TopKRelation

Instance Constructors

new TopKRelation(sqlContext: SnappyContext, topKName: String, topKOptions: Map[String, String], baseTable: Option[String], baseTableSchema: StructType, keyColumn: String, isStreamSummary: Boolean)(schema: StructType = ...)

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
def append(rows: RDD[Row], time: Long): Unit

Append a given RDD or rows into the relation.
Append a given RDD or rows into the relation.

Definition Classes
TopKRelation → SchemaInsertableRelation
final def asInstanceOf[T0]: T0

Definition Classes
Any
val baseTable: Option[String]
val baseTableSchema: StructType
def buildScan(requiredColumns: Array[String], filters: Array[Filter]): RDD[Row]

Definition Classes
TopKRelation → PrunedFilteredScan
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def create(ifExists: Boolean): Unit
def destroy(ifExists: Boolean): Unit

Destroy and cleanup this relation.
Destroy and cleanup this relation. It may include, but not limited to, dropping the external table that this relation represents.

Definition Classes
TopKRelation → DestroyRelation
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
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 initializeLogIfNecessary(): Unit

Attributes
protected
Definition Classes
Logging
def insert(data: DataFrame, overwrite: Boolean): Unit

Definition Classes
TopKRelation → InsertableRelation
def insertableRelation(sourceSchema: Seq[Attribute]): Option[InsertableRelation]

Return the actual relation to be used for insertion into the relation or None if sourceSchema cannot be inserted.
Return the actual relation to be used for insertion into the relation or None if sourceSchema cannot be inserted.

Definition Classes
TopKRelation → SchemaInsertableRelation
final def isDebugEnabled: Boolean

Definition Classes
Logging
final def isInfoEnabled: Boolean

Definition Classes
Logging
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
val isStreamSummary: Boolean
final def isTraceEnabled: Boolean

Definition Classes
Logging
val keyColumn: String
final var levelFlags: Int

Attributes
protected
Definition Classes
Logging
def log: Logger

Attributes
protected
Definition Classes
Logging
def logDebug(msg: ⇒ String, throwable: Throwable): Unit

Definition Classes
Logging
def logDebug(msg: ⇒ String): Unit

Definition Classes
Logging
def logError(msg: ⇒ String, throwable: Throwable): Unit

Definition Classes
Logging
def logError(msg: ⇒ String): Unit

Definition Classes
Logging
def logInfo(msg: ⇒ String, throwable: Throwable): Unit

Definition Classes
Logging
def logInfo(msg: ⇒ String): Unit

Definition Classes
Logging
def logName: String

Attributes
protected
Definition Classes
Logging
def logTrace(msg: ⇒ String, throwable: Throwable): Unit

Definition Classes
Logging
def logTrace(msg: ⇒ String): Unit

Definition Classes
Logging
def logWarning(msg: ⇒ String, throwable: Throwable): Unit

Definition Classes
Logging
def logWarning(msg: ⇒ String): Unit

Definition Classes
Logging
final var log_: Logger

Attributes
protected
Definition Classes
Logging
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
val needConversion: Boolean

Whether does it need to convert the objects in Row to internal representation, for example: java.lang.String to UTF8String java.lang.Decimal to Decimal
Whether does it need to convert the objects in Row to internal representation, for example: java.lang.String to UTF8String java.lang.Decimal to Decimal
If needConversion is false, buildScan() should return an RDD of InternalRow

Definition Classes
TopKRelation → BaseRelation
Since
1.4.0
Note
The internal representation is not stable across releases and thus data sources outside of Spark SQL should leave this as true.
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

Definition Classes
AnyRef
def resetLogger(): Unit

Attributes
protected
Definition Classes
Logging
val schema: StructType

Definition Classes
TopKRelation → BaseRelation
def sizeInBytes: Long

Returns an estimated size of this relation in bytes.
Returns an estimated size of this relation in bytes. This information is used by the planner to decide when it is safe to broadcast a relation and can be overridden by sources that know the size ahead of time. By default, the system will assume that tables are too large to broadcast. This method will be called multiple times during query planning and thus should not perform expensive operations for each invocation.

Definition Classes
BaseRelation
Since
1.3.0
Note
It is always better to overestimate size than underestimate, because underestimation could lead to execution plans that are suboptimal (i.e. broadcasting a very large table).
val sqlContext: SnappyContext

Definition Classes
TopKRelation → BaseRelation
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
val topKName: String
val topKOptions: Map[String, String]
def truncate(): Unit

Truncate the table represented by this relation.
Truncate the table represented by this relation.

Definition Classes
TopKRelation → DestroyRelation
def unhandledFilters(filters: Array[Filter]): Array[Filter]

Returns the list of Filters that this datasource may not be able to handle.
Returns the list of Filters that this datasource may not be able to handle. These returned Filters will be evaluated by Spark SQL after data is output by a scan. By default, this function will return all filters, as it is always safe to double evaluate a Filter. However, specific implementations can override this function to avoid double filtering when they are capable of processing a filter internally.

Definition Classes
BaseRelation
Since
1.6.0
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 topk

Instance Constructors

new TopKRelation(sqlContext: SnappyContext, topKName: String, topKOptions: Map[String, String], baseTable: Option[String], baseTableSchema: StructType, keyColumn: String, isStreamSummary: Boolean)(schema: StructType = ...)

Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

def append(rows: RDD[Row], time: Long): Unit

final def asInstanceOf[T0]: T0

val baseTable: Option[String]

val baseTableSchema: StructType

def buildScan(requiredColumns: Array[String], filters: Array[Filter]): RDD[Row]

def clone(): AnyRef

def create(ifExists: Boolean): Unit

def destroy(ifExists: Boolean): Unit

final def eq(arg0: AnyRef): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def initializeLogIfNecessary(): Unit

def insert(data: DataFrame, overwrite: Boolean): Unit

def insertableRelation(sourceSchema: Seq[Attribute]): Option[InsertableRelation]

final def isDebugEnabled: Boolean

final def isInfoEnabled: Boolean

final def isInstanceOf[T0]: Boolean

val isStreamSummary: Boolean

final def isTraceEnabled: Boolean

val keyColumn: String

final var levelFlags: Int

def log: Logger

def logDebug(msg: ⇒ String, throwable: Throwable): Unit

def logDebug(msg: ⇒ String): Unit

def logError(msg: ⇒ String, throwable: Throwable): Unit

def logError(msg: ⇒ String): Unit

def logInfo(msg: ⇒ String, throwable: Throwable): Unit

def logInfo(msg: ⇒ String): Unit

def logName: String

def logTrace(msg: ⇒ String, throwable: Throwable): Unit

def logTrace(msg: ⇒ String): Unit

def logWarning(msg: ⇒ String, throwable: Throwable): Unit

def logWarning(msg: ⇒ String): Unit

final var log_: Logger

final def ne(arg0: AnyRef): Boolean

val needConversion: Boolean

final def notify(): Unit

final def notifyAll(): Unit

def resetLogger(): Unit

val schema: StructType

def sizeInBytes: Long

val sqlContext: SnappyContext

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

val topKName: String

val topKOptions: Map[String, String]

def truncate(): Unit

def unhandledFilters(filters: Array[Filter]): Array[Filter]

final def wait(): Unit

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

final def wait(arg0: Long): Unit

Inherited from Product

Inherited from Equals

Inherited from Serializable

Inherited from Serializable

Inherited from Logging

Inherited from DestroyRelation

Inherited from SchemaInsertableRelation

Inherited from InsertableRelation

Inherited from PrunedFilteredScan

Inherited from BaseRelation

Inherited from AnyRef

Inherited from Any

Ungrouped