abstract class BucketMetadata[K1, K2, V] extends Serializable with HasDisplayData

Represents metadata in a JSON-serializable format to be stored alongside sorted-bucket files in a SortedBucketSink transform, and read/checked for compatibility in a SortedBucketSource transform.

Key encoding

BucketMetadata controls over how values are mapped to a key type (see: `[[#extractKeyPrimary(Object)]]`) and (see: `[[ #extractKeySecondary(Object)]]`), and how those bytes are encoded into byte[] (see: `[[ #getKeyBytesPrimary(Object)]]`, `[[#getKeyBytesSecondary(Object)]]`). Therefore, in order for two sources to be compatible in a `[[SortedBucketSource]]` transform, the `[[#keyClass]]` does not have to be the same, as long as the final byte encoding is equivalent. A `[[ #coderOverrides()]]` method is provided for any encoding overrides: for example, in Avro sources the `[[CharSequence]]` type should be encoded as a UTF-8 string.

Annotations
@JsonTypeInfo()
Source
BucketMetadata.java
Linear Supertypes
HasDisplayData, Serializable, AnyRef, Any
Known Subclasses
AvroBucketMetadata, JsonBucketMetadata, ParquetBucketMetadata, TensorFlowBucketMetadata
Ordering
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  2. By Inheritance
Inherited
  1. BucketMetadata
  2. HasDisplayData
  3. Serializable
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new BucketMetadata(version: Int, numBuckets: Int, numShards: Int, keyClass: Class[K1], keyClassSecondary: Class[K2], hashType: HashType, filenamePrefix: String)
  2. new BucketMetadata(version: Int, numBuckets: Int, numShards: Int, keyClass: Class[K1], keyClassSecondary: Class[K2], hashType: HashType)
  3. new BucketMetadata(version: Int, numBuckets: Int, numShards: Int, keyClass: Class[K1], hashType: HashType)

Abstract Value Members

  1. abstract def extractKeyPrimary(value: V): K1
  2. abstract def extractKeySecondary(value: V): K2

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(classOf[java.lang.CloneNotSupportedException]) @native()
  6. def coderOverrides(): Map[Class[_ <: AnyRef], Coder[_ <: AnyRef]]
    Annotations
    @JsonIgnore()
  7. def compatibleMetadataTypes(): Set[Class[_ <: BucketMetadata]]
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  10. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  11. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. def getFilenamePrefix(): String
  13. def getHashType(): HashType
  14. def getKeyClass(): Class[K1]
  15. def getKeyClassSecondary(): Class[K2]
  16. def getKeyCoder(): Coder[K1]
    Annotations
    @JsonIgnore()
  17. def getKeyCoderSecondary(): Coder[K2]
    Annotations
    @JsonIgnore()
  18. def getNumBuckets(): Int
  19. def getNumShards(): Int
  20. def getVersion(): Int
  21. def hasSecondaryKey(): Boolean
  22. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  23. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  24. def isPartitionCompatibleForPrimaryAndSecondaryKey(other: BucketMetadata): Boolean
  25. def isPartitionCompatibleForPrimaryKey(other: BucketMetadata): Boolean
  26. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  27. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  28. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  29. def populateDisplayData(builder: Builder): Unit
    Definition Classes
    BucketMetadata → HasDisplayData
    Annotations
    @Override()
  30. def primaryAndSecondaryComparableKeyBytes(value: V): ComparableKeyBytes
  31. def primaryComparableKeyBytes(value: V): ComparableKeyBytes
  32. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  33. def toString(): String
    Definition Classes
    BucketMetadata → AnyRef → Any
    Annotations
    @Override()
  34. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  35. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  36. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Inherited from HasDisplayData

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped