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hadoop functions

The table below lists all the hadoop built-in functions (in this namespace: http://marklogic.com/hadoop).

This module provides helper functions for creating advanced mode input and split queries for the MarkLogic Connector for Hadoop. For details, see the MarkLogic Connector for Hadoop Developer's Guide.

The Hadoop function module is installed as the following file:

  • install_dir/Modules/MarkLogic/hadoop.xqy

where install_dir is the directory in which MarkLogic Server is installed.

To use the hadoop.xqy module in your own XQuery modules, include the following line in your XQuery prolog:

import module namespace hadoop="http://marklogic.com/xdmp/hadoop" 
	    at "/MarkLogic/hadoop.xqy";
1 function
Function name Description
hadoop:get-splits This function returns (forest_id, record_count, host_name) tuples usable with the MarkLogic Connector for Hadoop to generate input splits in advanced input mode.