org.apache.flink.table.runtime.hashtable

类 LongHashPartition

java.lang.Object

org.apache.flink.runtime.memory.AbstractPagedInputView

org.apache.flink.table.runtime.hashtable.LongHashPartition

所有已实现的接口:

DataInput, org.apache.flink.core.memory.DataInputView, org.apache.flink.core.memory.SeekableDataInputView

public class LongHashPartition
extends org.apache.flink.runtime.memory.AbstractPagedInputView
implements org.apache.flink.core.memory.SeekableDataInputView

Partition for LongHybridHashTable.

The layout of the buckets inside a memory segment is as follows:

Hash mode: +----------------------------- Bucket area ---------------------------- | long key (8 bytes) | address (8 bytes) | | long key (8 bytes) | address (8 bytes) | | long key (8 bytes) | address (8 bytes) | | ... +----------------------------- Data area -------------------------- | size & address of next row with the same key (8bytes) | binary row | | size & address of next row with the same key (8bytes) | binary row | | size & address of next row with the same key (8bytes) | binary row | | ...

Dense mode: +----------------------------- Bucket area ---------------------------- | address1 (8 bytes) | address2 (8 bytes) | address3 (8 bytes) | ... Directly addressed by the index of the corresponding array of key values.

嵌套类概要

嵌套类

限定符和类型	类和说明
class	LongHashPartition.MatchIterator Iterator for probe match.

字段概要

从类继承的字段 org.apache.flink.runtime.memory.AbstractPagedInputView

headerLength

方法概要

限定符和类型	方法和说明
LongHashPartition.MatchIterator	get(long key, int hashCode) Returns an iterator for all the values for the given key, or null if no value found.
org.apache.flink.core.memory.MemorySegment[]	getBuckets()
protected int	getLimitForSegment(org.apache.flink.core.memory.MemorySegment segment)
protected org.apache.flink.core.memory.MemorySegment	nextSegment(org.apache.flink.core.memory.MemorySegment current)
void	serializeToPages(org.apache.flink.table.data.binary.BinaryRowData row)
void	setReadPosition(long pointer)

从类继承的方法 org.apache.flink.runtime.memory.AbstractPagedInputView

advance, clear, doAdvance, getCurrentPositionInSegment, getCurrentSegment, getCurrentSegmentLimit, getHeaderLength, read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, seekInput, skipBytes, skipBytesToRead

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.flink.core.memory.DataInputView

read, read, skipBytesToRead

从接口继承的方法 java.io.DataInput

readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, skipBytes

方法详细资料

get

public LongHashPartition.MatchIterator get(long key,
                                           int hashCode)

Returns an iterator for all the values for the given key, or null if no value found.

getBuckets

public org.apache.flink.core.memory.MemorySegment[] getBuckets()

setReadPosition

public void setReadPosition(long pointer)

指定者:

setReadPosition 在接口中 org.apache.flink.core.memory.SeekableDataInputView

nextSegment

protected org.apache.flink.core.memory.MemorySegment nextSegment(org.apache.flink.core.memory.MemorySegment current)
                                                          throws IOException

指定者:

nextSegment 在类中 org.apache.flink.runtime.memory.AbstractPagedInputView

抛出:

IOException

getLimitForSegment

protected int getLimitForSegment(org.apache.flink.core.memory.MemorySegment segment)

指定者:

getLimitForSegment 在类中 org.apache.flink.runtime.memory.AbstractPagedInputView

serializeToPages

public void serializeToPages(org.apache.flink.table.data.binary.BinaryRowData row)
                      throws IOException

抛出:

IOException