå°ãè¿äºåœä»€è¢«å䞺 |
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| 309 | <a href="commands_manual.html#%E7%94%A8%E6%88%B7%E5%91%BD%E4%BB%A4">çšæ·åœä»€</a> |
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| 310 | <a href="commands_manual.html#%E7%AE%A1%E7%90%86%E5%91%BD%E4%BB%A4">管çåœä»€</a>䞀ç»ã</td> |
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| 311 | |
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| 312 | </tr> |
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| 313 | |
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| 314 | </table> |
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| 315 | <a name="N10061"></a><a name="%E5%B8%B8%E8%A7%84%E9%80%89%E9%A1%B9"></a> |
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| 316 | <h3 class="h4">åžžè§é项</h3> |
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| 317 | <p> |
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| 318 | äžé¢çé项被 |
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| 319 | <a href="commands_manual.html#dfsadmin">dfsadmin</a>, |
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| 320 | <a href="commands_manual.html#fs">fs</a>, <a href="commands_manual.html#fsck">fsck</a>å |
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| 321 | <a href="commands_manual.html#job">job</a>æ¯æã |
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| 322 | åºçšçšåºèŠå®ç° |
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| 323 | <a href="http://hadoop.apache.org/core/docs/r0.18.2/api/org/apache/hadoop/util/Tool.html">Tool</a>æ¥æ¯æ |
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| 324 | <a href="http://hadoop.apache.org/core/docs/r0.18.2/api/org/apache/hadoop/util/GenericOptionsParser.html"> |
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| 325 | åžžè§é项</a>ã |
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| 326 | </p> |
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| 327 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
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| 328 | |
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| 329 | <tr> |
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| 330 | <th colspan="1" rowspan="1"> GENERIC_OPTION </th><th colspan="1" rowspan="1"> æè¿° </th> |
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| 331 | </tr> |
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| 332 | |
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| 333 | |
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| 334 | <tr> |
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| 335 | |
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| 336 | <td colspan="1" rowspan="1"><span class="codefrag">-conf <configuration file></span></td> |
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| 337 | <td colspan="1" rowspan="1">æå®åºçšçšåºçé
眮æ件ã</td> |
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| 338 | |
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| 339 | </tr> |
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| 340 | |
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| 341 | <tr> |
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| 342 | |
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| 343 | <td colspan="1" rowspan="1"><span class="codefrag">-D <property=value></span></td> |
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| 344 | <td colspan="1" rowspan="1">䞺æå®propertyæå®åŒvalueã</td> |
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| 345 | |
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| 346 | </tr> |
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| 347 | |
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| 348 | <tr> |
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| 349 | |
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| 350 | <td colspan="1" rowspan="1"><span class="codefrag">-fs <local|namenode:port></span></td> |
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| 351 | <td colspan="1" rowspan="1">æå®namenodeã</td> |
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| 352 | |
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| 353 | </tr> |
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| 354 | |
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| 355 | <tr> |
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| 356 | |
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| 357 | <td colspan="1" rowspan="1"><span class="codefrag">-jt <local|jobtracker:port></span></td> |
