-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathhadoop.mm
673 lines (673 loc) · 41.2 KB
/
hadoop.mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
<map version="1.0.1">
<!-- To view this file, download free mind mapping software FreeMind from http://freemind.sourceforge.net -->
<node CREATED="1337567821677" ID="ID_893958877" MODIFIED="1363683206971" TEXT="hadoop">
<font NAME="Dialog" SIZE="16"/>
<node CREATED="1337568372328" ID="ID_279630378" MODIFIED="1363672633396" POSITION="right" TEXT="Programming Model">
<font NAME="Dialog" SIZE="16"/>
<node CREATED="1337568464483" ID="ID_1951095488" MODIFIED="1397808838771" TEXT="MapReduce">
<node CREATED="1337568593356" ID="ID_1679863996" MODIFIED="1337568737641" TEXT="google 2004"/>
<node CREATED="1337568593356" ID="ID_950957626" MODIFIED="1337579948260" TEXT="origin from Lisp language"/>
<node CREATED="1337568593356" ID="ID_551356860" MODIFIED="1337568853048" TEXT="designed by Jeffrey Dean& Sanjay Ghemawat"/>
<node CREATED="1337568464483" ID="ID_228760941" MODIFIED="1337568716393" TEXT="process steps">
<node CREATED="1337568593356" ID="ID_689068627" MODIFIED="1337569840369" TEXT="split"/>
<node CREATED="1337568593356" ID="ID_189451556" MODIFIED="1337568616124" TEXT="map"/>
<node CREATED="1337568593356" ID="ID_772126080" MODIFIED="1337568624023" TEXT="shuffle"/>
<node CREATED="1337568593356" ID="ID_1460666718" MODIFIED="1337568636971" TEXT="reduce"/>
</node>
<node CREATED="1337572639683" ID="ID_1192955995" MODIFIED="1337572681182" TEXT="application instances">
<icon BUILTIN="bookmark"/>
<node CREATED="1337572684480" ID="ID_1407990868" MODIFIED="1337572724067" TEXT="phoenix(Stanford)"/>
<node CREATED="1337572776129" ID="ID_1882828956" MODIFIED="1337572804057" TEXT="Mars"/>
<node CREATED="1337572842201" ID="ID_260491530" MODIFIED="1337572845903" TEXT="Misco"/>
</node>
</node>
</node>
<node CREATED="1337579608816" ID="ID_43285480" MODIFIED="1421986006017" POSITION="right" TEXT="installation">
<node CREATED="1337579616954" ID="ID_1868279812" MODIFIED="1421044003202" TEXT="single Node setup">
<node CREATED="1421044024750" ID="ID_471713622" MODIFIED="1496596176116" TEXT="standalone (on native Linux FS)">
<node CREATED="1337579894837" ID="ID_562124024" LINK="http://hadoop.apache.org/common/docs/r1.0.3/single_node_setup.html" MODIFIED="1421044045647" TEXT="http://hadoop.apache.org/common/docs/r1.0.3/single_node_setup.html"/>
<node CREATED="1337580076243" ID="ID_565886242" MODIFIED="1421044045645" TEXT="Required Software">
<node CREATED="1337580101191" ID="ID_325173541" MODIFIED="1337580169182" TEXT="Java(TM) 1.6.x"/>
<node CREATED="1337580169649" ID="ID_738959818" MODIFIED="1337580175779" TEXT="ssh sshd"/>
</node>
<node CREATED="1337580245378" ID="ID_1902479628" MODIFIED="1421044045637" TEXT="Installing Software">
<node CREATED="1337580253813" ID="ID_1860337452" MODIFIED="1337586565670">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
$ sudo apt-get install ssh
</p>
<p>
$ sudo apt-get install rsync
</p>
</body>
</html></richcontent>
</node>
</node>
<node CREATED="1337585446693" ID="ID_917919675" MODIFIED="1421044045625" TEXT="Prepare to Start the Hadoop Cluster">
<node CREATED="1337585457223" ID="ID_1019528577" MODIFIED="1337586673365">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
edit  conf/hadoop-env.sh:JAVA_HOME
</p>
<p>
$bin/hadoop
</p>
</body>
</html></richcontent>
</node>
</node>
<node CREATED="1337586404048" ID="ID_1433921778" MODIFIED="1421044045613" TEXT="Standalone Operation">
<node CREATED="1337586414259" ID="ID_1932413969" MODIFIED="1337586432141">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
$ mkdir input<br/>$ cp conf/*.xml input<br/>$ bin/hadoop jar hadoop-examples-*.jar grep input output 'dfs[a-z.]+'<br/>$ cat output/*
</p>
</body>
</html></richcontent>
</node>
</node>
</node>
<node CREATED="1337586710963" ID="ID_1677725611" MODIFIED="1421054073525" TEXT="Pseudo-Distributed (on HDFS)">
<node CREATED="1337586750388" ID="ID_261451974" MODIFIED="1421052699058" TEXT="Configuration">
<node CREATED="1363677103432" ID="ID_407143093" MODIFIED="1421049379173" TEXT="NameNode(hdfs)">
<node CREATED="1337586776204" ID="ID_1962991149" MODIFIED="1363677131636" TEXT="conf/core-site.xml:">
<node CREATED="1337586809413" ID="ID_1356849537" MODIFIED="1363677133654">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre class="code"><configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9000</value>
</property>
</configuration></pre>
</body>
</html></richcontent>
</node>
</node>
<node CREATED="1337586817313" ID="ID_202252494" MODIFIED="1337586838784" TEXT="conf/hdfs-site.xml:">
