Considerations for using compaction on CDW Private Cloud

The first Hive Virtual Warehouse you create in Cloudera Data Warehouse (CDW) Private Cloud for a Database Catalog (not including the default Database Catalog) is automatically set as the compactor and performs all compaction work for subsequent Virtual Warehouses (Hive or Impala) created under that Database Catalog.

Consequently, you must take into account the query workload for compaction when you create the first Hive Virtual Warehouse. You must make sure that the warehouse has adequate resources to handle the compaction workload in addition to any other workloads you might run in that warehouse.