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| 358 | <td colspan="1" rowspan="1">æå®job trackerãåªéçšäº<a href="commands_manual.html#job">job</a>ã</td> |
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| 359 | |
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| 360 | </tr> |
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| 361 | |
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| 362 | <tr> |
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| 363 | |
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| 364 | <td colspan="1" rowspan="1"><span class="codefrag">-files <éå·åéçæ件åè¡š></span></td> |
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| 365 | <td colspan="1" rowspan="1">æå®èŠæ·èŽå°map reduceé矀çæ件çéå·åéçåè¡šã |
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| 366 | åªéçšäº<a href="commands_manual.html#job">job</a>ã</td> |
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| 367 | |
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| 368 | </tr> |
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| 369 | |
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| 370 | <tr> |
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| 371 | |
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| 372 | <td colspan="1" rowspan="1"><span class="codefrag">-libjars <éå·åéçjaråè¡š></span></td> |
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| 373 | <td colspan="1" rowspan="1">æå®èŠå
å«å°classpathäžçjaræ件çéå·åéçåè¡šã |
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| 374 | åªéçšäº<a href="commands_manual.html#job">job</a>ã</td> |
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| 375 | |
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| 376 | </tr> |
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| 377 | |
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| 378 | <tr> |
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| 379 | |
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| 380 | <td colspan="1" rowspan="1"><span class="codefrag">-archives <éå·åéçarchiveåè¡š></span></td> |
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| 381 | <td colspan="1" rowspan="1">æå®èŠè¢«è§£åå°è®¡ç®èç¹äžçæ¡£æ¡æ件çéå·åå²çåè¡šã |
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| 382 | åªéçšäº<a href="commands_manual.html#job">job</a>ã</td> |
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| 383 | |
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| 384 | </tr> |
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| 385 | |
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| 386 | </table> |
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| 387 | </div> |
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| 388 | |
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| 389 | |
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| 390 | <a name="N10103"></a><a name="%E7%94%A8%E6%88%B7%E5%91%BD%E4%BB%A4"></a> |
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| 391 | <h2 class="h3"> çšæ·åœä»€ </h2> |
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| 392 | <div class="section"> |
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| 393 | <p>hadoopé矀çšæ·çåžžçšåœä»€ã</p> |
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| 394 | <a name="N1010C"></a><a name="archive"></a> |
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| 395 | <h3 class="h4"> archive </h3> |
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| 396 | <p> |
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| 397 | å建äžäžªhadoopæ¡£æ¡æ件ãåè <a href="hadoop_archives.html">Hadoop Archives</a>. |
---|
| 398 | </p> |
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| 399 | <p> |
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| 400 | |
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| 401 | <span class="codefrag">çšæ³ïŒhadoop archive -archiveName NAME <src>* <dest></span> |
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| 402 | |
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| 403 | </p> |
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| 404 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
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| 405 | |
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| 406 | <tr> |
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| 407 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
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| 408 | </tr> |
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| 409 | |
