Configuring an auto increment generator based on Hazelcast in a cluster - 7.0

Talend MDM Platform Installation Guide for Windows

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For a cluster of MDM servers, an auto increment generator based on Hazelcast, which is a distributed in-memory data grid, is initialized automatically during the MDM server startup.

This implementation can boost performance for auto increment generation in cluster mode. If needed, you can customize its relevant basic or advanced configuration.

Note that Hazelcast will never be initialized if you set system.cluster to false in the file <$INSTALLDIR>\conf\mdm.conf.