reduceContext.values

Property Description

This array holds all values associated with a unique key that was passed to the reduce stage for processing. These values are listed in lexicographical order.

When the map/reduce process includes a map stage, the key-value pairs passed to the reduce stage are derived from the values written by mapContext.write(options).

When the map stage is skipped, the values are determined by the getInputData stage:

If the input type is an array, it is the value in the element.
If the input type is an object, it is the value in the object.
If the input type is a result set, the value is a search.Result object converted to a JSON string with JSON.stringify().

Note:

Each value cannot exceed 1 megabyte.

Type

string[]

Since

2015.2

Syntax

The following code snippet shows the syntax for this member. It is not a functional example. For a complete script example, see Map/Reduce Script Samples.

          ...
function reduce(context)
{
    context.write({
        key: context.key , 
        value: context.values.length 
    }); 
}
...

Syntax

Related Topics