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| 410 | <tr> |
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| 411 | |
---|
| 412 | <td colspan="1" rowspan="1"><span class="codefrag">-archiveName NAME</span></td> |
---|
| 413 | <td colspan="1" rowspan="1">èŠå建çæ¡£æ¡çååã</td> |
---|
| 414 | |
---|
| 415 | </tr> |
---|
| 416 | |
---|
| 417 | <tr> |
---|
| 418 | |
---|
| 419 | <td colspan="1" rowspan="1"><span class="codefrag">src</span></td> |
---|
| 420 | <td colspan="1" rowspan="1">æ件系ç»çè·¯åŸåïŒåéåžžå«æ£å衚蟟çäžæ ·ã</td> |
---|
| 421 | |
---|
| 422 | </tr> |
---|
| 423 | |
---|
| 424 | <tr> |
---|
| 425 | |
---|
| 426 | <td colspan="1" rowspan="1"><span class="codefrag">dest</span></td> |
---|
| 427 | <td colspan="1" rowspan="1">ä¿åæ¡£æ¡æ件çç®æ ç®åœã</td> |
---|
| 428 | |
---|
| 429 | </tr> |
---|
| 430 | |
---|
| 431 | </table> |
---|
| 432 | <a name="N10157"></a><a name="distcp"></a> |
---|
| 433 | <h3 class="h4"> distcp </h3> |
---|
| 434 | <p> |
---|
| 435 | éåœå°æ·èŽæ件æç®åœãåè<a href="distcp.html">DistCpæå</a>以è·åçå€ä¿¡æ¯ã |
---|
| 436 | </p> |
---|
| 437 | <p> |
---|
| 438 | |
---|
| 439 | <span class="codefrag">çšæ³ïŒhadoop distcp <srcurl> <desturl></span> |
---|
| 440 | |
---|
| 441 | </p> |
---|
| 442 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 443 | |
---|
| 444 | <tr> |
---|
| 445 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 446 | </tr> |
---|
| 447 | |
---|
| 448 | |
---|
| 449 | <tr> |
---|
| 450 | |
---|
| 451 | <td colspan="1" rowspan="1"><span class="codefrag">srcurl</span></td> |
---|
| 452 | <td colspan="1" rowspan="1">æºUrl</td> |
---|
| 453 | |
---|
| 454 | </tr> |
---|
| 455 | |
---|
| 456 | <tr> |
---|
| 457 | |
---|
| 458 | <td colspan="1" rowspan="1"><span class="codefrag">desturl</span></td> |
---|
| 459 | <td colspan="1" rowspan="1">ç®æ Url</td> |
---|
| 460 | |
---|
| 461 | </tr> |
---|
| 462 | |
---|
| 463 | </table> |
---|
| 464 | <a name="N10194"></a><a name="fs"></a> |
---|
| 465 | <h3 class="h4"> fs </h3> |
---|
| 466 | <p> |
---|
| 467 | |
---|
| 468 | <span class="codefrag">çšæ³ïŒhadoop fs [</span><a href="commands_manual.html#%E5%B8%B8%E8%A7%84%E9%80%89%E9%A1%B9">GENERIC_OPTIONS</a><span class="codefrag">] |
---|
| 469 | [COMMAND_OPTIONS]</span> |
---|
| 470 | |
---|
| 471 | </p> |
---|
| 472 | <p> |
---|
| 473 | è¿è¡äžäžªåžžè§çæ件系ç»å®¢æ·ç«¯ã |
---|
| 474 | </p> |
---|
| 475 | <p> |
---|
| 476 | åç§åœä»€é项å¯ä»¥åè<a href="hdfs_shell.html">HDFS Shellæå</a>ã |
---|
| 477 | </p> |
---|
| 478 | <a name="N101B0"></a><a name="fsck"></a> |
---|
| 479 | <h3 class="h4"> fsck </h3> |
---|
| 480 | <p> |
---|
| 481 | è¿è¡HDFSæ件系ç»æ£æ¥å·¥å
·ãåè<a href="hdfs_user_guide.html#fsck">Fsck</a>äºè§£æŽå€ã |
---|
| 482 | </p> |
---|
| 483 | <p> |
---|
| 484 | <span class="codefrag">çšæ³ïŒhadoop fsck [</span><a href="commands_manual.html#%E5%B8%B8%E8%A7%84%E9%80%89%E9%A1%B9">GENERIC_OPTIONS</a><span class="codefrag">] |
---|
| 485 | <path> [-move | -delete | -openforwrite] [-files [-blocks |
---|
| 486 | [-locations | -racks]]]</span> |
---|
| 487 | </p> |
---|
| 488 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 489 | |
---|
| 490 | <tr> |
---|
| 491 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿° </th> |
---|
| 492 | </tr> |
---|
| 493 | |
---|
| 494 | <tr> |
---|
| 495 | |
---|
| 496 | <td colspan="1" rowspan="1"><span class="codefrag"><path></span></td> |
---|
| 497 | <td colspan="1" rowspan="1">æ£æ¥çèµ·å§ç®åœã</td> |
---|
| 498 | |
---|
| 499 | </tr> |
---|
| 500 | |
---|
| 501 | <tr> |
---|
| 502 | |
---|
| 503 | <td colspan="1" rowspan="1"><span class="codefrag">-move</span></td> |
---|
| 504 | <td colspan="1" rowspan="1">移åšåææ件å°/lost+found</td> |
---|
| 505 | |
---|
| 506 | </tr> |
---|
| 507 | |
---|
| 508 | <tr> |
---|
| 509 | |
---|
| 510 | <td colspan="1" rowspan="1"><span class="codefrag">-delete</span></td> |
---|
| 511 | <td colspan="1" rowspan="1">å é€åææ件ã</td> |
---|
| 512 | |
---|
| 513 | </tr> |
---|
| 514 | |
---|
| 515 | <tr> |
---|
| 516 | |
---|
| 517 | <td colspan="1" rowspan="1"><span class="codefrag">-openforwrite</span></td> |
---|
| 518 | <td colspan="1" rowspan="1">æå°åºåæåŒçæ件ã</td> |
---|
| 519 | |
---|
| 520 | </tr> |
---|
| 521 | |
---|
| 522 | <tr> |
---|
| 523 | |
---|
| 524 | <td colspan="1" rowspan="1"><span class="codefrag">-files</span></td> |
---|
| 525 | <td colspan="1" rowspan="1">æå°åºæ£è¢«æ£æ¥çæ件ã</td> |
---|
| 526 | |
---|
| 527 | </tr> |
---|
| 528 | |
---|
| 529 | <tr> |
---|
| 530 | |
---|
| 531 | <td colspan="1" rowspan="1"><span class="codefrag">-blocks</span></td> |
---|