<node CREATED="1337586852727" ID="ID_344018800" MODIFIED="1421044190095">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre class="code"><configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration></pre>
</body>
</html></richcontent>
</node>
<node CREATED="1421052187986" ID="ID_1566227647" MODIFIED="1421052196478" TEXT="dfs.name.dir"/>
<node CREATED="1421052196689" ID="ID_393774482" MODIFIED="1421052200558" TEXT="dfs.data.dir"/>
<node CREATED="1421049380786" ID="ID_950485769" MODIFIED="1421052286888" TEXT="dfs.http.address">
<node CREATED="1421049398333" ID="ID_349349626" MODIFIED="1421049403418" TEXT="50070"/>
</node>
<node CREATED="1421049404299" ID="ID_518575830" MODIFIED="1421052286885" TEXT="dfs.datanode.http.address">
<node CREATED="1421049439207" ID="ID_213971170" MODIFIED="1421049444137" TEXT="50075"/>
</node>
<node CREATED="1421049444825" ID="ID_1784918897" MODIFIED="1421052286882" TEXT="dfs.secondary.http.address">
<node CREATED="1421049472111" ID="ID_1656533136" MODIFIED="1421049476226" TEXT="50090"/>
</node>
</node>
</node>
<node CREATED="1363677141010" ID="ID_1419059747" MODIFIED="1363677148399" TEXT="JobTracker">
<node CREATED="1337586855915" ID="ID_1519196939" MODIFIED="1363677149748" TEXT="conf/mapred-site.xml:">
<node CREATED="1337586878178" ID="ID_979747595" MODIFIED="1337586878178">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre class="code"><configuration>
<property>
<name>mapred.job.tracker</name>
<value>localhost:9001</value>
</property>
</configuration></pre>
</body>
</html></richcontent>
</node>
</node>
<node CREATED="1421049635950" ID="ID_1874756357" MODIFIED="1421049789262" TEXT="mapred.jop.tracker.http.address">
<node CREATED="1421049639635" ID="ID_163665804" MODIFIED="1421049689757" TEXT="50030"/>
</node>
<node CREATED="1421049690468" ID="ID_1504492945" MODIFIED="1421049789260" TEXT="mapred.task.tracker.http.address">
<node CREATED="1421049696906" ID="ID_776144164" MODIFIED="1421049705251" TEXT="50060"/>
</node>
</node>
</node>
<node CREATED="1337586919874" ID="ID_1905145579" MODIFIED="1337673254325" TEXT="Setup passphraseless ssh">
<node CREATED="1337586937594" ID="ID_1385505633" MODIFIED="1337586937594">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
<span class="codefrag">$ ssh localhost</span>
</p>
<p>
If you cannot ssh to localhost without a passphrase, execute the following commands:<br/><span class="codefrag">$ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa</span><br/><span class="codefrag">$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys</span>
</p>
</body>
</html></richcontent>
</node>
</node>
<node CREATED="1337588283701" ID="ID_1007102768" MODIFIED="1337673256631" TEXT="Execution">
<node CREATED="1337588332344" ID="ID_276736963" MODIFIED="1337588423468">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
$ bin/hadoop namenode -format<br/>$ bin/start-all.sh
</p>
<p>
$ bin/hadoop fs -put conf input<br/>$ bin/hadoop jar hadoop-examples-*.jar grep input output 'dfs[a-z.]+'
</p>
<p>
$ bin/hadoop fs -get output output<br/>$ cat output/*<br/>$ bin/stop-all.sh
</p>
</body>
</html></richcontent>
</node>
</node>
</node>
</node>
<node CREATED="1337579626051" ID="ID_514272376" MODIFIED="1337579638512" TEXT="cluster Node setup">
<node CREATED="1363679501014" ID="ID_1430896903" MODIFIED="1421054026964" TEXT="repeat single Node setup serveral times "/>
<node CREATED="1421054027241" ID="ID_401029039" MODIFIED="1421054035483" TEXT="conf/masters"/>
<node CREATED="1421054035735" ID="ID_9418021" MODIFIED="1421054040847" TEXT="conf/slaves"/>
<node CREATED="1421054041368" ID="ID_313191596" MODIFIED="1421054056106" TEXT="conf/core-site.xml">
<node CREATED="1421054057358" ID="ID_177663831" MODIFIED="1421054143304" TEXT="fs.default.name nonlocal ip"/>
</node>
<node CREATED="1421054089092" ID="ID_1124237253" MODIFIED="1421054105367" TEXT="conf/mapred-site.xml">
<node CREATED="1421054106497" ID="ID_560806415" MODIFIED="1421054147685" TEXT="mapred.job.tracker nonlocal ip"/>
</node>
<node CREATED="1496603148958" ID="ID_357102846" MODIFIED="1496603150598" TEXT="bin/hadoop namenode -format"/>
<node CREATED="1496603151143" ID="ID_1638385124" MODIFIED="1496603160284" TEXT="bin/start-dfs.sh"/>
<node CREATED="1496603160542" ID="ID_527812904" MODIFIED="1496603180052" TEXT="bin/start-mapred.sh"/>
</node>
</node>
<node CREATED="1337593735623" ID="ID_123347081" MODIFIED="1397632147753" POSITION="right" TEXT="configuration">
<node CREATED="1337593774656" ID="ID_678324184" MODIFIED="1337673267828" TEXT="conf/hadoop-env.sh">
