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210 | </li> |
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211 | <li> |
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212 | <a href="#%E9%9B%86%E7%BE%A4%E9%85%8D%E7%BD%AE">é矀é
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231 | <a href="#Hadoop%E7%9A%84%E6%9C%BA%E6%9E%B6%E6%84%9F%E7%9F%A5">Hadoopçæºæ¶æç¥</a> |
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232 | </li> |
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234 | <a href="#%E5%90%AF%E5%8A%A8Hadoop">å¯åšHadoop</a> |
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237 | <a href="#%E5%81%9C%E6%AD%A2Hadoop">åæ¢Hadoop</a> |
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241 | |
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242 | |
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243 | <a name="N1000D"></a><a name="%E7%9B%AE%E7%9A%84"></a> |
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244 | <h2 class="h3">ç®ç</h2> |
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245 | <div class="section"> |
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254 | <ol> |
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259 | |
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263 | </li> |
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264 | |
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265 | </ol> |
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266 | </div> |
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267 | |
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268 | |
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271 | <div class="section"> |
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273 | <p>éåžžïŒé矀éçäžå°æºåšè¢«æå®äžº |
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274 | <span class="codefrag">NameNode</span>ïŒåŠäžå°äžåçæºåšè¢«æå®äžº<span class="codefrag">JobTracker</span>ãè¿äºæºåšæ¯<em>masters</em>ãäœäžçæºåšå³äœäžº<span class="codefrag">DataNode</span><em>ä¹</em>äœäžº<span class="codefrag">TaskTracker</span>ãè¿äºæºåšæ¯<em>slaves</em>ã</p> |
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277 | |
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278 | |
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279 | <a name="N10060"></a><a name="%E9%85%8D%E7%BD%AE"></a> |
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280 | <h2 class="h3">é
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281 | <div class="section"> |
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282 | <p>æ¥äžæ¥çå èæè¿°äºåŠäœé
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283 | <a name="N10069"></a><a name="%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6"></a> |
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284 | <h3 class="h4">é
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285 | <p>对Hadoopçé
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286 | <ol> |
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287 | |
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288 | <li> |
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289 | |
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290 | <a href="http://hadoop.apache.org/core/docs/current/hadoop-default.html">hadoop-default.xml</a> - åªè¯»çé»è®€é