| 532 | <td colspan="1" rowspan="1">æå°åºåä¿¡æ¯æ¥åã</td> |
---|
| 533 | |
---|
| 534 | </tr> |
---|
| 535 | |
---|
| 536 | <tr> |
---|
| 537 | |
---|
| 538 | <td colspan="1" rowspan="1"><span class="codefrag">-locations</span></td> |
---|
| 539 | <td colspan="1" rowspan="1">æå°åºæ¯äžªåçäœçœ®ä¿¡æ¯ã</td> |
---|
| 540 | |
---|
| 541 | </tr> |
---|
| 542 | |
---|
| 543 | <tr> |
---|
| 544 | |
---|
| 545 | <td colspan="1" rowspan="1"><span class="codefrag">-racks</span></td> |
---|
| 546 | <td colspan="1" rowspan="1">æå°åºdata-nodeççœç»ææç»æã</td> |
---|
| 547 | |
---|
| 548 | </tr> |
---|
| 549 | |
---|
| 550 | </table> |
---|
| 551 | <a name="N10244"></a><a name="jar"></a> |
---|
| 552 | <h3 class="h4"> jar </h3> |
---|
| 553 | <p> |
---|
| 554 | è¿è¡jaræ件ãçšæ·å¯ä»¥æä»ä»¬çMap Reduce代ç æç»å°jaræ件äžïŒäœ¿çšè¿äžªåœä»€æ§è¡ã |
---|
| 555 | </p> |
---|
| 556 | <p> |
---|
| 557 | |
---|
| 558 | <span class="codefrag">çšæ³ïŒhadoop jar <jar> [mainClass] args...</span> |
---|
| 559 | |
---|
| 560 | </p> |
---|
| 561 | <p> |
---|
| 562 | streamingäœäžæ¯éè¿è¿äžªåœä»€æ§è¡çãåè<a href="streaming.html#%E5%85%B6%E4%BB%96%E4%BE%8B%E5%AD%90">Streaming examples</a>äžçäŸåã |
---|
| 563 | </p> |
---|
| 564 | <p> |
---|
| 565 | Word countäŸåä¹æ¯éè¿jaråœä»€è¿è¡çãåè<a href="mapred_tutorial.html#%E7%94%A8%E6%B3%95">Wordcount example</a>ã |
---|
| 566 | </p> |
---|
| 567 | <a name="N10262"></a><a name="job"></a> |
---|
| 568 | <h3 class="h4"> job </h3> |
---|
| 569 | <p> |
---|
| 570 | çšäºåMap Reduceäœäžäº€äºååœä»€ã |
---|
| 571 | </p> |
---|
| 572 | <p> |
---|
| 573 | |
---|
| 574 | <span class="codefrag">çšæ³ïŒhadoop job [</span><a href="commands_manual.html#%E5%B8%B8%E8%A7%84%E9%80%89%E9%A1%B9">GENERIC_OPTIONS</a><span class="codefrag">] |
---|
| 575 | [-submit <job-file>] | [-status <job-id>] | |
---|
| 576 | [-counter <job-id> <group-name> <counter-name>] | [-kill <job-id>] | |
---|
| 577 | [-events <job-id> <from-event-#> <#-of-events>] | [-history [all] <jobOutputDir>] | |
---|
| 578 | [-list [all]] | [-kill-task <task-id>] | [-fail-task <task-id>]</span> |
---|
| 579 | |
---|
| 580 | </p> |
---|
| 581 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 582 | |
---|
| 583 | <tr> |
---|
| 584 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 585 | </tr> |
---|
| 586 | |
---|
| 587 | |
---|
| 588 | <tr> |
---|
| 589 | |
---|
| 590 | <td colspan="1" rowspan="1"><span class="codefrag">-submit <job-file></span></td> |
---|
| 591 | <td colspan="1" rowspan="1">æ亀äœäž</td> |
---|
| 592 | |
---|
| 593 | </tr> |
---|
| 594 | |
---|
| 595 | <tr> |
---|
| 596 | |
---|
| 597 | <td colspan="1" rowspan="1"><span class="codefrag">-status <job-id></span></td> |
---|
| 598 | <td colspan="1" rowspan="1">æå°mapåreduceå®æçŸåæ¯åææ计æ°åšã</td> |
---|
| 599 | |
---|
| 600 | </tr> |
---|
| 601 | |
---|
| 602 | <tr> |
---|
| 603 | |
---|
| 604 | <td colspan="1" rowspan="1"><span class="codefrag">-counter <job-id> <group-name> <counter-name></span></td> |
---|
| 605 | <td colspan="1" rowspan="1">æå°è®¡æ°åšçåŒã</td> |
---|
| 606 | |
---|
| 607 | </tr> |
---|
| 608 | |
---|
| 609 | <tr> |
---|
| 610 | |
---|
| 611 | <td colspan="1" rowspan="1"><span class="codefrag">-kill <job-id></span></td> |
---|
| 612 | <td colspan="1" rowspan="1">ææ»æå®äœäžã</td> |
---|
| 613 | |
---|
| 614 | </tr> |
---|
| 615 | |
---|
| 616 | <tr> |
---|
| 617 | |
---|
| 618 | <td colspan="1" rowspan="1"><span class="codefrag">-events <job-id> <from-event-#> <#-of-events></span></td> |
---|
| 619 | <td colspan="1" rowspan="1">æå°ç»å®èåŽå
jobtrackeræ¥æ¶å°çäºä»¶ç»èã</td> |
---|
| 620 | |
---|
| 621 | </tr> |
---|
| 622 | |
---|
| 623 | <tr> |
---|
| 624 | |
---|
| 625 | <td colspan="1" rowspan="1"><span class="codefrag">-history [all] <jobOutputDir></span></td> |
---|
| 626 | <td colspan="1" rowspan="1">-history <jobOutputDir> æå°äœäžçç»èã倱莥å被ææ»åå çç»èãæŽå€çå
³äºäžäžªäœäžçç»èæ¯åŠæåçä»»å¡ïŒåè¿çä»»å¡å°è¯çä¿¡æ¯å¯ä»¥éè¿æå®[all]é项æ¥çã |
---|
| 627 | </td> |
---|
| 628 | |
---|
| 629 | </tr> |
---|
| 630 | |
---|
| 631 | <tr> |
---|
| 632 | |
---|
| 633 | <td colspan="1" rowspan="1"><span class="codefrag">-list [all]</span></td> |
---|
| 634 | <td colspan="1" rowspan="1">-list allæŸç€ºææäœäžã-liståªæŸç€ºå°èŠå®æçäœäžã</td> |
---|
| 635 | |
---|
| 636 | </tr> |
---|
| 637 | |
---|
| 638 | <tr> |
---|
| 639 | |
---|
| 640 | <td colspan="1" rowspan="1"><span class="codefrag">-kill-task <task-id></span></td> |
---|
| 641 | <td colspan="1" rowspan="1">ææ»ä»»å¡ã被ææ»çä»»å¡äžäŒäžå©äºå€±èŽ¥å°è¯ã</td> |
---|
| 642 | |
---|
| 643 | </tr> |
---|
| 644 | |
---|
| 645 | <tr> |
---|
| 646 | |
