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Full Discussion: To get latest hdfs file system
Top Forums Shell Programming and Scripting To get latest hdfs file system Post 303035116 by Master_Mind on Wednesday 15th of May 2019 12:42:48 AM
Old 05-15-2019
To get latest hdfs file system
Hi All,

I am having below hdfs file system

Code:
/user/home/dte=2019_01_30/part_1
/user/home/dte=2019_01_30/part_2
/user/home/dte=2019_01_31/part_1

I need to take the latest month hdfs folder while passing date as parameter.
For eg . if i pass as Feb month i.e. 20190201(YYYYMMDD), then i need the output as 2019_01_31 by reading the above hdfs direcotories. I also need to check if there are any data then get the dte as 2019_01_31. For eg /user/home/dte=2019_01_31/part_1 should be more than 0 KB file

My try where i am struck

Code:
final_cnt =`hadoop fs -cat /user/home/dte=2019_01_31/part_1 | wc -l`
if [ $final_cnt >1 ]
then
finat_dte = `hdfs dfs -ls -R /user/home/dte=2019_01_31/ | grep  "^-" | tr -s " " | cut -d' ' -f6-8 | `

 

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LEARN ABOUT MOJAVE

createhomedir

createhomedir(1)					    BSD General Commands Manual 					  createhomedir(1)

NAME

     createhomedir -- create and populate home directories on the local computer.

SYNOPSIS

     createhomedir [-scbalh] [-n directoryDomainName] [-u username]

DESCRIPTION

     createhomedir provides several options for creating and populating home directories.

OPTIONS

     -s       creates home directories for server home paths only (default).

     -c       creates home directories for local home paths only.

     -b       creates home directories for both server and local home paths.

     -a       creates home directories for users defined in all directory domains of the server's search path.

     -l       creates home directories for users defined in the local directory domain.

     -L       causes the created home directory to be localized.

     -n directoryDomainName
	      creates home directories for users defined in a specific directory domain in the server's search path.

     -u username
	      creates a home directory for a specific user defined in the domain(s) identified in the -a, -l, or -n parameter. If you omit the -a,
	      -l, and -n parameters when you use the -u parameter, -a is assumed.

     -i       reads username list from standard input and creates specified home directories. Each username should be on its own line.

     -h       usage help.

FILES

     /usr/sbin/createhomedir			   location of tool

CAVEATS

     When using the -a option, search limits of various directory servers (such as Open Directory or Active Directory) can prevent all possible
     home directories from being created. In this case, you may need to specify the usernames explicitly.

Mac OS X							   May 31, 2019 							  Mac OS X
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