Purging the metadata version history
As the metadata repository is usually maintained in a database, it would be necessary to purge unnecessary and archaic customizations made to composites that are no longer applicable. Purging is only required for database-based MDS repositories, as file-based repositories do not maintain composite version histories. Purging the metadata version history from a partition deletes all unlabeled documents from it, leaving only the tip version (the latest version) even if it is unlabeled. Purging the metadata version history on a regular basis is a necessary maintenance activity to control database size or when its performance starts to degrade. Purging an MDS repository is performance intensive and hence should ...
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