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Interface Summary |
| CombineFn.Aggregator<T> |
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| CombineFn.AggregatorFactory<T> |
Interface for constructing new aggregator instances. |
| Emitter<T> |
Interface for writing outputs from a DoFn. |
| PCollection<S> |
A representation of an immutable, distributed collection of elements that is
the fundamental target of computations in Crunch. |
| PGroupedTable<K,V> |
The Crunch representation of a grouped PTable. |
| Pipeline |
Manages the state of a pipeline execution. |
| PTable<K,V> |
A sub-interface of PCollection that represents an immutable,
distributed multi-map of keys and values. |
| Source<T> |
A Source represents an input data set that is an input to one or more
MapReduce jobs. |
| SourceTarget<T> |
An interface for classes that implement both the Source and the
Target interfaces. |
| TableSource<K,V> |
The interface Source implementations that return a PTable. |
| Target |
A Target represents the output destination of a Crunch job. |
| Tuple |
A fixed-size collection of Objects, used in Crunch for representing joins
between PCollections. |
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Class Summary |
| CombineFn<S,T> |
A special DoFn implementation that converts an Iterable of
values into a single value. |
| CombineFn.AggregatorCombineFn<K,V> |
A CombineFn that delegates all of the actual work to an
Aggregator instance. |
| CombineFn.FirstNAggregator<V> |
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| CombineFn.LastNAggregator<V> |
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| CombineFn.MaxBigInts |
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| CombineFn.MaxDoubles |
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| CombineFn.MaxFloats |
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| CombineFn.MaxInts |
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| CombineFn.MaxLongs |
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| CombineFn.MaxNAggregator<V extends Comparable<V>> |
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| CombineFn.MinBigInts |
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| CombineFn.MinDoubles |
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| CombineFn.MinFloats |
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| CombineFn.MinInts |
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| CombineFn.MinLongs |
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| CombineFn.MinNAggregator<V extends Comparable<V>> |
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| CombineFn.PairAggregator<V1,V2> |
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| CombineFn.QuadAggregator<A,B,C,D> |
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| CombineFn.StringConcatAggregator |
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| CombineFn.SumBigInts |
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| CombineFn.SumDoubles |
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| CombineFn.SumFloats |
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| CombineFn.SumInts |
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| CombineFn.SumLongs |
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| CombineFn.TripAggregator<A,B,C> |
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| CombineFn.TupleNAggregator |
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| DoFn<S,T> |
Base class for all data processing functions in Crunch. |
| FilterFn<T> |
A DoFn for the common case of filtering the members of a
PCollection based on a boolean condition. |
| FilterFn.AndFn<S> |
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| FilterFn.NotFn<S> |
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| FilterFn.OrFn<S> |
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| GroupingOptions |
Options that can be passed to a groupByKey operation in order to
exercise finer control over how the partitioning, grouping, and sorting of
keys is performed. |
| GroupingOptions.Builder |
Builder class for creating GroupingOptions instances. |
| MapFn<S,T> |
A DoFn for the common case of emitting exactly one value for each
input record. |
| Pair<K,V> |
A convenience class for two-element Tuples. |
| PipelineResult |
Container for the results of a call to run or done on the
Pipeline interface that includes details and statistics about the component
stages of the data pipeline. |
| PipelineResult.StageResult |
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| Tuple3<V1,V2,V3> |
A convenience class for three-element Tuples. |
| Tuple4<V1,V2,V3,V4> |
A convenience class for four-element Tuples. |
| TupleN |
A Tuple instance for an arbitrary number of values. |