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Top Forums Shell Programming and Scripting Read CSV file and delete hdfs, hive and hbase tables Post 303004880 by shivamayam on Tuesday 10th of October 2017 10:05:31 AM
Old 10-10-2017
Read CSV file and delete hdfs, hive and hbase tables

I have a CSV file with hdfs directories, hive tables and hbase tables.

1. first column - hdfs directories
2. second column - hive tables
3. third column - hbase tables

I have to check the csv file and look for the first column and delete the hdfs directory from the hdfs path, now search for the second column and delete the hive table, after that look for third column and delete the hbase table.

appreciate your help.
 

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NISPLUS_TABLE(5)						File Formats Manual						  NISPLUS_TABLE(5)

NAME
nisplus_table - Postfix NIS+ client SYNOPSIS
postmap -q "string" "nisplus:[name=%s];name.name." postmap -q - "nisplus:[name=%s];name.name." <inputfile DESCRIPTION
The Postfix mail system uses optional lookup tables. These tables are usually in dbm or db format. Alternatively, lookup tables can be specified as NIS+ databases. To find out what types of lookup tables your Postfix system supports use the "postconf -m" command. To test Postfix NIS+ lookup tables, use the "postmap -q" command as described in the SYNOPSIS above. QUERY SYNTAX
Most of the NIS+ query is specified via the NIS+ map name. The general format of a Postfix NIS+ map name is as follows: nisplus:[name=%s];name.name.name.:column Postfix NIS+ map names differ from what one normally would use with commands such as niscat: o With each NIS+ table lookup, "%s" is replaced by a version of the lookup string. There can be only one "%s" instance in a Postfix NIS+ map name. o Postfix NIS+ map names use ";" instead of ",", because the latter character is special in the Postfix main.cf file. Postfix replaces ";" characters in the map name by "," before making NIS+ queries. o The ":column" part in the NIS+ map name is not part of the actual NIS+ query. Instead, it specifies the number of the table column that provides the lookup result. When no ":column" is specified the first column (1) is used. EXAMPLE
A NIS+ aliases map might be queried as follows: alias_maps = dbm:/etc/mail/aliases, nisplus:[alias=%s];mail_aliases.org_dir.$mydomain.:1 This queries the local aliases file before the NIS+ file. SEE ALSO
postmap(1), Postfix lookup table manager README FILES
Use "postconf readme_directory" or "postconf html_directory" to locate this information. DATABASE_README, Postfix lookup table overview LICENSE
The Secure Mailer license must be distributed with this software. AUTHOR(S) Geoff Gibbs UK-HGMP-RC Hinxton Cambridge CB10 1SB, UK Adopted and adapted by: Wietse Venema IBM T.J. Watson Research P.O. Box 704 Yorktown Heights, NY 10598, USA NISPLUS_TABLE(5)
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