distcp - hadoop discp issue while copying singe file -


(note: need use distcp parallelism)

i have 2 files in /user/bhavesh folder

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i have 1 file in /user/bhavesh1 folder

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copying 2 files /user/bhavesh /user/uday folder (this work fine)

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this create /user/uday folder

copying 1 file /user/bhavesh1 /user/uday1 folder if creates file instead of folder

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what need if there 1 file /user/bhavesh1/emp1.csv need should create /user/uday1/emp1.csv [uday1 should form directory] suggestion or highly appreciated.

in unix systems, when u copy single file giving destination directory name ending /user/uday1/, destination directory created, hadoop fs -cp command fail if destination directory missing.

when comes hdfs distcp, file/dir names ending / ignored if it's single file. 1 workaround create destination directory before executing distcp command. may add -p option in -mkdir avoid directory exists error. 

hadoop fs -mkdir -p /user/uday1  ; hadoop distcp /user/bhavesh1/emp*.csv /user/uday1/

this works both single file , multiple files in source directory.


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