<node CREATED="1337593915580" ID="ID_1038245250" MODIFIED="1337593923085" TEXT="JAVA_HOME"/>
<node CREATED="1337593923668" ID="ID_276247933" MODIFIED="1337593932153" TEXT="HADOOP_HOME"/>
</node>
<node CREATED="1337593893621" ID="ID_982192526" MODIFIED="1357390533763" TEXT="conf/core-site.xml">
<node CREATED="1337594234476" ID="ID_1825317588" MODIFIED="1337594234476">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
fs.default.name
</body>
</html></richcontent>
</node>
</node>
<node CREATED="1337594239754" ID="ID_1402690529" MODIFIED="1337594248680" TEXT="conf/hdfs-site.xml"/>
<node CREATED="1337594249387" ID="ID_1755797928" MODIFIED="1337594262875" TEXT="conf/mapred-site.xml"/>
</node>
<node CREATED="1337568901590" ID="ID_1143382261" MODIFIED="1389411220951" POSITION="left" TEXT="version">
<node CREATED="1337568908502" FOLDED="true" ID="ID_450763831" MODIFIED="1389411238051" TEXT="hadoop1.0">
<node CREATED="1337568923772" ID="ID_1774607153" MODIFIED="1337569019877" TEXT="architecuture">
<node CREATED="1337569025789" ID="ID_650084386" MODIFIED="1363670754438" TEXT="Common">
<icon BUILTIN="full-3"/>
<node CREATED="1337569268778" ID="ID_876492206" MODIFIED="1337569305003" TEXT="second develope&user app"/>
</node>
<node CREATED="1337569025281" ID="ID_375330315" MODIFIED="1344496289563" TEXT="MapReduce">
<icon BUILTIN="full-2"/>
<node CREATED="1337569257861" ID="ID_890189665" MODIFIED="1337569266131" TEXT="runtime"/>
</node>
<node CREATED="1337569024325" ID="ID_500732096" MODIFIED="1363670760210" TEXT="HDFS">
<icon BUILTIN="full-1"/>
<node CREATED="1337569059352" ID="ID_1462470270" MODIFIED="1337569074691" TEXT="hadoop distributed file system"/>
</node>
</node>
<node CREATED="1337569343251" ID="ID_155488023" MODIFIED="1337569706467" TEXT="procedure">
<node CREATED="1337569712487" ID="ID_993652479" MODIFIED="1337570934532" TEXT="init">
<icon BUILTIN="full-1"/>
<node CREATED="1337569849949" ID="ID_971356958" MODIFIED="1337569882208" TEXT="determine maptask number"/>
</node>
<node CREATED="1337569714339" ID="ID_890977651" MODIFIED="1337570942179" TEXT="schedule">
<icon BUILTIN="full-2"/>
<node CREATED="1343271940115" ID="ID_1814317500" MODIFIED="1343271943030" TEXT="master">
<node CREATED="1343272004351" ID="ID_960397633" MODIFIED="1343272007486" TEXT="NameNode"/>
<node CREATED="1343272007740" ID="ID_1160284739" MODIFIED="1343272012171" TEXT="JobTracker"/>
</node>
<node CREATED="1343271943406" ID="ID_346047666" MODIFIED="1343271945185" TEXT="slave">
<node CREATED="1343272044513" ID="ID_1998298999" MODIFIED="1343272048096" TEXT="DataNode"/>
<node CREATED="1343272048358" ID="ID_1063131515" MODIFIED="1343272055616" TEXT="TaskTracker">
<node CREATED="1337570557099" ID="ID_1195250568" MODIFIED="1343272090618" TEXT="slots">
<node CREATED="1337570322873" ID="ID_1423427246" MODIFIED="1337570582669" TEXT="Map Tasks"/>
<node CREATED="1337570444480" ID="ID_327698105" MODIFIED="1337570586634" TEXT="Reduce Tasks"/>
</node>
</node>
</node>
<node CREATED="1337570469777" ID="ID_1410699002" MODIFIED="1337570623363" TEXT="master-slave communication(heartbeat)"/>
</node>
<node CREATED="1337569714671" ID="ID_252845795" MODIFIED="1363670782789" TEXT="execute">
<icon BUILTIN="full-3"/>
<node CREATED="1337570739064" ID="ID_1265495408" MODIFIED="1344496319880" TEXT="MapTask">
<node CREATED="1337570754596" ID="ID_1062837264" MODIFIED="1337570758490" TEXT="Mapper">
<node CREATED="1337570760331" ID="ID_1091011847" MODIFIED="1337570761974" TEXT="map"/>
</node>
</node>
<node CREATED="1337570739064" ID="ID_1030625036" MODIFIED="1343272108877" TEXT="ReduceTask">
<node CREATED="1337570754596" ID="ID_365733759" MODIFIED="1337570806084" TEXT="Reducer">
<node CREATED="1337570760331" ID="ID_12395375" MODIFIED="1337570900608" TEXT="reduce"/>
</node>
</node>
</node>
<node CREATED="1337569714948" ID="ID_1896311105" MODIFIED="1337570949079" TEXT="destroy">
<icon BUILTIN="full-4"/>
</node>
</node>
<node CREATED="1337571007628" ID="ID_1393054250" MODIFIED="1337571050068" TEXT="implementation">
<node CREATED="1337571055143" ID="ID_394715243" MODIFIED="1343272156399" TEXT="master&slave">
<node CREATED="1337571141938" ID="ID_1429955887" MODIFIED="1337571296908" TEXT="Job Client 2 Job Tracker "/>
<node CREATED="1337571195587" ID="ID_1155742456" MODIFIED="1337571302092" TEXT="Task Tracker 2 Job Tracker"/>
</node>
<node CREATED="1337571233509" ID="ID_254300506" MODIFIED="1363670791309" TEXT="container&object">
<node CREATED="1337571264011" ID="ID_1791579283" MODIFIED="1337571344215" TEXT="Task Tracker o MapTask &Reduce Task"/>
</node>
</node>