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291 | </li> |
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292 | |
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293 | <li> |
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294 | |
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295 | <em>hadoop-site.xml</em> - é矀ç¹æçé
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296 | </li> |
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297 | |
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298 | </ol> |
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299 | <p>èŠäºè§£æŽå€å
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300 | <p>æ€å€ïŒéè¿è®Ÿçœ®<span class="codefrag">conf/hadoop-env.sh</span>äžçåé䞺é矀ç¹æçåŒïŒäœ å¯ä»¥å¯¹<span class="codefrag">bin/</span>ç®åœäžçHadoopèæ¬è¿è¡æ§å¶ã</p> |
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301 | <a name="N10096"></a><a name="%E9%9B%86%E7%BE%A4%E9%85%8D%E7%BD%AE"></a> |
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302 | <h3 class="h4">é矀é
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303 | <p>èŠé
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304 | <p>Hadoopå®æ€è¿çšæ<span class="codefrag">NameNode</span>/<span class="codefrag">DataNode</span> |
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305 | å<span class="codefrag">JobTracker</span>/<span class="codefrag">TaskTracker</span>ã</p> |
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306 | <a name="N100B4"></a><a name="%E9%85%8D%E7%BD%AEHadoop%E5%AE%88%E6%8A%A4%E8%BF%9B%E7%A8%8B%E7%9A%84%E8%BF%90%E8%A1%8C%E7%8E%AF%E5%A2%83"></a> |
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307 | <h4>é
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310 | <p>管çåå¯ä»¥éè¿é
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311 | äžè¡šæ¯å¯ä»¥é
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312 | </p> |
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313 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
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314 | |
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315 | <tr> |
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316 | <th colspan="1" rowspan="1">å®æ€è¿çš</th><th colspan="1" rowspan="1">é
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317 | </tr> |
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318 | |
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319 | <tr> |
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320 | <td colspan="1" rowspan="1">NameNode</td><td colspan="1" rowspan="1">HADOOP_NAMENODE_OPTS</td> |
---|
321 | </tr> |
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322 | |
---|
323 | <tr> |
---|
324 | <td colspan="1" rowspan="1">DataNode</td><td colspan="1" rowspan="1">HADOOP_DATANODE_OPTS</td> |
---|
325 | </tr> |
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326 | |
---|
327 | <tr> |
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328 | <td colspan="1" rowspan="1">SecondaryNamenode</td> |
---|
329 | <td colspan="1" rowspan="1">HADOOP_SECONDARYNAMENODE_OPTS</td> |
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330 | </tr> |
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331 | |
