org.apache.parquet.column.impl

Class ColumnWriteStoreV2

java.lang.Object

org.apache.parquet.column.impl.ColumnWriteStoreV2

All Implemented Interfaces:

ColumnWriteStore

public class ColumnWriteStoreV2
extends Object
implements ColumnWriteStore

Constructor Summary

Constructors

Constructor and Description
ColumnWriteStoreV2(MessageType schema, PageWriteStore pageWriteStore, int pageSizeThreshold, ParquetProperties parquetProps)

Method Summary

Methods

Modifier and Type	Method and Description
void	endRecord() called to notify of record boundaries
void	flush() when we are done writing to flush to the underlying storage
long	getAllocatedSize() used for information
long	getBufferedSize() used to flush row groups to disk
Set<ColumnDescriptor>	getColumnDescriptors()
ColumnWriter	getColumnWriter(ColumnDescriptor path)
String	memUsageString() used for debugging pupose
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnWriteStoreV2

public ColumnWriteStoreV2(MessageType schema,
                  PageWriteStore pageWriteStore,
                  int pageSizeThreshold,
                  ParquetProperties parquetProps)

Method Detail

getColumnWriter

public ColumnWriter getColumnWriter(ColumnDescriptor path)

Specified by:

getColumnWriter in interface ColumnWriteStore

Parameters:

path - the column for which to create a writer

Returns:

the column writer for the given column

getColumnDescriptors

public Set<ColumnDescriptor> getColumnDescriptors()

toString

public String toString()

Overrides:

toString in class Object

getAllocatedSize

public long getAllocatedSize()

Description copied from interface: ColumnWriteStore

used for information

Specified by:

getAllocatedSize in interface ColumnWriteStore

Returns:

approximate size used in memory

getBufferedSize

public long getBufferedSize()

Description copied from interface: ColumnWriteStore

used to flush row groups to disk

Specified by:

getBufferedSize in interface ColumnWriteStore

Returns:

approximate size of the buffered encoded binary data

flush

public void flush()

Description copied from interface: ColumnWriteStore

when we are done writing to flush to the underlying storage

Specified by:

flush in interface ColumnWriteStore

memUsageString

public String memUsageString()

Description copied from interface: ColumnWriteStore

used for debugging pupose

Specified by:

memUsageString in interface ColumnWriteStore

Returns:

a formated string representing memory usage per column

endRecord

public void endRecord()

Description copied from interface: ColumnWriteStore

called to notify of record boundaries

Specified by:

endRecord in interface ColumnWriteStore