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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_partitioning_metadata(portal):
 """Add metadata columns required for partitioning machinery """

    logger.info("Adding partitioning metadata")

    add_metadata(portal, CATALOG_ANALYSIS_REQUEST_LISTING,
                 'getRawParentAnalysisRequest')

    add_metadata(portal, CATALOG_ANALYSIS_REQUEST_LISTING,
                 "getDescendantsUIDs")