Example 5—TEXT Format on a Hadoop Distributed File Server
Example 5—TEXT Format on a Hadoop Distributed File Server
Note: The gphdfs external table protocol is deprecated and will be
removed in the next major release of Greenplum Database.
Creates a readable external table, ext_expenses, using the gphdfs protocol. The column delimiter is a pipe ( | ).
=# CREATE EXTERNAL TABLE ext_expenses ( name text,
date date, amount float4, category text, desc1 text )
LOCATION ('gphdfs://hdfshost-1:8081/data/filename.txt')
FORMAT 'TEXT' (DELIMITER '|');
gphdfs requires only one data path.
For examples of reading and writing custom formatted data on a Hadoop Distributed File System, see Reading and Writing Custom-Formatted HDFS Data with gphdfs (Deprecated).