---|
| 647 | <td colspan="1" rowspan="1"><span class="codefrag">-fail-task <task-id></span></td> |
---|
| 648 | <td colspan="1" rowspan="1">䜿任å¡å€±èŽ¥ã被倱莥çä»»å¡äŒå¯¹å€±èŽ¥å°è¯äžå©ã</td> |
---|
| 649 | |
---|
| 650 | </tr> |
---|
| 651 | |
---|
| 652 | </table> |
---|
| 653 | <a name="N10302"></a><a name="pipes"></a> |
---|
| 654 | <h3 class="h4"> pipes </h3> |
---|
| 655 | <p> |
---|
| 656 | è¿è¡pipesäœäžã |
---|
| 657 | </p> |
---|
| 658 | <p> |
---|
| 659 | |
---|
| 660 | <span class="codefrag">çšæ³ïŒhadoop pipes [-conf <path>] [-jobconf <key=value>, <key=value>, ...] |
---|
| 661 | [-input <path>] [-output <path>] [-jar <jar file>] [-inputformat <class>] |
---|
| 662 | [-map <class>] [-partitioner <class>] [-reduce <class>] [-writer <class>] |
---|
| 663 | [-program <executable>] [-reduces <num>] </span> |
---|
| 664 | |
---|
| 665 | </p> |
---|
| 666 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 667 | |
---|
| 668 | <tr> |
---|
| 669 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 670 | </tr> |
---|
| 671 | |
---|
| 672 | |
---|
| 673 | <tr> |
---|
| 674 | |
---|
| 675 | <td colspan="1" rowspan="1"><span class="codefrag">-conf <path></span></td> |
---|
| 676 | <td colspan="1" rowspan="1">äœäžçé
眮</td> |
---|
| 677 | |
---|
| 678 | </tr> |
---|
| 679 | |
---|
| 680 | <tr> |
---|
| 681 | |
---|
| 682 | <td colspan="1" rowspan="1"><span class="codefrag">-jobconf <key=value>, <key=value>, ...</span></td> |
---|
| 683 | <td colspan="1" rowspan="1">å¢å /èŠçäœäžçé
眮项</td> |
---|
| 684 | |
---|
| 685 | </tr> |
---|
| 686 | |
---|
| 687 | <tr> |
---|
| 688 | |
---|
| 689 | <td colspan="1" rowspan="1"><span class="codefrag">-input <path></span></td> |
---|
| 690 | <td colspan="1" rowspan="1">èŸå
¥ç®åœ</td> |
---|
| 691 | |
---|
| 692 | </tr> |
---|
| 693 | |
---|
| 694 | <tr> |
---|
| 695 | |
---|
| 696 | <td colspan="1" rowspan="1"><span class="codefrag">-output <path></span></td> |
---|
| 697 | <td colspan="1" rowspan="1">èŸåºç®åœ</td> |
---|
| 698 | |
---|
| 699 | </tr> |
---|
| 700 | |
---|
| 701 | <tr> |
---|
| 702 | |
---|
| 703 | <td colspan="1" rowspan="1"><span class="codefrag">-jar <jar file></span></td> |
---|
| 704 | <td colspan="1" rowspan="1">Jaræ件å</td> |
---|
| 705 | |
---|
| 706 | </tr> |
---|
| 707 | |
---|
| 708 | <tr> |
---|
| 709 | |
---|
| 710 | <td colspan="1" rowspan="1"><span class="codefrag">-inputformat <class></span></td> |
---|
| 711 | <td colspan="1" rowspan="1">InputFormatç±»</td> |
---|
| 712 | |
---|
| 713 | </tr> |
---|
| 714 | |
---|
| 715 | <tr> |
---|
| 716 | |
---|
| 717 | <td colspan="1" rowspan="1"><span class="codefrag">-map <class></span></td> |
---|
| 718 | <td colspan="1" rowspan="1">Java Mapç±»</td> |
---|
| 719 | |
---|
| 720 | </tr> |
---|
| 721 | |
---|
| 722 | <tr> |
---|
| 723 | |
---|
| 724 | <td colspan="1" rowspan="1"><span class="codefrag">-partitioner <class></span></td> |
---|
| 725 | <td colspan="1" rowspan="1">Java Partitioner</td> |
---|
| 726 | |
---|
| 727 | </tr> |
---|
| 728 | |
---|
| 729 | <tr> |
---|
| 730 | |
---|
| 731 | <td colspan="1" rowspan="1"><span class="codefrag">-reduce <class></span></td> |
---|
| 732 | <td colspan="1" rowspan="1">Java Reduceç±»</td> |
---|
| 733 | |
---|
| 734 | </tr> |
---|
| 735 | |
---|
| 736 | <tr> |
---|
| 737 | |
---|
| 738 | <td colspan="1" rowspan="1"><span class="codefrag">-writer <class></span></td> |
---|
| 739 | <td colspan="1" rowspan="1">Java RecordWriter</td> |
---|
| 740 | |
---|
| 741 | </tr> |
---|
| 742 | |
---|
| 743 | <tr> |
---|
| 744 | |
---|
| 745 | <td colspan="1" rowspan="1"><span class="codefrag">-program <executable></span></td> |
---|
| 746 | <td colspan="1" rowspan="1">å¯æ§è¡çšåºçURI</td> |
---|
| 747 | |
---|
| 748 | </tr> |
---|
| 749 | |
---|
| 750 | <tr> |
---|
| 751 | |
---|
| 752 | <td colspan="1" rowspan="1"><span class="codefrag">-reduces <num></span></td> |
---|
| 753 | <td colspan="1" rowspan="1">reduce䞪æ°</td> |
---|
| 754 | |
---|
| 755 | </tr> |
---|
| 756 | |
---|
| 757 | </table> |
---|
| 758 | <a name="N103C7"></a><a name="version"></a> |
---|
| 759 | <h3 class="h4"> version </h3> |
---|
| 760 | <p> |
---|
| 761 | æå°çæ¬ä¿¡æ¯ã |
---|
| 762 | </p> |
---|
| 763 | <p> |
---|
| 764 | |
---|
| 765 | <span class="codefrag">çšæ³ïŒhadoop version</span> |
---|
| 766 | |
---|
| 767 | </p> |
---|
| 768 | <a name="N103D7"></a><a name="CLASSNAME"></a> |
---|
| 769 | <h3 class="h4"> CLASSNAME </h3> |
---|
| 770 | <p> |
---|
| 771 | hadoopèæ¬å¯çšäºè°è°çšä»»äœç±»ã |
---|
| 772 | </p> |
---|
| 773 | <p> |
---|
| 774 | |
---|
| 775 | <span class="codefrag">çšæ³ïŒhadoop CLASSNAME</span> |
---|
| 776 | |
---|
| 777 | </p> |
---|
| 778 | <p> |
---|
| 779 | è¿è¡åå䞺CLASSNAMEçç±»ã |
---|
| 780 | </p> |
---|
| 781 | </div> |
---|
| 782 | |
---|
| 783 | |
---|
| 784 | <a name="N103EB"></a><a name="%E7%AE%A1%E7%90%86%E5%91%BD%E4%BB%A4"></a> |
---|
| 785 | <h2 class="h3">管çåœä»€</h2> |
---|
| 786 | <div class="section"> |
---|
| 787 | <p>hadoopé矀管çååžžçšçåœä»€ã</p> |
---|
| 788 | <a name="N103F4"></a><a name="balancer"></a> |
---|
| 789 | <h3 class="h4"> balancer </h3> |
---|
| 790 | <p> |
---|
| 791 | è¿è¡é矀平衡工å
·ã管çåå¯ä»¥ç®åçæCtrl-Cæ¥åæ¢å¹³è¡¡è¿çšãåè<a href="hdfs_user_guide.html#Rebalancer">Rebalancer</a>äºè§£æŽå€ã |
---|
| 792 | </p> |
---|
| 793 | <p> |
---|
| 794 | |
---|
| 795 | <span class="codefrag">çšæ³ïŒhadoop balancer [-threshold <threshold>]</span> |
---|
| 796 | |
---|
| 797 | </p> |
---|
| 798 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 799 | |
---|
| 800 | <tr> |
---|
| 801 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 802 | </tr> |
---|
| 803 | |
---|
| 804 | |
---|
| 805 | <tr> |
---|
| 806 | |
---|
| 807 | <td colspan="1" rowspan="1"><span class="codefrag">-threshold <threshold></span></td> |
---|
| 808 | <td colspan="1" rowspan="1">ç£ç容éççŸåæ¯ãè¿äŒèŠç猺ççéåŒã</td> |
---|
| 809 | |
---|
| 810 | </tr> |
---|
| 811 | |
---|
| 812 | </table> |
---|
| 813 | <a name="N10423"></a><a name="daemonlog"></a> |
---|
| 814 | <h3 class="h4"> daemonlog </h3> |
---|
| 815 | <p> |
---|
| 816 | è·åæ讟眮æ¯äžªå®æ€è¿çšçæ¥å¿çº§å«ã |
---|
| 817 | </p> |
---|
| 818 | <p> |
---|
| 819 | |
---|
| 820 | <span class="codefrag">çšæ³ïŒhadoop daemonlog -getlevel <host:port> <name></span> |
---|
| 821 | <br> |
---|
| 822 | |
---|
| 823 | <span class="codefrag">çšæ³ïŒhadoop daemonlog -setlevel <host:port> <name> <level></span> |
---|
| 824 | |
---|
| 825 | </p> |
---|
| 826 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 827 | |
---|
| 828 | <tr> |
---|
| 829 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 830 | </tr> |
---|
| 831 | |
---|
| 832 | |
---|
| 833 | <tr> |
---|
| 834 | |
---|
| 835 | <td colspan="1" rowspan="1"><span class="codefrag">-getlevel <host:port> <name></span></td> |
---|
| 836 | <td colspan="1" rowspan="1">æå°è¿è¡åš<host:port>çå®æ€è¿çšçæ¥å¿çº§å«ãè¿äžªåœä»€å
éšäŒè¿æ¥http://<host:port>/logLevel?log=<name></td> |
---|
| 837 | |
---|
| 838 | </tr> |
---|
| 839 | |
---|
| 840 | <tr> |
---|
| 841 | |
---|
| 842 | <td colspan="1" rowspan="1"><span class="codefrag">-setlevel <host:port> <name> <level></span></td> |
---|
| 843 | <td colspan="1" rowspan="1">讟眮è¿è¡åš<host:port>çå®æ€è¿çšçæ¥å¿çº§å«ãè¿äžªåœä»€å
éšäŒè¿æ¥http://<host:port>/logLevel?log=<name></td> |
---|
| 844 | |
---|
| 845 | </tr> |
---|
| 846 | |
---|
| 847 | </table> |
---|
| 848 | <a name="N10460"></a><a name="datanode"></a> |
---|
| 849 | <h3 class="h4"> datanode</h3> |
---|
| 850 | <p> |
---|
| 851 | è¿è¡äžäžªHDFSçdatanodeã |
---|
| 852 | </p> |
---|
| 853 | <p> |
---|
| 854 | |
---|
| 855 | <span class="codefrag">çšæ³ïŒhadoop datanode [-rollback]</span> |
---|
| 856 | |
---|
| 857 | </p> |
---|
| 858 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 859 | |
---|
| 860 | <tr> |
---|
| 861 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 862 | </tr> |
---|
| 863 | |
---|
| 864 | |
---|
| 865 | <tr> |
---|
| 866 | |
---|
| 867 | <td colspan="1" rowspan="1"><span class="codefrag">-rollback</span></td> |
---|
| 868 | <td colspan="1" rowspan="1">å°datanodeåæ»å°åäžäžªçæ¬ãè¿éèŠåšåæ¢datanodeïŒååèçhadoopçæ¬ä¹å䜿çšã |
---|
| 869 | </td> |
---|
| 870 | |
---|
| 871 | </tr> |
---|
| 872 | |
---|
| 873 | </table> |
---|
| 874 | <a name="N1048B"></a><a name="dfsadmin"></a> |
---|
| 875 | <h3 class="h4"> dfsadmin </h3> |
---|
| 876 | <p> |
---|
| 877 | è¿è¡äžäžªHDFSçdfsadmin客æ·ç«¯ã |
---|
| 878 | </p> |
---|
| 879 | <p> |
---|
| 880 | |
---|
| 881 | <span class="codefrag">çšæ³ïŒhadoop dfsadmin [</span><a href="commands_manual.html#%E5%B8%B8%E8%A7%84%E9%80%89%E9%A1%B9">GENERIC_OPTIONS</a><span class="codefrag">] [-report] [-safemode enter | leave | get | wait] [-refreshNodes] |
---|
| 882 | [-finalizeUpgrade] [-upgradeProgress status | details | force] [-metasave filename] |
---|
| 883 | [-setQuota <quota> <dirname>...<dirname>] [-clrQuota <dirname>...<dirname>] |
---|
| 884 | [-help [cmd]]</span> |
---|
| 885 | |
---|
| 886 | </p> |
---|
| 887 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 888 | |
---|
| 889 | <tr> |
---|
| 890 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 891 | </tr> |
---|
| 892 | |
---|
| 893 | |
---|
| 894 | <tr> |
---|
| 895 | |
---|
| 896 | <td colspan="1" rowspan="1"><span class="codefrag">-report</span></td> |
---|
| 897 | <td colspan="1" rowspan="1">æ¥åæ件系ç»çåºæ¬ä¿¡æ¯åç»è®¡ä¿¡æ¯ã</td> |
---|
| 898 | |
---|
| 899 | </tr> |
---|
| 900 | |
---|
| 901 | <tr> |
---|
| 902 | |
---|
| 903 | <td colspan="1" rowspan="1"><span class="codefrag">-safemode enter | leave | get | wait</span></td> |
---|
| 904 | <td colspan="1" rowspan="1">å®å
šæš¡åŒç»Žæ€åœä»€ãå®å
šæš¡åŒæ¯Namenodeçäžäžªç¶æïŒè¿ç§ç¶æäžïŒNamenode <br> |
---|
| 905 | 1. äžæ¥å对åå空éŽçæŽæ¹(åªè¯»)<br> |
---|
| 906 | 2. äžå€å¶æå é€å<br> |
---|
| 907 | NamenodeäŒåšå¯åšæ¶èªåšè¿å
¥å®å
šæš¡åŒïŒåœé
眮çåæå°çŸåæ¯æ°æ»¡è¶³æå°çå¯æ¬æ°æ¡ä»¶æ¶ïŒäŒèªåšçŠ»åŒå®å
šæš¡åŒãå®å
šæš¡åŒå¯ä»¥æåšè¿å
¥ïŒäœæ¯è¿æ ·çè¯ä¹å¿
é¡»æåšå
³éå®å
šæš¡åŒã |
---|
| 908 | </td> |
---|
| 909 | |
---|
| 910 | </tr> |
---|
| 911 | |
---|
| 912 | <tr> |
---|
| 913 | |
---|
| 914 | <td colspan="1" rowspan="1"><span class="codefrag">-refreshNodes</span></td> |
---|
| 915 | <td colspan="1" rowspan="1">éæ°è¯»åhostsåexcludeæ件ïŒæŽæ°å
讞è¿å°Namenodeçæé£äºéèŠéåºæå
¥çŒçDatanodeçéåã |
---|
| 916 | </td> |
---|
| 917 | |
---|
| 918 | </tr> |
---|
| 919 | |
---|
| 920 | <tr> |
---|
| 921 | |
---|
| 922 | <td colspan="1" rowspan="1"><span class="codefrag">-finalizeUpgrade</span></td> |
---|
| 923 | <td colspan="1" rowspan="1">ç»ç»HDFSçå级æäœãDatanodeå é€åäžäžªçæ¬çå·¥äœç®åœïŒä¹åNamenodeä¹è¿æ ·åãè¿äžªæäœå®ç»æŽäžªå级è¿çšã |
---|
| 924 | </td> |
---|
| 925 | |
---|
| 926 | </tr> |
---|
| 927 | |
---|
| 928 | <tr> |
---|
| 929 | |
---|
| 930 | <td colspan="1" rowspan="1"><span class="codefrag">-upgradeProgress status | details | force</span></td> |
---|
| 931 | <td colspan="1" rowspan="1">请æ±åœåç³»ç»çå级ç¶æïŒç¶æçç»èïŒæè
区å¶å级æäœè¿è¡ã |
---|
| 932 | </td> |
---|
| 933 | |
---|
| 934 | </tr> |
---|
| 935 | |
---|
| 936 | <tr> |
---|
| 937 | |
---|
| 938 | <td colspan="1" rowspan="1"><span class="codefrag">-metasave filename</span></td> |
---|
| 939 | <td colspan="1" rowspan="1">ä¿åNamenodeçäž»èŠæ°æ®ç»æå°hadoop.log.dirå±æ§æå®çç®åœäžç<filename>æ件ã对äºäžé¢çæ¯äžé¡¹ïŒ<filename>äžéœäŒäžè¡å
容äžä¹å¯¹åº<br> |
---|
| 940 | 1. Namenodeæ¶å°çDatanodeçå¿è·³ä¿¡å·<br> |
---|
| 941 | 2. çåŸ
被å€å¶çå<br> |
---|
| 942 | 3. æ£åšè¢«å€å¶çå<br> |
---|
| 943 | 4. çåŸ
被å é€çå</td> |
---|
| 944 | |
---|
| 945 | </tr> |
---|
| 946 | |
---|
| 947 | <tr> |
---|
| 948 | |
---|
| 949 | <td colspan="1" rowspan="1"><span class="codefrag">-setQuota <quota> <dirname>...<dirname></span></td> |
---|
| 950 | <td colspan="1" rowspan="1">䞺æ¯äžªç®åœ <dirname>讟å®é
é¢<quota>ãç®åœé
é¢æ¯äžäžªé¿æŽåæŽæ°ïŒåŒºå¶éå®äºç®åœæ äžçåå䞪æ°ã<br> |
---|
| 951 | åœä»€äŒåšè¿äžªç®åœäžå·¥äœè¯å¥œïŒä»¥äžæ
åµäŒæ¥éïŒ<br> |
---|
| 952 | 1. Näžæ¯äžäžªæ£æŽæ°ïŒæè
<br> |
---|
| 953 | 2. çšæ·äžæ¯ç®¡çåïŒæè
<br> |
---|
| 954 | 3. è¿äžªç®åœäžååšææ¯æ件ïŒæè
<br> |
---|
| 955 | 4. ç®åœäŒé©¬äžè¶
åºæ°è®Ÿå®çé
é¢ã</td> |
---|
| 956 | |
---|
| 957 | </tr> |
---|
| 958 | |
---|
| 959 | <tr> |
---|
| 960 | |
---|
| 961 | <td colspan="1" rowspan="1"><span class="codefrag">-clrQuota <dirname>...<dirname></span></td> |
---|
| 962 | <td colspan="1" rowspan="1">䞺æ¯äžäžªç®åœ<dirname>æž
é€é
é¢è®Ÿå®ã<br> |
---|
| 963 | åœä»€äŒåšè¿äžªç®åœäžå·¥äœè¯å¥œïŒä»¥äžæ
åµäŒæ¥éïŒ<br> |
---|
| 964 | 1. è¿äžªç®åœäžååšææ¯æ件ïŒæè
<br> |
---|
| 965 | 2. çšæ·äžæ¯ç®¡çåã<br> |
---|
| 966 | åŠæç®åœåæ¥æ²¡æé
é¢äžäŒæ¥éã</td> |
---|
| 967 | |
---|
| 968 | </tr> |
---|
| 969 | |
---|
| 970 | <tr> |
---|
| 971 | |
---|
| 972 | <td colspan="1" rowspan="1"><span class="codefrag">-help [cmd]</span></td> |
---|
| 973 | <td colspan="1" rowspan="1">æŸç€ºç»å®åœä»€çåž®å©ä¿¡æ¯ïŒåŠæ没æç»å®åœä»€ïŒåæŸç€ºææåœä»€çåž®å©ä¿¡æ¯ã</td> |
---|
| 974 | |
---|
| 975 | </tr> |
---|
| 976 | |
---|
| 977 | </table> |
---|
| 978 | <a name="N1054B"></a><a name="jobtracker"></a> |
---|
| 979 | <h3 class="h4"> jobtracker </h3> |
---|
| 980 | <p> |
---|
| 981 | è¿è¡MapReduce job Trackerèç¹ã |
---|
| 982 | </p> |
---|
| 983 | <p> |
---|
| 984 | |
---|
| 985 | <span class="codefrag">çšæ³ïŒhadoop jobtracker</span> |
---|
| 986 | |
---|
| 987 | </p> |
---|
| 988 | <a name="N1055B"></a><a name="namenode"></a> |
---|
| 989 | <h3 class="h4"> namenode </h3> |
---|
| 990 | <p> |
---|
| 991 | è¿è¡namenodeãæå
³å级ïŒåæ»ïŒå级ç»ç»çæŽå€ä¿¡æ¯è¯·åè<a href="hdfs_user_guide.html#%E5%8D%87%E7%BA%A7%E5%92%8C%E5%9B%9E%E6%BB%9A">å级ååæ»</a>ã |
---|
| 992 | </p> |
---|
| 993 | <p> |
---|
| 994 | |
---|
| 995 | <span class="codefrag">çšæ³ïŒhadoop namenode [-format] | [-upgrade] | [-rollback] | [-finalize] | [-importCheckpoint]</span> |
---|
| 996 | |
---|
| 997 | </p> |
---|
| 998 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 999 | |
---|
| 1000 | <tr> |
---|
| 1001 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 1002 | </tr> |
---|
| 1003 | |
---|
| 1004 | |
---|
| 1005 | <tr> |
---|
| 1006 | |
---|
| 1007 | <td colspan="1" rowspan="1"><span class="codefrag">-format</span></td> |
---|
| 1008 | <td colspan="1" rowspan="1">æ ŒåŒånamenodeãå®å¯åšnamenodeïŒæ ŒåŒånamenodeïŒä¹åå
³énamenodeã</td> |
---|
| 1009 | |
---|
| 1010 | </tr> |
---|
| 1011 | |
---|
| 1012 | <tr> |
---|
| 1013 | |
---|
| 1014 | <td colspan="1" rowspan="1"><span class="codefrag">-upgrade</span></td> |
---|
| 1015 | <td colspan="1" rowspan="1">ååæ°çæ¬çhadoopåïŒnamenodeåºä»¥upgradeé项å¯åšã</td> |
---|
| 1016 | |
---|
| 1017 | </tr> |
---|
| 1018 | |
---|
| 1019 | <tr> |
---|
| 1020 | |
---|
| 1021 | <td colspan="1" rowspan="1"><span class="codefrag">-rollback</span></td> |
---|
| 1022 | <td colspan="1" rowspan="1">å°namenodeåæ»å°åäžçæ¬ãè¿äžªé项èŠåšåæ¢é矀ïŒååèçhadoopçæ¬å䜿çšã |
---|
| 1023 | </td> |
---|
| 1024 | |
---|
| 1025 | </tr> |
---|
| 1026 | |
---|
| 1027 | <tr> |
---|
| 1028 | |
---|
| 1029 | <td colspan="1" rowspan="1"><span class="codefrag">-finalize</span></td> |
---|
| 1030 | <td colspan="1" rowspan="1">finalizeäŒå é€æ件系ç»çåäžç¶æãæè¿çå级äŒè¢«æä¹
åïŒrollbacké项å°åäžå¯çšïŒå级ç»ç»æäœä¹åïŒå®äŒåænamenodeã</td> |
---|
| 1031 | |
---|
| 1032 | </tr> |
---|
| 1033 | |
---|
| 1034 | <tr> |
---|
| 1035 | |
---|
| 1036 | <td colspan="1" rowspan="1"><span class="codefrag">-importCheckpoint</span></td> |
---|
| 1037 | <td colspan="1" rowspan="1">ä»æ£æ¥ç¹ç®åœè£
蜜éå并ä¿åå°åœåæ£æ¥ç¹ç®åœïŒæ£æ¥ç¹ç®åœç±fs.checkpoint.diræå®ã |
---|
| 1038 | </td> |
---|
| 1039 | |
---|
| 1040 | </tr> |
---|
| 1041 | |
---|
| 1042 | </table> |
---|
| 1043 | <a name="N105C2"></a><a name="secondarynamenode"></a> |
---|
| 1044 | <h3 class="h4"> secondarynamenode </h3> |
---|
| 1045 | <p> |
---|
| 1046 | è¿è¡HDFSçsecondary namenodeãåè<a href="hdfs_user_guide.html#Secondary+NameNode">Secondary Namenode</a>äºè§£æŽå€ã |
---|
| 1047 | </p> |
---|
| 1048 | <p> |
---|
| 1049 | |
---|
| 1050 | <span class="codefrag">çšæ³ïŒhadoop secondarynamenode [-checkpoint [force]] | [-geteditsize]</span> |
---|
| 1051 | |
---|
| 1052 | </p> |
---|
| 1053 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
| 1054 | |
---|
| 1055 | <tr> |
---|
| 1056 | <th colspan="1" rowspan="1"> åœä»€é项 </th><th colspan="1" rowspan="1"> æè¿°</th> |
---|
| 1057 | </tr> |
---|
| 1058 | |
---|
| 1059 | |
---|
| 1060 | <tr> |
---|
| 1061 | |
---|
| 1062 | <td colspan="1" rowspan="1"><span class="codefrag">-checkpoint [force]</span></td> |
---|
| 1063 | <td colspan="1" rowspan="1">åŠæEditLogçå€§å° >= fs.checkpoint.sizeïŒå¯åšSecondary namenodeçæ£æ¥ç¹è¿çšã |
---|
| 1064 | åŠæ䜿çšäº-forceïŒå°äžèèEditLogç倧å°ã</td> |
---|
| 1065 | |
---|
| 1066 | </tr> |
---|
| 1067 | |
---|
| 1068 | <tr> |
---|
| 1069 | |
---|
| 1070 | <td colspan="1" rowspan="1"><span class="codefrag">-geteditsize</span></td> |
---|
| 1071 | <td colspan="1" rowspan="1">æå°EditLog倧å°ã</td> |
---|
| 1072 | |
---|
| 1073 | </tr> |
---|
| 1074 | |
---|
| 1075 | </table> |
---|
| 1076 | <a name="N105FF"></a><a name="tasktracker"></a> |
---|
| 1077 | <h3 class="h4"> tasktracker </h3> |
---|
| 1078 | <p> |
---|
| 1079 | è¿è¡MapReduceçtask Trackerèç¹ã |
---|
| 1080 | </p> |
---|
| 1081 | <p> |
---|
| 1082 | |
---|
| 1083 | <span class="codefrag">çšæ³ïŒhadoop tasktracker</span> |
---|
| 1084 | |
---|
| 1085 | </p> |
---|
| 1086 | </div> |
---|
| 1087 | |
---|
| 1088 | |
---|
| 1089 | |
---|
| 1090 | |
---|
| 1091 | |
---|
| 1092 | </div> |
---|
| 1093 | <!--+ |
---|
| 1094 | |end content |
---|
| 1095 | +--> |
---|
| 1096 | <div class="clearboth"> </div> |
---|
| 1097 | </div> |
---|
| 1098 | <div id="footer"> |
---|
| 1099 | <!--+ |
---|
| 1100 | |start bottomstrip |
---|
| 1101 | +--> |
---|
| 1102 | <div class="lastmodified"> |
---|
| 1103 | <script type="text/javascript"><!-- |
---|
| 1104 | document.write("Last Published: " + document.lastModified); |
---|
| 1105 | // --></script> |
---|
| 1106 | </div> |
---|
| 1107 | <div class="copyright"> |
---|
| 1108 | Copyright © |
---|
| 1109 | 2007 <a href="http://www.apache.org/licenses/">The Apache Software Foundation.</a> |
---|
| 1110 | </div> |
---|
| 1111 | <!--+ |
---|
| 1112 | |end bottomstrip |
---|
| 1113 | +--> |
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| 1114 | </div> |
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| 1115 | </body> |
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| 1116 | </html> |
---|