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

static class

Statistics.State

Constructor Summary

Statistics()

Statistics(long nr, long ds)

Method Summary

void	addToColumnStats(List<ColStatistics> colStats)
void	addToDataSize(long rds)
void	addToNumRows(long nr)
Statistics	clone()
String	extendedToString()
long	getAvgRowSize()
Statistics.State	getBasicStatsState()
ColStatistics	getColumnStatisticsForColumn(String tabAlias, String colName)
ColStatistics	getColumnStatisticsFromColName(String colName)
ColStatistics	getColumnStatisticsFromFQColName(String fqColName)
List<ColStatistics>	getColumnStats()
Statistics.State	getColumnStatsState()
long	getDataSize()
long	getNumRows()
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)
String	toString()
void	updateColumnStatsState(Statistics.State newState)

Methods inherited from class java.lang.Object

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

Constructor Detail

Statistics

public Statistics()

Statistics

public Statistics(long nr,
                  long ds)

Method Detail

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

extendedToString

public String extendedToString()

clone

public Statistics clone()
                 throws CloneNotSupportedException

Overrides:

clone in class Object

Throws:

CloneNotSupportedException

addToNumRows

public void addToNumRows(long nr)

addToDataSize

public void addToDataSize(long rds)

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)

getAvgRowSize

public long getAvgRowSize()

getColumnStatisticsFromFQColName

public ColStatistics getColumnStatisticsFromFQColName(String fqColName)

getColumnStatisticsFromColName

public ColStatistics getColumnStatisticsFromColName(String colName)

getColumnStatisticsForColumn

public ColStatistics getColumnStatisticsForColumn(String tabAlias,
                                                  String colName)

getColumnStats

public List<ColStatistics> getColumnStats()