---|
332 | <tr> |
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333 | <td colspan="1" rowspan="1">JobTracker</td><td colspan="1" rowspan="1">HADOOP_JOBTRACKER_OPTS</td> |
---|
334 | </tr> |
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335 | |
---|
336 | <tr> |
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337 | <td colspan="1" rowspan="1">TaskTracker</td><td colspan="1" rowspan="1">HADOOP_TASKTRACKER_OPTS</td> |
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338 | </tr> |
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339 | |
---|
340 | </table> |
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341 | <p>äŸåŠïŒé
眮Namenodeæ¶,䞺äºäœ¿å
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342 | èŠæäžé¢ç代ç å å
¥å°<span class="codefrag">hadoop-env.sh</span> : |
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343 | <br> |
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344 | <span class="codefrag"> |
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345 | export HADOOP_NAMENODE_OPTS="-XX:+UseParallelGC ${HADOOP_NAMENODE_OPTS}" |
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346 | </span> |
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347 | <br> |
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348 | </p> |
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349 | <p>å
¶å®å¯å®å¶çåžžçšåæ°è¿å
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350 | <ul> |
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351 | |
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352 | <li> |
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353 | |
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354 | <span class="codefrag">HADOOP_LOG_DIR</span> - å®æ€è¿çšæ¥å¿æ件çåæŸç®åœãåŠæäžååšäŒè¢«èªåšå建ã |
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355 | </li> |
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356 | |
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357 | <li> |
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358 | |
---|
359 | <span class="codefrag">HADOOP_HEAPSIZE</span> - æ倧å¯çšçå 倧å°ïŒåäœäžºMBãæ¯åŠïŒ<span class="codefrag">1000MB</span>ã |
---|
360 | è¿äžªåæ°çšäºè®Ÿçœ®hadoopå®æ€è¿çšçå 倧å°ã猺ç倧å°æ¯<span class="codefrag">1000MB</span>ã |
---|
361 | </li> |
---|
362 | |
---|
363 | </ul> |
---|
364 | <a name="N1012F"></a><a name="%E9%85%8D%E7%BD%AEHadoop%E5%AE%88%E6%8A%A4%E8%BF%9B%E7%A8%8B%E7%9A%84%E8%BF%90%E8%A1%8C%E5%8F%82%E6%95%B0"></a> |
---|
365 | <h4>é
眮Hadoopå®æ€è¿çšçè¿è¡åæ°</h4> |
---|
366 | <p>è¿éšåæ¶åHadoopé矀çéèŠåæ°ïŒè¿äºåæ°åš<span class="codefrag">conf/hadoop-site.xml</span>äžæå®ã</p> |
---|
367 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
368 | |
---|
369 | <tr> |
---|
370 | |
---|
371 | <th colspan="1" rowspan="1">åæ°</th> |
---|
372 | <th colspan="1" rowspan="1">ååŒ</th> |
---|
373 | <th colspan="1" rowspan="1">å€æ³š</th> |
---|
374 | |
---|
375 | </tr> |
---|
376 | |
---|
377 | <tr> |
---|
378 | |
---|
379 | <td colspan="1" rowspan="1">fs.default.name</td> |
---|
380 | <td colspan="1" rowspan="1"><span class="codefrag">NameNode</span>çURIã</td> |
---|
381 | <td colspan="1" rowspan="1"><em>hdfs://äž»æºå/</em></td> |
---|
382 | |
---|
383 | </tr> |
---|
384 | |
---|
385 | <tr> |
---|
386 | |
---|
