Class Summary Class Description CompositePassA compile-time pass composed of multiple compile-time passes, which each modifies an IR DAG. DefaultCompositePassA series of primitive passes that is applied commonly to all policies. LargeShuffleCompositePassA series of passes to optimize large shuffle with disk seek batching techniques. LoopOptimizationCompositePassA series of passes to perform LoopOptimization. SkewCompositePassPass to modify the DAG for a job to perform data skew. TransientResourceCompositePassA series of passes to harness transient resources.