> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Combined module properties

## Overview

These are the properties used to configure the mr-combined-config module.

## Module properties

<table><thead><tr><th>Key</th><th>Description</th><th>Default value</th></tr></thead><tbody><tr><td>mr.combined.agg-cache.size</td><td>The size of the aggregate cache for the MR CombinedCube.</td><td>-1</td></tr><tr><td>mr.combined.distribution.enable-data-duplication</td><td>Set to true to allow duplicate members in the distribution hierarchy of horizontally distributed data cubes. This is typically useful in a hybrid setup where all data is held in DirectQuery and only recent data in-memory. With data duplication enabled, and by specifying node priorities, the in-memory data can be preferred. Older members can then be periodically unloaded from the in-memory cube and instead accessed from DirectQuery.</td><td>false</td></tr></tbody></table>