<node CREATED="1343373185035" ID="ID_1940368714" MODIFIED="1343373243797" TEXT="web-based cluster UI">
<node CREATED="1343373246540" ID="ID_322824157" MODIFIED="1343373271824" TEXT="NameNode_host:50070"/>
<node CREATED="1343373272302" ID="ID_205595089" MODIFIED="1343373295147" TEXT="JobTracker_host:50030"/>
</node>
</node>
<node CREATED="1337571385366" ID="ID_978595499" MODIFIED="1344496248237" TEXT="hadoop0.23">
<node CREATED="1337571493109" ID="ID_1937560990" MODIFIED="1344496263691" TEXT="architectecture(Hadoop-Yarn)">
<node CREATED="1337572296261" ID="ID_248142113" MODIFIED="1337572460300" TEXT="Client"/>
<node CREATED="1337572448022" ID="ID_1166198217" MODIFIED="1337572493958" TEXT="Resouce Manager(RM)"/>
<node CREATED="1337572317224" ID="ID_337505567" MODIFIED="1337572408242" TEXT="Node Manager(NM)"/>
<node CREATED="1337572323876" ID="ID_1056409149" MODIFIED="1337572499293" TEXT="Container"/>
<node CREATED="1337572328441" ID="ID_441583436" MODIFIED="1337572418695" TEXT="Application Master(AP)"/>
</node>
<node CREATED="1337572384311" ID="ID_613623273" MODIFIED="1344496251803" TEXT="communications">
<node CREATED="1337572427921" ID="ID_1075998219" MODIFIED="1337572480552" TEXT="Client 2 RM"/>
<node CREATED="1337572500240" ID="ID_1941901495" MODIFIED="1337572507461" TEXT="RM 2 NM"/>
<node CREATED="1337572507937" ID="ID_1145514616" MODIFIED="1337572524699" TEXT="AP 2 Container"/>
<node CREATED="1337572527855" ID="ID_1546667611" MODIFIED="1337572538110" TEXT="Container 2 NM"/>
</node>
</node>
</node>
<node CREATED="1344476441187" ID="ID_1003658750" MODIFIED="1496596974450" POSITION="right" TEXT="features">
<node CREATED="1343288574548" ID="ID_237526338" MODIFIED="1344476458452" TEXT="data-intensive"/>
<node CREATED="1343288623011" ID="ID_1634852503" MODIFIED="1344476458454" TEXT="move-code-to-data"/>
<node CREATED="1343374471823" ID="ID_691447953" MODIFIED="1344476458457" TEXT="scaling out instead of scaling up">
<node CREATED="1343374497318" ID="ID_75287895" MODIFIED="1363679548372" TEXT="scaling out">
<node CREATED="1343374529177" ID="ID_1902333778" MODIFIED="1343374582369" TEXT="To run a bigger application you need to buy more commercial machines"/>
</node>
<node CREATED="1343374503745" FOLDED="true" ID="ID_1953694093" MODIFIED="1363679549402" TEXT="scaling up">
<node CREATED="1343374525580" ID="ID_1376764498" MODIFIED="1343374525580" TEXT="To run a bigger database you need to buy a bigger machine"/>
</node>
</node>
</node>
<node CREATED="1344496220170" ID="ID_590118039" MODIFIED="1421735264295" POSITION="right" TEXT="hdfs">
<node CREATED="1344496390952" ID="ID_1458830962" MODIFIED="1344496468985" TEXT="single file size 100 TB "/>
<node CREATED="1421735270931" ID="ID_1795393063" MODIFIED="1421735304213" TEXT="web UI: http://namenode:50070"/>
<node CREATED="1421735291998" ID="ID_596567257" MODIFIED="1421735328521" TEXT="URL: hdfs://namenode:9000/"/>
<node CREATED="1344513061492" ID="ID_1219158498" MODIFIED="1363679563345" TEXT="configuration">
<node CREATED="1344498193950" ID="ID_1112186251" MODIFIED="1344498226078" TEXT="<property>
 <name>fs.default.name</name>
 <value>hdfs://localhost:9000</value>
</property>"/>
<node CREATED="1344498348172" ID="ID_58683308" MODIFIED="1344498367660" TEXT="<property>
 <name>dfs.replication</name>
 <value>3</value>
</property>"/>
</node>
<node CREATED="1344497129111" ID="ID_1792743714" MODIFIED="1344513075085" TEXT="URL locate files">
<node CREATED="1344497158219" ID="ID_190425899" MODIFIED="1344497214946" TEXT="<hdfs|file>://host:port/path"/>
<node CREATED="1363679578298" ID="ID_608138082" MODIFIED="1363679578298" TEXT=""/>
</node>
<node CREATED="1344496390972" FOLDED="true" ID="ID_1049510404" MODIFIED="1496596989528" TEXT="hdfs file system interface">
<node CREATED="1344496649400" FOLDED="true" ID="ID_1843296199" MODIFIED="1421735215787" TEXT="file system shell">
<node CREATED="1344496805190" ID="ID_442109750" MODIFIED="1344496805190" TEXT="hadoop fs -cmd <args>">
<node CREATED="1344496832851" ID="ID_951110256" MODIFIED="1421045899555" TEXT="-cmd">
<node CREATED="1344499225341" ID="ID_1597396784" MODIFIED="1344499258662" TEXT="-fs [local |file_system_URL]"/>
<node CREATED="1344496836613" ID="ID_121427664" MODIFIED="1344496845933" TEXT="-ls"/>
<node CREATED="1344496846206" ID="ID_1540212007" MODIFIED="1344496848437" TEXT="-lsr"/>
<node CREATED="1344499275044" ID="ID_1761611772" MODIFIED="1344499282564" TEXT="-du"/>
<node CREATED="1344499304305" ID="ID_1667145059" MODIFIED="1344499306476" TEXT="-cp"/>
<node CREATED="1344499306734" ID="ID_1220754484" MODIFIED="1344499308501" TEXT="-mv"/>
