Package org.apache.beam.sdk.transforms
Class Redistribute.RedistributeByKey<K,V>
- java.lang.Object
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- org.apache.beam.sdk.transforms.PTransform<PCollection<KV<K,V>>,PCollection<KV<K,V>>>
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- org.apache.beam.sdk.transforms.Redistribute.RedistributeByKey<K,V>
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- Type Parameters:
K
- The type of key being reshuffled on.V
- The type of value being reshuffled.
- All Implemented Interfaces:
java.io.Serializable
,HasDisplayData
- Enclosing class:
- Redistribute
public static class Redistribute.RedistributeByKey<K,V> extends PTransform<PCollection<KV<K,V>>,PCollection<KV<K,V>>>
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class org.apache.beam.sdk.transforms.PTransform
annotations, displayData, name, resourceHints
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description PCollection<KV<K,V>>
expand(PCollection<KV<K,V>> input)
Override this method to specify how thisPTransform
should be expanded on the givenInputT
.boolean
getAllowDuplicates()
Redistribute.RedistributeByKey<K,V>
withAllowDuplicates(boolean newAllowDuplicates)
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Methods inherited from class org.apache.beam.sdk.transforms.PTransform
addAnnotation, compose, compose, getAdditionalInputs, getAnnotations, getDefaultOutputCoder, getDefaultOutputCoder, getDefaultOutputCoder, getKindString, getName, getResourceHints, populateDisplayData, setDisplayData, setResourceHints, toString, validate, validate
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Method Detail
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withAllowDuplicates
public Redistribute.RedistributeByKey<K,V> withAllowDuplicates(boolean newAllowDuplicates)
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getAllowDuplicates
public boolean getAllowDuplicates()
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expand
public PCollection<KV<K,V>> expand(PCollection<KV<K,V>> input)
Description copied from class:PTransform
Override this method to specify how thisPTransform
should be expanded on the givenInputT
.NOTE: This method should not be called directly. Instead apply the
PTransform
should be applied to theInputT
using theapply
method.Composite transforms, which are defined in terms of other transforms, should return the output of one of the composed transforms. Non-composite transforms, which do not apply any transforms internally, should return a new unbound output and register evaluators (via backend-specific registration methods).
- Specified by:
expand
in classPTransform<PCollection<KV<K,V>>,PCollection<KV<K,V>>>
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