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| 193 | <h1>Hadoop Archives</h1> |
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| 195 | <ul class="minitoc"> |
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| 196 | <li> |
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| 197 | <a href="#%E4%BB%80%E4%B9%88%E6%98%AFHadoop+archives%3F"> ä»ä¹æ¯Hadoop archives? </a> |
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| 199 | <li> |
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| 200 | <a href="#%E5%A6%82%E4%BD%95%E5%88%9B%E5%BB%BAarchive%3F"> åŠäœå建archive? </a> |
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| 201 | </li> |
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| 202 | <li> |
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| 203 | <a href="#%E5%A6%82%E4%BD%95%E6%9F%A5%E7%9C%8Barchives%E4%B8%AD%E7%9A%84%E6%96%87%E4%BB%B6%3F"> åŠäœæ¥çarchivesäžçæ件? </a> |
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| 204 | </li> |
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| 207 | |
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| 208 | <a name="N1000D"></a><a name="%E4%BB%80%E4%B9%88%E6%98%AFHadoop+archives%3F"></a> |
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| 209 | <h2 class="h3"> ä»ä¹æ¯Hadoop archives? </h2> |
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| 210 | <div class="section"> |
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| 211 | <p> |
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| 212 | Hadoop archivesæ¯ç¹æ®çæ¡£æ¡æ ŒåŒãäžäžªHadoop archive对åºäžäžªæ件系ç»ç®åœã |
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| 213 | Hadoop archiveçæ©å±åæ¯*.harãHadoop archiveå
å«å
æ°æ®ïŒåœ¢åŒæ¯_indexå_masterindxïŒåæ°æ®ïŒpart-*ïŒæ件ã_indexæ件å
å«äºæ¡£æ¡äžçæ件çæ件ååäœçœ®ä¿¡æ¯ã |
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| 214 | </p> |
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| 215 | </div> |
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| 216 | |
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| 217 | <a name="N10017"></a><a name="%E5%A6%82%E4%BD%95%E5%88%9B%E5%BB%BAarchive%3F"></a> |
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| 218 | <h2 class="h3"> åŠäœå建archive? </h2> |
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| 219 | <div class="section"> |
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| 220 | <p> |
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| 221 | |
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| 222 | <span class="codefrag">çšæ³: hadoop archive -archiveName name <src>* <dest></span> |
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| 223 | |
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| 224 | </p> |
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| 225 | <p> |
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| 226 | ç±-archiveNameé项æå®äœ èŠå建çarchiveçååãæ¯åŠfoo.harãarchiveçååçæ©å±ååºè¯¥æ¯*.harãèŸå
¥æ¯æ件系ç»çè·¯åŸåïŒè·¯åŸåçæ ŒåŒåå¹³æ¶ç衚蟟æ¹åŒäžæ ·ãå建çarchiveäŒä¿åå°ç®æ ç®åœäžã泚æå建archivesæ¯äžäžªMap/Reduce jobãäœ åºè¯¥åšmap reduceé矀äžè¿è¡è¿äžªåœä»€ãäžé¢æ¯äžäžªäŸåïŒ |
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| 227 | </p> |
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| 228 | <p> |
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| 229 | |
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| 230 | <span class="codefrag">hadoop archive -archiveName foo.har /user/hadoop/dir1 /user/hadoop/dir2 /user/zoo/</span> |
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| 231 | |
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| 232 | </p> |
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| 233 | <p> |
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| 234 | åšäžé¢çäŸåäžïŒ |
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| 235 | /user/hadoop/dir1 å /user/hadoop/dir2 äŒè¢«åœæ¡£å°è¿äžªæ件系ç»ç®åœäž |
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| 236 | -- /user/zoo/foo.harãåœå建archiveæ¶ïŒæºæ件äžäŒè¢«æŽæ¹æå é€ã |
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| 237 | </p> |
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| 238 | </div> |
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| 239 | |
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| 240 | <a name="N1002F"></a><a name="%E5%A6%82%E4%BD%95%E6%9F%A5%E7%9C%8Barchives%E4%B8%AD%E7%9A%84%E6%96%87%E4%BB%B6%3F"></a> |
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| 241 | <h2 class="h3"> åŠäœæ¥çarchivesäžçæ件? </h2> |
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| 242 | <div class="section"> |
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| 243 | <p> |
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| 244 | archiveäœäžºæ件系ç»å±æŽé²ç»å€çãæ以ææçfs shellåœä»€éœèœåšarchiveäžè¿è¡ïŒäœæ¯èŠäœ¿çšäžåçURIã |
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| 245 | åŠå€ïŒarchiveæ¯äžå¯æ¹åçãæ以éåœåïŒå é€åå建éœäŒè¿åé误ãHadoop Archives çURIæ¯ |
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| 246 | </p> |
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| 247 | <p> |
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| 248 | <span class="codefrag">har://scheme-hostname:port/archivepath/fileinarchive</span> |
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| 249 | </p> |
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| 250 | <p> |
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| 251 | åŠæ没æäŸscheme-hostnameïŒå®äŒäœ¿çšé»è®€çæ件系ç»ãè¿ç§æ
åµäžURIæ¯è¿ç§åœ¢åŒ |
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| 252 | </p> |
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| 253 | <p> |
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| 254 | <span class="codefrag"> |
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| 255 | har:///archivepath/fileinarchive</span> |
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| 256 | </p> |
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| 257 | <p> |
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| 258 | è¿æ¯äžäžªarchiveçäŸåãarchiveçèŸå
¥æ¯/dirãè¿äžªdirç®åœå
å«æ件fileaïŒfilebã |
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| 259 | æ/diråœæ¡£å°/user/hadoop/foo.barçåœä»€æ¯ |
---|
| 260 | </p> |
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| 261 | <p> |
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| 262 | <span class="codefrag">hadoop archive -archiveName foo.har /dir /user/hadoop</span> |
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| 263 | |
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| 264 | </p> |
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| 265 | <p> |
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| 266 | è·åŸå建çarchiveäžçæ件åè¡šïŒäœ¿çšåœä»€ |
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| 267 | </p> |
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| 268 | <p> |
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| 269 | <span class="codefrag">hadoop dfs -lsr har:///user/hadoop/foo.har</span> |
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| 270 | </p> |
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| 271 | <p>æ¥çarchiveäžçfileaæ件çåœä»€- |
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| 272 | </p> |
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| 273 | <p> |
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| 274 | <span class="codefrag">hadoop dfs -cat har:///user/hadoop/foo.har/dir/filea</span> |
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| 275 | </p> |
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| 276 | </div> |
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| 277 | |
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| 278 | </div> |
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| 295 | 2007 <a href="http://www.apache.org/licenses/">The Apache Software Foundation.</a> |
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