<node CREATED="1344499277940" ID="ID_230374316" MODIFIED="1344499282562" TEXT="-dus"/>
<node CREATED="1344498885384" ID="ID_1296927306" MODIFIED="1344498891584" TEXT="-mkdir"/>
<node CREATED="1344499148273" ID="ID_100100301" MODIFIED="1344499324052" TEXT="-rm"/>
<node CREATED="1344499325822" ID="ID_1590426870" MODIFIED="1344499328941" TEXT="-rmr"/>
<node CREATED="1344499092202" ID="ID_1974840722" MODIFIED="1344499397919" TEXT="-put / -copyFromLocal"/>
<node CREATED="1344499095099" ID="ID_657417827" MODIFIED="1344499428862" TEXT="-get / -copyToLocal"/>
<node CREATED="1344499433149" ID="ID_64886447" MODIFIED="1344499436959" TEXT="-getmerge"/>
<node CREATED="1344499367451" ID="ID_706966907" MODIFIED="1344499458830" TEXT="-moveFromLocal"/>
<node CREATED="1344499462302" ID="ID_575944047" MODIFIED="1344499466692" TEXT="-moveToLocal"/>
<node CREATED="1344499496663" ID="ID_1068584106" MODIFIED="1344499500524" TEXT="-setrep"/>
<node CREATED="1344497650566" ID="ID_31608772" MODIFIED="1344499535035" TEXT="-cat">
<node CREATED="1344497654178" ID="ID_1464306838" MODIFIED="1344497654178" TEXT="bin/hadoop fs -cat 'hdfs://putian-scd1:54310//user/d5000/input/conf/*'"/>
</node>
<node CREATED="1344499535708" ID="ID_1719243884" MODIFIED="1344499538539" TEXT="-tail"/>
<node CREATED="1344499561004" ID="ID_1869418488" MODIFIED="1344499565394" TEXT="-touchz"/>
<node CREATED="1344499587659" ID="ID_1728140349" MODIFIED="1344499595322" TEXT="-test -[ezd]"/>
<node CREATED="1344499618075" ID="ID_163640574" MODIFIED="1344499620027" TEXT="-text"/>
<node CREATED="1344499620265" ID="ID_970256091" MODIFIED="1344499624699" TEXT="-stat"/>
<node CREATED="1344499638989" ID="ID_814139178" MODIFIED="1344499641477" TEXT="-chmod"/>
<node CREATED="1344499641707" ID="ID_1953014153" MODIFIED="1344499645295" TEXT="-chown"/>
<node CREATED="1344499645500" ID="ID_1853235111" MODIFIED="1344499648017" TEXT="-chgrp"/>
<node CREATED="1344499648396" ID="ID_909339438" MODIFIED="1344499651394" TEXT="-count"/>
<node CREATED="1344499151884" ID="ID_1249312862" MODIFIED="1344499154322" TEXT="-help"/>
</node>
</node>
</node>
<node CREATED="1344496657517" ID="ID_1829932688" MODIFIED="1344496691125" TEXT="hadoop java library">
<node CREATED="1344513087645" ID="ID_1564520735" MODIFIED="1344513302379" TEXT="pkg ">
<node CREATED="1344513197203" ID="ID_1996369749" MODIFIED="1344513197203" TEXT="org.apache.hadoop.fs"/>
</node>
<node CREATED="1344513286690" ID="ID_780664709" MODIFIED="1344513287524" TEXT="lib">
<node CREATED="1344513293768" ID="ID_204511769" MODIFIED="1344513324774" TEXT="hadoop-core*.jar"/>
</node>
<node CREATED="1344513332615" ID="ID_171830381" MODIFIED="1397632156199" TEXT="class">
<node CREATED="1344513744471" ID="ID_924064753" MODIFIED="1344513750340" TEXT="FileSystem">
<node CREATED="1344513764516" ID="ID_1071089321" MODIFIED="1344513808985" TEXT="public static FileSystem get(Configuration conf) throws IOException"/>
<node CREATED="1344513768814" ID="ID_353389479" MODIFIED="1344513856453" TEXT="public static LocalFileSystem getLocal(Configuration conf) throws IOException"/>
</node>
<node CREATED="1344513751259" ID="ID_160896495" MODIFIED="1344513896100" TEXT="Path"/>
<node CREATED="1344513935227" ID="ID_1531061636" MODIFIED="1344513940125" TEXT="FileStatus"/>
<node CREATED="1344513959711" ID="ID_208029332" MODIFIED="1344514190293" TEXT="FSDataInputStream"/>
<node CREATED="1344513966093" ID="ID_1637127602" MODIFIED="1344514193382" TEXT="FSDataOutputStream"/>
</node>
</node>
</node>
</node>
<node CREATED="1344514408063" ID="ID_80523645" MODIFIED="1496588015906" POSITION="right" TEXT="mapreduce">
<node CREATED="1344514443698" ID="ID_1416809702" MODIFIED="1344514446807" TEXT="pkg">
<node CREATED="1344514419864" ID="ID_245116403" MODIFIED="1344514449705" TEXT="org.apache.hadoop.mapreduce"/>
</node>
<node CREATED="1344515529019" ID="ID_664544608" MODIFIED="1496597695010" TEXT="key/value type">
<node CREATED="1344515727628" FOLDED="true" ID="ID_375271876" MODIFIED="1344516279346" TEXT="serialization">
<node CREATED="1344516094271" ID="ID_406860686" MODIFIED="1344516094271" TEXT="org.apache.hadoop.io.Writable">
<node CREATED="1344516136114" ID="ID_743712844" MODIFIED="1344516156703" TEXT="void 	readFields(DataInput in) ">
<node CREATED="1344516160643" ID="ID_1050706679" MODIFIED="1344516166178" TEXT="deserialize"/>
</node>
<node CREATED="1344516180720" ID="ID_1289070224" MODIFIED="1344516182050" TEXT="void 	write(DataOutput out) ">
<node CREATED="1344516184414" ID="ID_591282364" MODIFIED="1344516196109" TEXT="serialize"/>
</node>
</node>
</node>
