Video: Kuv yuav ua li cas thiaj tsim tau ib phau ntawv hauv HDFS DFS?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2024-01-18 08:24
- Tsim ib daim ntawv teev npe hauv HDFS . Kev siv: $ hdfs ua - mkdir
- Sau cov ntsiab lus ntawm a directory hauv HDFS .
- Upload ib cov ntaub ntawv rau HDFS .
- Download tau ib cov ntaub ntawv los ntawm HDFS .
- Kos ib lub xeev cov ntaub ntawv hauv HDFS .
- Saib cov ntsiab lus ntawm cov ntaub ntawv hauv HDFS .
- Luam ib cov ntaub ntawv los ntawm qhov chaw mus rau qhov chaw nyob rau hauv HDFS .
- Luam ib cov ntaub ntawv los ntawm / rau Local file system rau HDFS .
Xav txog qhov no, kuv yuav nkag mus rau hauv HDFS directory li cas?
3 Teb. Tsis muaj cd (hloov phau ntawv ) command in hdfs ua cov ntaub ntawv system. Koj tsuas tuaj yeem sau npe cov npe thiab siv lawv mus txog tom ntej phau ntawv . Koj muaj mus taug kev manually los ntawm kev muab txoj kev ua tiav siv cov lus txib ls.
Tom qab ntawd, lo lus nug yog, Kuv yuav luam ib daim ntawv teev npe ntawm HDFS mus rau hauv zos li cas? Koj tuaj yeem luam cov ntaub ntawv los ntawm hdfs mus rau lub zos filesystem los ntawm ob txoj hauv qab no:
- bin/hadoop fs -get /hdfs/source/path /localfs/destination/path.
- bin/hadoop fs -copyToLocal /hdfs/source/path /localfs/destination/path.
Tsuas yog li ntawd, HDFS directory yog dab tsi?
Hauv Hadoop , ob qho tib si cov tswv yim thiab cov zis ntawm ib txoj hauj lwm feem ntau yog khaws cia rau hauv cov ntaub ntawv sib koom hu ua Hadoop Distributed File System ( HDFS ). Raws li nws lub npe implies, HDFS yog cov ntaub ntawv kaw lus uas tau muab faib thoob plaws ntawm cov nodes ntawm pawg, thiab uas muab kev sib koom ua ke rau cov ntaub ntawv faib.
Hdfs DFS command yog dab tsi?
HDFS hais kom ua txav cov ntaub ntawv los ntawm qhov chaw mus rau qhov chaw. Qhov no lus txib tso cai rau ntau qhov chaw ib yam nkaus, nyob rau hauv rooj plaub uas lub hom phiaj xav tau ib daim ntawv teev npe. Kev siv: hdfs ua -mv Hais kom ua : hdfs ua -mv /user/ haoop ua /file1 /user/ haoop ua /file2.
Pom zoo:
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