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io.delta.flink.source.internal.enumerator

SplitEnumeratorProvider

trait SplitEnumeratorProvider extends Serializable

Factory for SplitEnumerator.

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BoundedSplitEnumeratorProvider, ContinuousSplitEnumeratorProvider
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Abstract Value Members

  1. abstract def createEnumeratorForCheckpoint(checkpoint: DeltaEnumeratorStateCheckpoint[DeltaSourceSplit], configuration: Configuration, enumContext: SplitEnumeratorContext[DeltaSourceSplit], sourceConfiguration: DeltaConnectorConfiguration): SplitEnumerator[DeltaSourceSplit, DeltaEnumeratorStateCheckpoint[DeltaSourceSplit]]

    Creates SplitEnumerator instance from DeltaEnumeratorStateCheckpoint data.

    Creates SplitEnumerator instance from DeltaEnumeratorStateCheckpoint data.

    This method should be used when creating the SplitEnumerator instance during Flink's recovery from a checkpoint. This method will be called from org.apache.flink.api.connector.source.Source#restoreEnumerator(SplitEnumeratorContext, Object).

    checkpoint

    DeltaEnumeratorStateCheckpoint that should be used to create SplitEnumerator instance.

    configuration

    Hadoop Configuration that should be used to read Parquet files.

    enumContext

    SplitEnumeratorContext.

    sourceConfiguration

    DeltaConnectorConfiguration used for creating Delta Source.

    returns

    SplitEnumerator instance.

  2. abstract def createInitialStateEnumerator(deltaTablePath: Path, configuration: Configuration, enumContext: SplitEnumeratorContext[DeltaSourceSplit], sourceConfiguration: DeltaConnectorConfiguration): SplitEnumerator[DeltaSourceSplit, DeltaEnumeratorStateCheckpoint[DeltaSourceSplit]]

    Creates SplitEnumerator instance.

    Creates SplitEnumerator instance.

    This method should be used when creating the SplitEnumerator instance for the first time or without a Flink's checkpoint data. This method will be called from org.apache.flink.api.connector.source.Source#createEnumerator(SplitEnumeratorContext).

    deltaTablePath

    Path for Delta table.

    configuration

    Hadoop Configuration that should be used to read Parquet files.

    enumContext

    SplitEnumeratorContext.

    sourceConfiguration

    DeltaConnectorConfiguration used for creating Delta Source.

    returns

    SplitEnumerator instance.

  3. abstract def getBoundedness(): Boundedness

    returns

    Boundedness type for SplitEnumerator created by this provider.

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