org.apache.hadoop.hive.ql.plan

Class Statistics

java.lang.Object

org.apache.hadoop.hive.ql.plan.Statistics

All Implemented Interfaces:

Serializable

public class Statistics
extends Object
implements Serializable

Statistics. Describes the output of an operator in terms of size, rows, etc based on estimates.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Statistics.State

Constructor Summary

Constructors

Constructor and Description
Statistics()
Statistics(long nr, long ds, long fs, long numEcFiles)

Method Summary

Modifier and Type	Method and Description
void	addBasicStats(Statistics stats)
void	addToColumnStats(List<ColStatistics> colStats)
void	addToDataSize(long rds) Deprecated.
Statistics	clone()
String	extendedToString()
long	getAvgRowSize()
Statistics.State	getBasicStatsState()
ColStatistics	getColumnStatisticsFromColName(String colName)
List<ColStatistics>	getColumnStats()
Statistics.State	getColumnStatsState()
long	getDataSize()
long	getNumRows()
long	getRunTimeNumRows()
long	getTotalFileSize()
static Statistics.State	inferColumnStatsState(Statistics.State prevState, Statistics.State newState)
boolean	isRuntimeStats()
Statistics	scaleToRowCount(long newRowCount, boolean downScaleOnly)
void	setBasicStatsState(Statistics.State basicStatsState)
void	setColumnStats(List<ColStatistics> colStats)
void	setColumnStats(Map<String,ColStatistics> colStats)
void	setColumnStatsState(Statistics.State columnStatsState)
void	setDataSize(long dataSize)
void	setNumRows(long numRows)
void	setRunTimeNumRows(long runTimeNumRows)
void	setRuntimeStats(boolean runtimeStats)
void	setTotalFileSize(long totalFileSize)
String	toString()
String	toUserLevelExplainString()
void	updateColumnStatsState(Statistics.State newState)

Methods inherited from class java.lang.Object

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

Constructor Detail

Statistics

public Statistics()

Statistics

public Statistics(long nr,
                  long ds,
                  long fs,
                  long numEcFiles)

Method Detail

setTotalFileSize

public void setTotalFileSize(long totalFileSize)

getTotalFileSize

public long getTotalFileSize()

getNumRows

public long getNumRows()

setNumRows

public void setNumRows(long numRows)

getDataSize

public long getDataSize()

setDataSize

public void setDataSize(long dataSize)

getBasicStatsState

public Statistics.State getBasicStatsState()

setBasicStatsState

public void setBasicStatsState(Statistics.State basicStatsState)

getColumnStatsState

public Statistics.State getColumnStatsState()

setColumnStatsState

public void setColumnStatsState(Statistics.State columnStatsState)

toString

public String toString()

Overrides:

toString in class Object

toUserLevelExplainString

public String toUserLevelExplainString()

extendedToString

public String extendedToString()

clone

public Statistics clone()

Overrides:

clone in class Object

addBasicStats

public void addBasicStats(Statistics stats)

addToDataSize

@Deprecated
public void addToDataSize(long rds)

Deprecated.

setColumnStats

public void setColumnStats(Map<String,ColStatistics> colStats)

setColumnStats

public void setColumnStats(List<ColStatistics> colStats)

addToColumnStats

public void addToColumnStats(List<ColStatistics> colStats)

updateColumnStatsState

public void updateColumnStatsState(Statistics.State newState)

inferColumnStatsState

public static Statistics.State inferColumnStatsState(Statistics.State prevState,
                                                     Statistics.State newState)

getAvgRowSize

public long getAvgRowSize()

getColumnStatisticsFromColName

public ColStatistics getColumnStatisticsFromColName(String colName)

getColumnStats

public List<ColStatistics> getColumnStats()

getRunTimeNumRows

public long getRunTimeNumRows()

setRunTimeNumRows

public void setRunTimeNumRows(long runTimeNumRows)

scaleToRowCount

public Statistics scaleToRowCount(long newRowCount,
                                  boolean downScaleOnly)

isRuntimeStats

public boolean isRuntimeStats()

setRuntimeStats

public void setRuntimeStats(boolean runtimeStats)