# Untitled number in DatamaskConfProcess Schema ```txt undefined#/properties/Jobs/items/properties/Output/properties/Coalesce ``` If set the process will coalesce partitions before write in the output. This is usually the number of files to be write in the ouput path. | Abstract | Extensible | Status | Identifiable | Custom Properties | Additional Properties | Access Restrictions | Defined In | | :------------------ | :--------- | :------------- | :---------------------- | :---------------- | :-------------------- | :------------------ | :------------------------------------------------------------------------ | | Can be instantiated | No | Unknown status | Unknown identifiability | Forbidden | Allowed | none | [datamask.schema.json\*](out/datamask.schema.json "open original schema") | ## Coalesce Type `number`