387 | <td colspan="1" rowspan="1">mapred.job.tracker</td> |
---|
388 | <td colspan="1" rowspan="1"><span class="codefrag">JobTracker</span>çäž»æºïŒæè
IPïŒå端å£ã</td> |
---|
389 | <td colspan="1" rowspan="1"><em>äž»æº:端å£</em>ã</td> |
---|
390 | |
---|
391 | </tr> |
---|
392 | |
---|
393 | <tr> |
---|
394 | |
---|
395 | <td colspan="1" rowspan="1">dfs.name.dir</td> |
---|
396 | <td colspan="1" rowspan="1"> |
---|
397 | <span class="codefrag">NameNode</span>æä¹
ååšåå空éŽåäºå¡æ¥å¿çæ¬å°æ件系ç»è·¯åŸã</td> |
---|
398 | <td colspan="1" rowspan="1">åœè¿äžªåŒæ¯äžäžªéå·åå²çç®åœåè¡šæ¶ïŒnametableæ°æ®å°äŒè¢«å€å¶å°ææç®åœäžååäœå€ä»œã |
---|
399 | </td> |
---|
400 | |
---|
401 | </tr> |
---|
402 | |
---|
403 | <tr> |
---|
404 | |
---|
405 | <td colspan="1" rowspan="1">dfs.data.dir</td> |
---|
406 | <td colspan="1" rowspan="1"> |
---|
407 | <span class="codefrag">DataNode</span>åæŸåæ°æ®çæ¬å°æ件系ç»è·¯åŸïŒéå·åå²çåè¡šã |
---|
408 | </td> |
---|
409 | <td colspan="1" rowspan="1"> |
---|
410 | åœè¿äžªåŒæ¯éå·åå²çç®åœåè¡šæ¶ïŒæ°æ®å°è¢«ååšåšææç®åœäžïŒéåžžååžåšäžå讟å€äžã |
---|
411 | </td> |
---|
412 | |
---|
413 | </tr> |
---|
414 | |
---|
415 | <tr> |
---|
416 | |
---|
417 | <td colspan="1" rowspan="1">mapred.system.dir</td> |
---|
418 | <td colspan="1" rowspan="1">Map/Reduceæ¡æ¶ååšç³»ç»æ件çHDFSè·¯åŸãæ¯åŠ<span class="codefrag">/hadoop/mapred/system/</span>ã |
---|
419 | </td> |
---|
420 | <td colspan="1" rowspan="1">è¿äžªè·¯åŸæ¯é»è®€æ件系ç»ïŒHDFSïŒäžçè·¯åŸïŒ é¡»ä»æå¡åšå客æ·ç«¯äžåå¯è®¿é®ã |
---|
421 | </td> |
---|
422 | |
---|
423 | </tr> |
---|
424 | |
---|
425 | <tr> |
---|
426 | |
---|
427 | <td colspan="1" rowspan="1">mapred.local.dir</td> |
---|
428 | <td colspan="1" rowspan="1">æ¬å°æ件系ç»äžéå·åå²çè·¯åŸåè¡šïŒMap/Reduce䞎æ¶æ°æ®åæŸçå°æ¹ã |
---|
429 | </td> |
---|
430 | <td colspan="1" rowspan="1">å€è·¯åŸæå©äºå©çšç£çi/oã</td> |
---|
431 | |
---|
432 | </tr> |
---|
433 | |
---|
434 | <tr> |
---|
435 | |
---|
436 | <td colspan="1" rowspan="1">mapred.tasktracker.{map|reduce}.tasks.maximum</td> |
---|
437 | <td colspan="1" rowspan="1">æäž<span class="codefrag">TaskTracker</span>äžå¯è¿è¡çæ倧Map/Reduceä»»å¡æ°ïŒè¿äºä»»å¡å°åæ¶åèªè¿è¡ã |
---|
438 | </td> |
---|
439 | <td colspan="1" rowspan="1"> |
---|
440 | é»è®€äžº2ïŒ2䞪mapå2䞪reduceïŒïŒå¯äŸæ®ç¡¬ä»¶æ
åµæŽæ¹ã |
---|
441 | </td> |
---|
442 | |
---|
443 | </tr> |
---|
444 | |
---|
445 | <tr> |
---|
446 | |
---|
447 | <td colspan="1" rowspan="1">dfs.hosts/dfs.hosts.exclude</td> |
---|
448 | <td colspan="1" rowspan="1">讞å¯/æç»DataNodeåè¡šã</td> |
---|
449 | <td colspan="1" rowspan="1"> |
---|
450 | åŠæå¿
èŠïŒçšè¿äžªæ件æ§å¶è®žå¯çdatanodeåè¡šã |
---|
451 | </td> |
---|
452 | |
---|
453 | </tr> |
---|
454 | |
---|
455 | <tr> |
---|
456 | |
---|
457 | <td colspan="1" rowspan="1">mapred.hosts/mapred.hosts.exclude</td> |
---|
458 | <td colspan="1" rowspan="1">讞å¯/æç»TaskTrackeråè¡šã</td> |
---|
459 | <td colspan="1" rowspan="1"> |
---|
460 | åŠæå¿
èŠïŒçšè¿äžªæ件æ§å¶è®žå¯çTaskTrackeråè¡šã |
---|
461 | </td> |
---|
462 | |
---|
463 | </tr> |
---|
464 | |
---|
465 | </table> |
---|
466 | <p>éåžžïŒäžè¿°åæ°è¢«æ 记䞺 |
---|
467 | <a href="http://hadoop.apache.org/core/docs/r0.18.2/api/org/apache/hadoop/conf/Configuration.html#FinalParams"> |
---|
468 | final</a> 以确ä¿å®ä»¬äžè¢«çšæ·åºçšæŽæ¹ã |
---|
469 | </p> |
---|
470 | <a name="N1020C"></a><a name="%E7%8E%B0%E5%AE%9E%E4%B8%96%E7%95%8C%E7%9A%84%E9%9B%86%E7%BE%A4%E9%85%8D%E7%BD%AE"></a> |
---|
471 | <h5>ç°å®äžççé矀é
眮</h5> |
---|
472 | <p>è¿èçœååšå€§è§æš¡é矀äžè¿è¡<em>sort</em>åºåæµè¯(benchmark)æ¶äœ¿çšå°çäžäºé猺çé
眮ã</p> |
---|
473 | <ul> |
---|
474 | |
---|
475 | <li> |
---|
476 | |
---|
477 | <p>è¿è¡sort900çäžäºé猺çé
眮åŒïŒsort900å³åš900䞪èç¹çé矀äžå¯¹9TBçæ°æ®è¿è¡æåºïŒ</p> |
---|
478 | |
---|
479 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
480 | |
---|
481 | <tr> |
---|
482 | |
---|
483 | <th colspan="1" rowspan="1">åæ°</th> |
---|
484 | <th colspan="1" rowspan="1">ååŒ</th> |
---|
485 | <th colspan="1" rowspan="1">å€æ³š</th> |
---|
486 | |
---|
487 | </tr> |
---|
488 | |
---|
489 | <tr> |
---|
490 | |
---|
491 | <td colspan="1" rowspan="1">dfs.block.size</td> |
---|
492 | <td colspan="1" rowspan="1">134217728</td> |
---|
493 | <td colspan="1" rowspan="1">é对倧æ件系ç»ïŒHDFSçå倧å°å128MBã</td> |
---|
494 | |
---|
495 | </tr> |
---|
496 | |
---|
497 | <tr> |
---|
498 | |
---|
499 | <td colspan="1" rowspan="1">dfs.namenode.handler.count</td> |
---|
500 | <td colspan="1" rowspan="1">40</td> |
---|
501 | <td colspan="1" rowspan="1"> |
---|
502 | å¯åšæŽå€çNameNodeæå¡çº¿çšå»å€çæ¥èªå€§éDataNodeçRPC请æ±ã |
---|
503 | </td> |
---|
504 | |
---|
505 | </tr> |
---|
506 | |
---|
507 | <tr> |
---|
508 | |
---|
509 | <td colspan="1" rowspan="1">mapred.reduce.parallel.copies</td> |
---|
510 | <td colspan="1" rowspan="1">20</td> |
---|
511 | <td colspan="1" rowspan="1"> |
---|
512 | reduceå¯åšæŽå€ç并è¡æ·èŽåšä»¥è·å倧émapçèŸåºã |
---|
513 | </td> |
---|
514 | |
---|
515 | </tr> |
---|
516 | |
---|
517 | <tr> |
---|
518 | |
---|
519 | <td colspan="1" rowspan="1">mapred.child.java.opts</td> |
---|
520 | <td colspan="1" rowspan="1">-Xmx512M</td> |
---|
521 | <td colspan="1" rowspan="1"> |
---|
522 | 䞺map/reduceåèææºäœ¿çšæŽå€§çå ã |
---|
523 | </td> |
---|
524 | |
---|
525 | </tr> |
---|
526 | |
---|
527 | <tr> |
---|
528 | |
---|
529 | <td colspan="1" rowspan="1">fs.inmemory.size.mb</td> |
---|
530 | <td colspan="1" rowspan="1">200</td> |
---|
531 | <td colspan="1" rowspan="1"> |
---|
532 | 䞺reduceé¶æ®µå并mapèŸåºæéçå
åæ件系ç»åé
æŽå€çå
åã |
---|
533 | </td> |
---|
534 | |
---|
535 | </tr> |
---|
536 | |
---|
537 | <tr> |
---|
538 | |
---|
539 | <td colspan="1" rowspan="1">io.sort.factor</td> |
---|
540 | <td colspan="1" rowspan="1">100</td> |
---|
541 | <td colspan="1" rowspan="1">æ件æåºæ¶æŽå€çæµå°åæ¶è¢«åœå¹¶ã</td> |
---|
542 | |
---|
543 | </tr> |
---|
544 | |
---|
545 | <tr> |
---|
546 | |
---|
547 | <td colspan="1" rowspan="1">io.sort.mb</td> |
---|
548 | <td colspan="1" rowspan="1">200</td> |
---|
549 | <td colspan="1" rowspan="1">æé«æåºæ¶çå
åäžéã</td> |
---|
550 | |
---|
551 | </tr> |
---|
552 | |
---|
553 | <tr> |
---|
554 | |
---|
555 | <td colspan="1" rowspan="1">io.file.buffer.size</td> |
---|
556 | <td colspan="1" rowspan="1">131072</td> |
---|
557 | <td colspan="1" rowspan="1">SequenceFileäžçšå°ç读/åçŒå倧å°ã</td> |
---|
558 | |
---|
559 | </tr> |
---|
560 | |
---|
561 | </table> |
---|
562 | |
---|
563 | </li> |
---|
564 | |
---|
565 | <li> |
---|
566 | |
---|
567 | <p>è¿è¡sort1400åsort2000æ¶éèŠæŽæ°çé
眮ïŒå³åš1400䞪èç¹äžå¯¹14TBçæ°æ®è¿è¡æåºååš2000䞪èç¹äžå¯¹20TBçæ°æ®è¿è¡æåºïŒ</p> |
---|
568 | |
---|
569 | <table class="ForrestTable" cellspacing="1" cellpadding="4"> |
