Packages

c

org.apache.spark.sql.execution.datasources.parquet

SpecificParquetRecordReaderBase

abstract class SpecificParquetRecordReaderBase[T] extends RecordReader[Void, T]

Base class for custom RecordReaders for Parquet that directly materialize to T. This class handles computing row groups, filtering on them, setting up the column readers, etc. This is heavily based on parquet-mr's RecordReader. TODO: move this to the parquet-mr project. There are performance benefits of doing it this way, albeit at a higher cost to implement. This base class is reusable.

Linear Supertypes
RecordReader[Void, T], Closeable, AutoCloseable, AnyRef, Any
Known Subclasses
VectorizedParquetRecordReader
Ordering
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Inherited
  1. SpecificParquetRecordReaderBase
  2. RecordReader
  3. Closeable
  4. AutoCloseable
  5. AnyRef
  6. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new SpecificParquetRecordReaderBase()

Abstract Value Members

  1. abstract def getCurrentValue(): T
    Definition Classes
    RecordReader
    Annotations
    @throws( classOf[java.io.IOException] ) @throws( ... )
  2. abstract def getProgress(): Float
    Definition Classes
    RecordReader
    Annotations
    @throws( classOf[java.io.IOException] ) @throws( ... )
  3. abstract def nextKeyValue(): Boolean
    Definition Classes
    RecordReader
    Annotations
    @throws( classOf[java.io.IOException] ) @throws( ... )

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  6. def close(): Unit
    Definition Classes
    SpecificParquetRecordReaderBase → RecordReader → Closeable → AutoCloseable
    Annotations
    @Override()
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  10. def getCurrentKey(): Void
    Definition Classes
    SpecificParquetRecordReaderBase → RecordReader
    Annotations
    @Override()
  11. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  12. def initialize(fileSchema: MessageType, requestedSchema: MessageType, rowGroupReader: ParquetRowGroupReader, totalRowCount: Int): Unit
    Attributes
    protected[parquet]
    Annotations
    @VisibleForTesting()
  13. def initialize(path: String, columns: List[String]): Unit

    Initializes the reader to read the file at path with columns projected.

    Initializes the reader to read the file at path with columns projected. If columns is null, all the columns are projected.

    This is exposed for testing to be able to create this reader without the rest of the Hadoop split machinery. It is not intended for general use and those not support all the configurations.

    Attributes
    protected[parquet]
  14. def initialize(inputSplit: InputSplit, taskAttemptContext: TaskAttemptContext): Unit
    Definition Classes
    SpecificParquetRecordReaderBase → RecordReader
    Annotations
    @Override()
  15. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  16. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  17. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  18. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  19. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  20. def toString(): String
    Definition Classes
    AnyRef → Any
  21. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  22. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  23. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated
    Deprecated

Inherited from RecordReader[Void, T]

Inherited from Closeable

Inherited from AutoCloseable

Inherited from AnyRef

Inherited from Any

Ungrouped