org.apache.orc.impl

类 PhysicalFsWriter.VariantTracker

java.lang.Object

org.apache.orc.impl.PhysicalFsWriter.VariantTracker

封闭类:

PhysicalFsWriter

protected static class PhysicalFsWriter.VariantTracker
extends Object

Record the information about each column encryption variant. The unencrypted data and each encrypted column root are variants.

字段概要

字段

限定符和类型	字段和说明
protected org.apache.orc.OrcProto.ColumnStatistics[]	fileStats
protected org.apache.orc.impl.writer.StreamOptions	options
protected Map<org.apache.orc.impl.StreamName,org.apache.orc.impl.PhysicalFsWriter.BufferedStream>	streams
protected List<org.apache.orc.OrcProto.ColumnStatistics>[]	stripeStats
protected List<org.apache.orc.OrcProto.Stream>	stripeStatsStreams

方法概要

限定符和类型	方法和说明
org.apache.orc.impl.PhysicalFsWriter.BufferedStream	createStream(org.apache.orc.impl.StreamName name)
long	getFileBytes(int column) Computed the size of the given column on disk for this stripe.
List<org.apache.orc.OrcProto.Stream>	placeStreams(org.apache.orc.impl.StreamName.Area area, org.apache.orc.impl.PhysicalFsWriter.SizeCounters sizes) Place the streams in the appropriate area while updating the sizes with the number of bytes in the area.
void	writeStreams(org.apache.orc.impl.StreamName.Area area, org.apache.hadoop.fs.FSDataOutputStream raw) Write the streams in the appropriate area.

从类继承的方法 java.lang.Object

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

字段详细资料

streams

protected final Map<org.apache.orc.impl.StreamName,org.apache.orc.impl.PhysicalFsWriter.BufferedStream> streams

options

protected final org.apache.orc.impl.writer.StreamOptions options

stripeStats

protected final List<org.apache.orc.OrcProto.ColumnStatistics>[] stripeStats

stripeStatsStreams

protected final List<org.apache.orc.OrcProto.Stream> stripeStatsStreams

fileStats

protected final org.apache.orc.OrcProto.ColumnStatistics[] fileStats

方法详细资料

createStream

public org.apache.orc.impl.PhysicalFsWriter.BufferedStream createStream(org.apache.orc.impl.StreamName name)

placeStreams

public List<org.apache.orc.OrcProto.Stream> placeStreams(org.apache.orc.impl.StreamName.Area area,
                                                         org.apache.orc.impl.PhysicalFsWriter.SizeCounters sizes)

Place the streams in the appropriate area while updating the sizes with the number of bytes in the area.

参数:

area - the area to write

sizes - the sizes of the areas

返回:

the list of stream descriptions to add

writeStreams

public void writeStreams(org.apache.orc.impl.StreamName.Area area,
                         org.apache.hadoop.fs.FSDataOutputStream raw)
                  throws IOException

Write the streams in the appropriate area.

参数:

area - the area to write

raw - the raw stream to write to

抛出:

IOException

getFileBytes

public long getFileBytes(int column)

Computed the size of the given column on disk for this stripe. It excludes the index streams.

参数:

column - a column id

返回:

the total number of bytes