---|
570 | |
---|
571 | <tr> |
---|
572 | |
---|
573 | <th colspan="1" rowspan="1">åæ°</th> |
---|
574 | <th colspan="1" rowspan="1">ååŒ</th> |
---|
575 | <th colspan="1" rowspan="1">å€æ³š</th> |
---|
576 | |
---|
577 | </tr> |
---|
578 | |
---|
579 | <tr> |
---|
580 | |
---|
581 | <td colspan="1" rowspan="1">mapred.job.tracker.handler.count</td> |
---|
582 | <td colspan="1" rowspan="1">60</td> |
---|
583 | <td colspan="1" rowspan="1"> |
---|
584 | å¯çšæŽå€çJobTrackeræå¡çº¿çšå»å€çæ¥èªå€§éTaskTrackerçRPC请æ±ã |
---|
585 | </td> |
---|
586 | |
---|
587 | </tr> |
---|
588 | |
---|
589 | <tr> |
---|
590 | |
---|
591 | <td colspan="1" rowspan="1">mapred.reduce.parallel.copies</td> |
---|
592 | <td colspan="1" rowspan="1">50</td> |
---|
593 | <td colspan="1" rowspan="1"></td> |
---|
594 | |
---|
595 | </tr> |
---|
596 | |
---|
597 | <tr> |
---|
598 | |
---|
599 | <td colspan="1" rowspan="1">tasktracker.http.threads</td> |
---|
600 | <td colspan="1" rowspan="1">50</td> |
---|
601 | <td colspan="1" rowspan="1"> |
---|
602 | 䞺TaskTrackerçHttpæå¡å¯çšæŽå€çå·¥äœçº¿çšãreduceéè¿Httpæå¡è·åmapçäžéŽèŸåºã |
---|
603 | </td> |
---|
604 | |
---|
605 | </tr> |
---|
606 | |
---|
607 | <tr> |
---|
608 | |
---|
609 | <td colspan="1" rowspan="1">mapred.child.java.opts</td> |
---|
610 | <td colspan="1" rowspan="1">-Xmx1024M</td> |
---|
611 | <td colspan="1" rowspan="1">䜿çšæŽå€§çå çšäºmaps/reducesçåèææº</td> |
---|
612 | |
---|
613 | </tr> |
---|
614 | |
---|
615 | </table> |
---|
616 | |
---|
617 | </li> |
---|
618 | |
---|
619 | </ul> |
---|
620 | <a name="N1032A"></a><a name="Slaves"></a> |
---|
621 | <h4>Slaves</h4> |
---|
622 | <p>éåžžïŒäœ éæ©é矀äžçäžå°æºåšäœäžº<span class="codefrag">NameNode</span>ïŒåŠå€äžå°äžåçæºåšäœäžº<span class="codefrag">JobTracker</span>ãäœäžçæºåšå³äœäžº<span class="codefrag">DataNode</span>åäœäžº<span class="codefrag">TaskTracker</span>ïŒè¿äºè¢«ç§°ä¹äžº<em>slaves</em>ã</p> |
---|
623 | <p>åš<span class="codefrag">conf/slaves</span>æ件äžååºææslaveçäž»æºåæè
IPå°åïŒäžè¡äžäžªã</p> |
---|
624 | <a name="N10349"></a><a name="%E6%97%A5%E5%BF%97"></a> |
---|
625 | <h4>æ¥å¿</h4> |
---|
626 | <p>Hadoop䜿çš<a href="http://logging.apache.org/log4j/">Apache log4j</a>æ¥è®°åœæ¥å¿ïŒå®ç±<a href="http://commons.apache.org/logging/">Apache Commons Logging</a>æ¡æ¶æ¥å®ç°ãçŒèŸ<span class="codefrag">conf/log4j.properties</span>æ件å¯ä»¥æ¹åHadoopå®æ€è¿çšçæ¥å¿é
眮ïŒæ¥å¿æ ŒåŒçïŒã</p> |
---|
627 | <a name="N1035D"></a><a name="%E5%8E%86%E5%8F%B2%E6%97%A5%E5%BF%97"></a> |
---|
628 | <h5>åå²æ¥å¿</h5> |
---|
629 | <p>äœäžçåå²æ件éäžåæŸåš<span class="codefrag">hadoop.job.history.location</span>ïŒè¿äžªä¹å¯ä»¥æ¯åšååžåŒæ件系ç»äžçè·¯åŸïŒå
¶é»è®€åŒäžº<span class="codefrag">${HADOOP_LOG_DIR}/history</span>ãjobtrackerçweb UIäžæåå²æ¥å¿çweb UIéŸæ¥ã</p> |
---|
630 | <p>åå²æ件åšçšæ·æå®çç®åœ<span class="codefrag">hadoop.job.history.user.location</span>ä¹äŒè®°åœäžä»œïŒè¿äžªé
眮ç猺çåŒäžºäœäžçèŸåºç®åœãè¿äºæ件被åæŸåšæå®è·¯åŸäžç“_logs/history/”ç®åœäžãå æ€ïŒé»è®€æ
åµäžæ¥å¿æ件äŒåš“mapred.output.dir/_logs/history/”äžãåŠæå°<span class="codefrag">hadoop.job.history.user.location</span>æå®äžºåŒ<span class="codefrag">none</span>ïŒç³»ç»å°äžåè®°åœæ€æ¥å¿ã</p> |
---|
631 | <p>çšæ·å¯äœ¿çšä»¥äžåœä»€åšæå®è·¯åŸäžæ¥çåå²æ¥å¿æ±æ»<br> |
---|
632 | |
---|
