| Interface | Description | 
|---|---|
| AppHistoryServerPlugin | An interface for creating history listeners(to replay event logs) defined in other modules like
 SQL, and setup the UI of the plugin to rebuild the history UI. | 
| Class | Description | 
|---|---|
| AppStatusUtils | |
| KVUtils | |
| LiveEntityHelpers | |
| LiveExecutorStageSummary | |
| LiveJob | |
| LiveRDD | Tracker for data related to a persisted RDD. | 
| LiveRDDDistribution | |
| LiveRDDPartition | Data about a single partition of a cached RDD. | 
| LiveResourceProfile | |
| LiveSpeculationStageSummary | |
| LiveStage | |
| LiveTask | |
| RDDPartitionSeq | A custom sequence of partitions based on a mutable linked list. | 
| SchedulerPool | |
| TaskIndexNames | Tasks have a lot of indices that are used in a few different places. |