parquet.column.values.rle

Class RunLengthBitPackingHybridValuesWriter

java.lang.Object

parquet.column.values.ValuesWriter

parquet.column.values.rle.RunLengthBitPackingHybridValuesWriter

public class RunLengthBitPackingHybridValuesWriter
extends ValuesWriter

Author:

Alex Levenson

Constructor Summary

Constructors

Constructor and Description
RunLengthBitPackingHybridValuesWriter(int bitWidth, int initialCapacity)

Method Summary

Methods

Modifier and Type	Method and Description
long	getAllocatedSize()
long	getBufferedSize() used to decide if we want to work to the next page
BytesInput	getBytes()
Encoding	getEncoding() called after getBytes() and before reset()
String	memUsageString(String prefix)
void	reset() called after getBytes() to reset the current buffer and start writing the next page
void	writeInteger(int v)

Methods inherited from class parquet.column.values.ValuesWriter

createDictionaryPage, resetDictionary, writeBoolean, writeByte, writeBytes, writeDouble, writeFloat, writeLong

Methods inherited from class java.lang.Object

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

Constructor Detail

RunLengthBitPackingHybridValuesWriter

public RunLengthBitPackingHybridValuesWriter(int bitWidth,
                                     int initialCapacity)

Method Detail

writeInteger

public void writeInteger(int v)

Overrides:

writeInteger in class ValuesWriter

getBufferedSize

public long getBufferedSize()

Description copied from class: ValuesWriter

used to decide if we want to work to the next page

Specified by:

getBufferedSize in class ValuesWriter

Returns:

the size of the currently buffered data (in bytes)

getAllocatedSize

public long getAllocatedSize()

Specified by:

getAllocatedSize in class ValuesWriter

Returns:

the allocated size of the buffer ( > {@link #getBufferedMemorySize()() )

getBytes

public BytesInput getBytes()

Specified by:

getBytes in class ValuesWriter

Returns:

the bytes buffered so far to write to the current page

getEncoding

public Encoding getEncoding()

Description copied from class: ValuesWriter

called after getBytes() and before reset()

Specified by:

getEncoding in class ValuesWriter

Returns:

the encoding that was used to encode the bytes

reset

public void reset()

Description copied from class: ValuesWriter

called after getBytes() to reset the current buffer and start writing the next page

Specified by:

reset in class ValuesWriter

memUsageString

public String memUsageString(String prefix)

Specified by:

memUsageString in class ValuesWriter