RDDStorageInfo RDDStorageInfo contains information about RDD persistence: RDD id RDD name Number of RDD partitions Number of cached RDD partitions Storage level ID Memory used Disk used Data distribution (as Seq[RDDDataDistribution]) Partitions (as Seq[RDDPartitionInfo]]) RDDStorageInfo is created exclusively when LiveRDD is requested to doUpdate (when requested to write). RDDStorageInfo is used when: web UI’s StoragePage is requested to render an HTML table row and an entire table for RDD details REST API’s AbstractApplicationResource is requested for rddList (at storage/rdd path) AppStatusStore is requested for rddList