<node CREATED="1344516059197" FOLDED="true" ID="ID_970965607" MODIFIED="1344516275287" TEXT="comparision">
<node CREATED="1344516069128" ID="ID_489211078" MODIFIED="1344516203785" TEXT="org.apache.hadoop.io.Comparable<T>">
<node CREATED="1344516262718" ID="ID_448091144" MODIFIED="1344516264962" TEXT=" int compareTo(T o)">
<node CREATED="1344516268689" ID="ID_1134144293" MODIFIED="1344516273579" TEXT="cmp"/>
</node>
</node>
</node>
<node CREATED="1344516280861" ID="ID_1964730946" MODIFIED="1344516345900" TEXT="value types must implement Writable"/>
<node CREATED="1344516349059" ID="ID_528315957" MODIFIED="1344516367826" TEXT="key types must implement WritableComparable"/>
<node CREATED="1344515541163" ID="ID_203904872" MODIFIED="1344516408747" TEXT="hadoop data type">
<node CREATED="1344515660230" ID="ID_1753350857" MODIFIED="1344837254986" TEXT="org.apache.hadoop.io.WritableComparable<T>">
<node CREATED="1344515947935" ID="ID_1172874599" MODIFIED="1344515956910" TEXT="BooleanWritable"/>
<node CREATED="1344516009114" ID="ID_1650485948" MODIFIED="1344516015194" TEXT="ByteWritable"/>
<node CREATED="1344515957286" ID="ID_1718055735" MODIFIED="1344515962851" TEXT="IntWritable"/>
<node CREATED="1344515994909" ID="ID_395510180" MODIFIED="1344516001067" TEXT="LongWritable"/>
<node CREATED="1344515963227" ID="ID_425357534" MODIFIED="1344515969832" TEXT="FloatWritable"/>
<node CREATED="1344515970114" ID="ID_1422158338" MODIFIED="1344515990542" TEXT="DoubleWritable"/>
<node CREATED="1344515990792" ID="ID_804118553" MODIFIED="1344516031156" TEXT="Text"/>
<node CREATED="1344516031646" ID="ID_195218875" MODIFIED="1344516042089" TEXT="NullWritable"/>
</node>
</node>
<node CREATED="1344515548057" ID="ID_1514696951" MODIFIED="1344515549102" TEXT="value">
<node CREATED="1344515593613" ID="ID_1449627567" MODIFIED="1344515625531" TEXT="org.apache.hadoop.io.Writable"/>
</node>
</node>
<node CREATED="1343376700756" FOLDED="true" ID="ID_1759582239" MODIFIED="1496597713373" TEXT="data flow">
<node CREATED="1344586489803" FOLDED="true" ID="ID_1944284200" MODIFIED="1397790361343" TEXT="input">
<icon BUILTIN="down"/>
<node CREATED="1344586600129" ID="ID_1273483326" MODIFIED="1344586602040" TEXT="chunk"/>
<node CREATED="1344586602288" ID="ID_1753578105" MODIFIED="1344586605536" TEXT="input split">
<node CREATED="1344587316963" ID="ID_221193225" MODIFIED="1344587338866" TEXT="record boundary">
<node CREATED="1344587403505" ID="ID_380248735" MODIFIED="1344587406898" TEXT="A machine processing a particular split may fetch a fragment of a record from a block other than its “main” block and which may reside remotely."/>
</node>
</node>
<node CREATED="1344587412273" ID="ID_268508958" MODIFIED="1344587438466" TEXT="record(key-value pair)">
<node CREATED="1344587445013" ID="ID_670458003" MODIFIED="1344589270084" TEXT="interface InputFormat">
<node CREATED="1344589678855" ID="ID_559663205" MODIFIED="1344589949883" TEXT="interface InputFormat">
<node CREATED="1344589705774" ID="ID_1247249843" MODIFIED="1344589705774">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre><a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>[] <b>getSplits</b>(<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job,
int numSplits)
throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
</body>
</html></richcontent>
<node CREATED="1344589952949" ID="ID_1140957648" MODIFIED="1344589979639" TEXT="each split must have more than mapred.min.split.size number of bytes but also be smaller than the block size of the filesystem."/>
<node CREATED="1344589980823" ID="ID_278470419" MODIFIED="1344590036855" TEXT="split size==block size of hdfs (default 64MB)"/>
</node>
<node CREATED="1344589720013" ID="ID_890718447" MODIFIED="1344589720013">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre><a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a><<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputFormat.html" title="type parameter in InputFormat">K</a>,<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputFormat.html" title="type parameter in InputFormat">V</a>> <b>getRecordReader</b>(<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a> split,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a> reporter)
throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
</body>
</html></richcontent>
<node CREATED="1344590264083" ID="ID_1010002608" MODIFIED="1344590267307" TEXT="Interface RecordReader<K,V>">
