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org.apache.spark.sql.delta.stats

DeltaScanGenerator

trait DeltaScanGenerator extends AnyRef

Trait representing a class that can generate DeltaScan given filters and a limit.

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DummySnapshot, OptimisticTransaction, OptimisticTransactionImpl, Snapshot, DataSkippingReader, DataSkippingReaderBase
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Abstract Value Members

  1. abstract def filesForScan(limit: Long, partitionFilters: Seq[Expression]): DeltaScan

    Returns a DeltaScan based on the given partition filters and limits.

  2. abstract def filesForScan(filters: Seq[Expression], keepNumRecords: Boolean = false): DeltaScan

    Returns a DeltaScan based on the given filters.

  3. abstract def filesWithStatsForScan(partitionFilters: Seq[Expression]): DataFrame

    Returns a DataFrame for the given partition filters.

    Returns a DataFrame for the given partition filters. The schema of returned DataFrame is nearly the same as AddFile, except that the stats field is parsed to a struct from a json string.

  4. abstract val snapshotToScan: Snapshot

    The snapshot that the scan is being generated on.

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