HiveFilePart

Instance Constructors

new HiveFilePart(dialect: HiveDialect, file: LocatedFileStatus, metastoreSchema: StructType, projectionSchema: StructType, predicate: Option[Predicate], partitions: List[PartitionPart])(implicit fs: FileSystem, conf: Configuration)

metastoreSchema
the schema as present in the metastore and used to match up with the raw data in dialects where the schema is not present. For example with a CSV format in Hive, the metastoreSchema is required in order to know what each column represents. We can't use the projection schema for this because the projection schema might be in a different order.
projectionSchema
the schema actually required, optional in which case the metastoreSchema will be used. The reason the projectionSchema is pushed down to the dialects rather than being applied after is because some file schemas can read data more efficiently if they know they can omit some fields (eg Parquet).
predicate
predicate for filtering rows, is pushed down to the parquet reader for efficiency if the predicate can operate on the files.
partitions
a list of partition key-values for this file. We require this to repopulate the partition values when creating the final Row.

Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
val dialect: HiveDialect
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
AnyRef → Any
val file: LocatedFileStatus
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def iterator(): CloseableIterator[Seq[Row]]

Definition Classes
HiveFilePart → Part
val metastoreSchema: StructType

the schema as present in the metastore and used to match up with the raw data in dialects where the schema is not present.
the schema as present in the metastore and used to match up with the raw data in dialects where the schema is not present. For example with a CSV format in Hive, the metastoreSchema is required in order to know what each column represents. We can't use the projection schema for this because the projection schema might be in a different order.
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
val partitions: List[PartitionPart]

a list of partition key-values for this file.
a list of partition key-values for this file. We require this to repopulate the partition values when creating the final Row.
val predicate: Option[Predicate]

predicate for filtering rows, is pushed down to the parquet reader for efficiency if the predicate can operate on the files.
val projectionSchema: StructType

the schema actually required, optional in which case the metastoreSchema will be used.
the schema actually required, optional in which case the metastoreSchema will be used. The reason the projectionSchema is pushed down to the dialects rather than being applied after is because some file schemas can read data more efficiently if they know they can omit some fields (eg Parquet).
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Doc: package hive

class HiveFilePart extends Part

Instance Constructors

new HiveFilePart(dialect: HiveDialect, file: LocatedFileStatus, metastoreSchema: StructType, projectionSchema: StructType, predicate: Option[Predicate], partitions: List[PartitionPart])(implicit fs: FileSystem, conf: Configuration)

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

val dialect: HiveDialect

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

val file: LocatedFileStatus

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

def iterator(): CloseableIterator[Seq[Row]]

val metastoreSchema: StructType

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

val partitions: List[PartitionPart]

val predicate: Option[Predicate]

val projectionSchema: StructType

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from Part

Inherited from AnyRef

Inherited from Any

Ungrouped