<node CREATED="1344590309022" ID="ID_1467606202" MODIFIED="1344590309022">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre>boolean <b>next</b>(<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/RecordReader.html" title="type parameter in RecordReader">K</a> key,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/RecordReader.html" title="type parameter in RecordReader">V</a> value)
throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
</body>
</html></richcontent>
</node>
</node>
</node>
</node>
<node CREATED="1344589798733" FOLDED="true" ID="ID_1575278024" MODIFIED="1344590650485" TEXT="abstract FileInputFormat">
<node CREATED="1344587496498" ID="ID_46000001" MODIFIED="1344587496498" TEXT="TextInputFormat"/>
<node CREATED="1344587638424" ID="ID_609800574" MODIFIED="1344587638424" TEXT="KeyValueTextInputFormat"/>
<node CREATED="1344587694547" ID="ID_619315168" MODIFIED="1344587694547" TEXT="SequenceFileInputFormat<K,V>"/>
<node CREATED="1344587721311" ID="ID_1311228014" MODIFIED="1344587721311" TEXT="NLineInputFormat"/>
<node CREATED="1344589190798" ID="ID_940418551" MODIFIED="1344589192910" TEXT="SequenceFileInputFormat">
<node CREATED="1344589216523" ID="ID_1555972223" MODIFIED="1344589222157" TEXT="sequence file"/>
</node>
</node>
</node>
<node CREATED="1344588875537" ID="ID_505147004" MODIFIED="1344837136817" TEXT="setInputFormat">
<node CREATED="1344588732937" ID="ID_475302616" MODIFIED="1344588835645" TEXT="org.apache.hadoop.mapred.JobConf::">
<node CREATED="1344588870182" ID="ID_1311374138" MODIFIED="1344588870182">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre>public void <b>setInputFormat</b>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred">InputFormat</a>> theClass)</pre>
<dl>
<dd>
Set the <a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred"><code>InputFormat</code></a> implementation for the map-reduce job.
<p>
</p>
</dd>
<dd>
<dl>
<dt>
<b>Parameters:</b>
</dt>
<dd>
<code>theClass</code> - the <a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputFormat.html" title="interface in org.apache.hadoop.mapred"><code>InputFormat</code></a> implementation for the map-reduce job.
</dd>
</dl>
</dd>
</dl>
</body>
</html></richcontent>
</node>
</node>
</node>
</node>
</node>
<node CREATED="1343376713927" ID="ID_1157567000" MODIFIED="1344823923894" TEXT="split">
<icon BUILTIN="full-1"/>
<node CREATED="1344517705576" ID="ID_1472148517" MODIFIED="1344823929755" TEXT="org.apache.hadoop.mapred.InputFormat<K,V>::">
<node CREATED="1344517879200" ID="ID_249325388" MODIFIED="1344517913220">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre><a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>[] <b>getSplits</b>(<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a> job,int numSplits)throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
</body>
</html></richcontent>
</node>
</node>
</node>
<node CREATED="1343376723644" ID="ID_633910599" MODIFIED="1344823935576" TEXT="map">
<icon BUILTIN="full-2"/>
<node CREATED="1344517923769" ID="ID_1044675138" MODIFIED="1344838015330" TEXT="org.apache.hadoop.mapred.Mapper<K1,V1,K2,V2>::">
<node CREATED="1344518168901" ID="ID_1958821708" MODIFIED="1344518168901">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre>void <b>map</b>(<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">K1</a> key,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">V1</a> value,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a><<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">K2</a>,<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">V2</a>> output,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a> reporter)
throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
</body>
</html></richcontent>
</node>
<node CREATED="1344838161374" ID="ID_339340231" MODIFIED="1344838166523" TEXT="JobConf.setNumReduceTasks(int)"/>
</node>
</node>
<node CREATED="1344520442230" FOLDED="true" ID="ID_1232956610" MODIFIED="1389411282709" TEXT="aggregate">
<icon BUILTIN="full-3"/>
<node CREATED="1344520634859" ID="ID_1656294124" MODIFIED="1344520639313" TEXT="local reduce"/>
</node>
<node CREATED="1343376736451" ID="ID_1643380882" MODIFIED="1389411296646" TEXT="shuffle">
<font NAME="SansSerif" SIZE="12"/>
<icon BUILTIN="full-4"/>
<node CREATED="1344518032435" ID="ID_1376726940" MODIFIED="1344518044847" TEXT="org.apache.hadoop.mapred.Partitioner<K2,V2>::">
<node CREATED="1344518113771" ID="ID_275230992" MODIFIED="1344518128980">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre>int <b>getPartition</b>(<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Partitioner.html" title="type parameter in Partitioner">K2</a> key,<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Partitioner.html" title="type parameter in Partitioner">V2</a> value,int numPartitions)</pre>
</body>
</html></richcontent>
</node>
</node>
<node CREATED="1344520217406" ID="ID_751836378" MODIFIED="1344520246779" TEXT="HashPartitioner (default)"/>
</node>
<node CREATED="1343376744906" ID="ID_589024009" MODIFIED="1344520454948" TEXT="reduce">
<icon BUILTIN="full-5"/>
<node CREATED="1344518433177" ID="ID_1763998100" MODIFIED="1344824300032" TEXT="org.apache.hadoop.mapred.Reducer<K2,V2,K3,V3>::">
<node CREATED="1344518430243" ID="ID_932634258" MODIFIED="1344518458302">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre>void <b>reduce</b>(<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">K2</a> key,
<a href="http://java.sun.com/javase/6/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">V2</a>> values,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a><<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">K3</a>,<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">V3</a>> output,
<a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a> reporter)
throws <a href="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
</body>
</html></richcontent>
</node>
<node CREATED="1344838202066" ID="ID_1373376270" MODIFIED="1344838211973" TEXT="JobConf.setNumMapTasks(int) "/>
</node>
</node>
<node CREATED="1344586485612" ID="ID_1386297289" MODIFIED="1344824293277" TEXT="output">
<icon BUILTIN="down"/>
<node CREATED="1344590481113" ID="ID_30317901" MODIFIED="1344590497470" TEXT="interface OutputFormat">
<node CREATED="1344590579287" ID="ID_265253168" MODIFIED="1344590592312" TEXT=" abstract FileOutputFormat">
<node CREATED="1344590873331" ID="ID_456010164" MODIFIED="1344590873331" TEXT="TextOutputFormat<K,V>"/>
<node CREATED="1344590890600" ID="ID_1799039698" MODIFIED="1344590893112" TEXT="SequenceFileOutputFormat<K,V>"/>
<node CREATED="1344590901413" ID="ID_232519181" MODIFIED="1344590903330" TEXT="NullOutputFormat<K,V>"/>
</node>
</node>
<node CREATED="1344590706811" ID="ID_523498540" MODIFIED="1344590715789" TEXT="setOutputFormat">
<node CREATED="1344590836363" ID="ID_1379004355" MODIFIED="1344590838718" TEXT="org.apache.hadoop.mapred.JobConf">
<node CREATED="1344590750438" ID="ID_640483327" MODIFIED="1344590843922">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<pre>public void <b>setOutputFormat</b>(<a href="http://java.sun.com/javase/6/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/OutputFormat.html" title="interface in org.apache.hadoop.mapred">OutputFormat</a>> theClass)</pre>
<dl>
<dd>
Set the <a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/OutputFormat.html" title="interface in org.apache.hadoop.mapred"><code>OutputFormat</code></a> implementation for the map-reduce job.
<p>
</p>
</dd>
<dd>
<dl>
<dt>
<b>Parameters:</b>
</dt>
<dd>
<code>theClass</code> - the <a href="file:///D:/hadoop-1.0.3/docs/api/org/apache/hadoop/mapred/OutputFormat.html" title="interface in org.apache.hadoop.mapred"><code>OutputFormat</code></a> implementation for the map-reduce job.
</dd>
</dl>
</dd>
</dl>
</body>
</html></richcontent>
</node>
</node>
</node>
</node>
</node>
<node CREATED="1344518474851" ID="ID_918805638" MODIFIED="1389411359832" TEXT="job control">
<node CREATED="1344518770437" ID="ID_605184512" MODIFIED="1344518805414" TEXT="org.apache.hadoop.mapreduce.Job">
<node CREATED="1344518808188" ID="ID_585902593" MODIFIED="1344518872203" TEXT="configure Job">
<node CREATED="1344518873885" ID="ID_34222880" MODIFIED="1344518910222" TEXT="Job(Configuration conf) "/>
<node CREATED="1344518946521" ID="ID_1055460769" MODIFIED="1344518948224" TEXT="Job(Configuration conf, String jobName) "/>
</node>
<node CREATED="1344518977510" ID="ID_1726939298" MODIFIED="1344518978686" TEXT="setJarByClass"/>
<node CREATED="1344518979839" ID="ID_1186970215" MODIFIED="1344518990169" TEXT="setMapperClass"/>
<node CREATED="1344518997821" ID="ID_1896079206" MODIFIED="1344518999016" TEXT="setCombinerClass"/>
<node CREATED="1344518999371" ID="ID_45549212" MODIFIED="1344519009361" TEXT="setReducerClass"/>
<node CREATED="1344519010105" ID="ID_1452951646" MODIFIED="1344519020841" TEXT="setOutputKeyClass"/>
<node CREATED="1344519021392" ID="ID_782985674" MODIFIED="1344519032838" TEXT="setOutputValueClass"/>
<node CREATED="1344519152181" ID="ID_82398746" MODIFIED="1344519204815" TEXT="public static void setInputPaths(JobConf conf, Path... inputPaths)"/>
<node CREATED="1344519182728" ID="ID_741137826" MODIFIED="1344519215455" TEXT="public static void setOutputPath(Job job, Path outputDir)"/>
</node>
</node>
</node>
</node>
</map>