633 | <span class="codefrag">$ bin/hadoop job -history output-dir</span> |
---|
634 | <br> |
---|
635 | è¿æ¡åœä»€äŒæŸç€ºäœäžçç»èä¿¡æ¯ïŒå€±èŽ¥åç»æ¢çä»»å¡ç»èã <br> |
---|
636 | å
³äºäœäžçæŽå€ç»èïŒæ¯åŠæåçä»»å¡ïŒä»¥å对æ¯äžªä»»å¡çæåçå°è¯æ¬¡æ°çå¯ä»¥çšäžé¢çåœä»€æ¥ç<br> |
---|
637 | |
---|
638 | <span class="codefrag">$ bin/hadoop job -history all output-dir</span> |
---|
639 | <br> |
---|
640 | </p> |
---|
641 | <p>äžäœå
šéšå¿
èŠçé
眮å®æïŒå°è¿äºæ件ååå°æææºåšç<span class="codefrag">HADOOP_CONF_DIR</span>è·¯åŸäžïŒéåžžæ¯<span class="codefrag">${HADOOP_HOME}/conf</span>ã</p> |
---|
642 | </div> |
---|
643 | |
---|
644 | |
---|
645 | <a name="N10395"></a><a name="Hadoop%E7%9A%84%E6%9C%BA%E6%9E%B6%E6%84%9F%E7%9F%A5"></a> |
---|
646 | <h2 class="h3">Hadoopçæºæ¶æç¥</h2> |
---|
647 | <div class="section"> |
---|
648 | <p>HDFSåMap/Reduceçç»ä»¶æ¯èœå€æç¥æºæ¶çã</p> |
---|
649 | <p> |
---|
650 | <span class="codefrag">NameNode</span>å<span class="codefrag">JobTracker</span>éè¿è°çšç®¡çåé
眮暡åäžçAPI<a href="http://hadoop.apache.org/core/docs/r0.18.2/api/org/apache/hadoop/net/DNSToSwitchMapping.html#resolve(java.util.List)">resolve</a>æ¥è·åé矀éæ¯äžªslaveç<span class="codefrag">æºæ¶id</span>ã该APIå°slaveçDNSå称ïŒæè
IPå°åïŒèœ¬æ¢ææºæ¶idã䜿çšåªäžªæš¡åæ¯éè¿é
眮项<span class="codefrag">topology.node.switch.mapping.impl</span>æ¥æå®çãæš¡åçé»è®€å®ç°äŒè°çš<span class="codefrag">topology.script.file.name</span>é
眮项æå®çäžäžªçèæ¬/åœä»€ã åŠætopology.script.file.nameæªè¢«è®Ÿçœ®ïŒå¯¹äºææäŒ å
¥çIPå°åïŒæš¡åäŒè¿å<span class="codefrag">/default-rack</span>äœäžºæºæ¶idãåšMap/Reduceéšåè¿æäžäžªé¢å€çé
眮项<span class="codefrag">mapred.cache.task.levels</span>ïŒè¯¥åæ°å³å®cacheç级æ°ïŒåšçœç»ææäžïŒãäŸåŠïŒåŠæé»è®€åŒæ¯2ïŒäŒå»ºç«äž€çº§çcacheïŒ äžçº§é对䞻æºïŒäž»æº -> ä»»å¡çæ å°ïŒåŠäžçº§é对æºæ¶ïŒæºæ¶ -> ä»»å¡çæ å°ïŒã |
---|
651 | </p> |
---|
652 | </div> |
---|
653 | |
---|
654 | |
---|
655 | <a name="N103BA"></a><a name="%E5%90%AF%E5%8A%A8Hadoop"></a> |
---|
656 | <h2 class="h3">å¯åšHadoop</h2> |
---|
657 | <div class="section"> |
---|
658 | <p>å¯åšHadoopé矀éèŠå¯åšHDFSé矀åMap/Reduceé矀ã</p> |
---|
659 | <p> |
---|
660 | æ ŒåŒåäžäžªæ°çååžåŒæ件系ç»ïŒ<br> |
---|
661 | |
---|
662 | <span class="codefrag">$ bin/hadoop namenode -format</span> |
---|
663 | |
---|
664 | </p> |
---|
665 | <p> |
---|
666 | åšåé
ç<span class="codefrag">NameNode</span>äžïŒè¿è¡äžé¢çåœä»€å¯åšHDFSïŒ<br> |
---|
667 | |
---|
668 | <span class="codefrag">$ bin/start-dfs.sh</span> |
---|
669 | |
---|
670 | </p> |
---|
671 | <p> |
---|
672 | <span class="codefrag">bin/start-dfs.sh</span>èæ¬äŒåç
§<span class="codefrag">NameNode</span>äž<span class="codefrag">${HADOOP_CONF_DIR}/slaves</span>æ件çå
容ïŒåšææååºçslaveäžå¯åš<span class="codefrag">DataNode</span>å®æ€è¿çšã</p> |
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673 | <p> |
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674 | åšåé
ç<span class="codefrag">JobTracker</span>äžïŒè¿è¡äžé¢çåœä»€å¯åšMap/ReduceïŒ<br> |
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675 | |
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676 | <span class="codefrag">$ bin/start-mapred.sh</span> |
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677 | |
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678 | </p> |
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679 | <p> |
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680 | <span class="codefrag">bin/start-mapred.sh</span>èæ¬äŒåç
§<span class="codefrag">JobTracker</span>äž<span class="codefrag">${HADOOP_CONF_DIR}/slaves</span>æ件çå
容ïŒåšææååºçslaveäžå¯åš<span class="codefrag">TaskTracker</span>å®æ€è¿çšã</p> |
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681 | </div> |
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682 | |
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683 | |
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684 | <a name="N103FE"></a><a name="%E5%81%9C%E6%AD%A2Hadoop"></a> |
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685 | <h2 class="h3">åæ¢Hadoop</h2> |
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686 | <div class="section"> |
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687 | <p> |
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688 | åšåé
ç<span class="codefrag">NameNode</span>äžïŒæ§è¡äžé¢çåœä»€åæ¢HDFSïŒ<br> |
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689 | |
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690 | <span class="codefrag">$ bin/stop-dfs.sh</span> |
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691 | |
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692 | </p> |
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693 | <p> |
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694 | <span class="codefrag">bin/stop-dfs.sh</span>èæ¬äŒåç
§<span class="codefrag">NameNode</span>äž<span class="codefrag">${HADOOP_CONF_DIR}/slaves</span>æ件çå
容ïŒåšææååºçslaveäžåæ¢<span class="codefrag">DataNode</span>å®æ€è¿çšã</p> |
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695 | <p> |
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696 | åšåé
ç<span class="codefrag">JobTracker</span>äžïŒè¿è¡äžé¢çåœä»€åæ¢Map/ReduceïŒ<br> |
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697 | |
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698 | <span class="codefrag">$ bin/stop-mapred.sh</span> |
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699 | <br> |
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700 | |
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701 | </p> |
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702 | <p> |
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703 | <span class="codefrag">bin/stop-mapred.sh</span>èæ¬äŒåç
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容ïŒåšææååºçslaveäžåæ¢<span class="codefrag">TaskTracker</span>å®æ€è¿çšã</p> |
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704 | </div> |
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705 | |
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706 | </div> |
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707 | <!--+ |
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721 | <div class="copyright"> |
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722 | Copyright © |
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723 | 2007 <a href="http://www.apache.org/licenses/">The Apache Software Foundation.</a> |
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724 | </div> |
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725 | <!--+ |
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