Package org.apache.pinot.segment.local.realtime.impl

Class RealtimeSegmentStatsHistory

java.lang.Object

org.apache.pinot.segment.local.realtime.impl.RealtimeSegmentStatsHistory

All Implemented Interfaces:

Serializable

public class RealtimeSegmentStatsHistory
extends Object
implements Serializable

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	RealtimeSegmentStatsHistory.ColumnStats
static class	RealtimeSegmentStatsHistory.SegmentStats

Field Summary

Fields

Modifier and Type	Field	Description
static org.slf4j.Logger	LOGGER

Method Summary

Modifier and Type	Method	Description
void	addSegmentStats(RealtimeSegmentStatsHistory.SegmentStats segmentStats)
static RealtimeSegmentStatsHistory	deserialzeFrom(File inFile)
int	getArraySize()
int	getCursor()
static int	getDefaultEstAvgColSize()
static int	getDefaultEstCardinality()
int	getEstimatedAvgColSize(String columnName)	Estimate the average size of a string column based on the past segments of the table.
int	getEstimatedCardinality(String columnName)	Estimate the cardinality of a column based on past segments of a table For now, we return the average value.
int	getEstimatedRowsToIndex()
long	getLatestSegmentMemoryConsumed()
static int	getMaxNumEntries()
RealtimeSegmentStatsHistory.SegmentStats	getSegmentStatsAt(int index)
boolean	isEmpty()
boolean	isFull()
static void	setMaxNumEntries(int maxNumEntries)
void	setMinIntervalBetweenUpdatesMillis(long millis)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

public static final org.slf4j.Logger LOGGER

Method Detail

getMaxNumEntries

public static int getMaxNumEntries()

getDefaultEstAvgColSize

public static int getDefaultEstAvgColSize()

getDefaultEstCardinality

public static int getDefaultEstCardinality()

setMaxNumEntries

public static void setMaxNumEntries(int maxNumEntries)

getCursor

public int getCursor()

getArraySize

public int getArraySize()

isFull

public boolean isFull()

isEmpty

public boolean isEmpty()

setMinIntervalBetweenUpdatesMillis

public void setMinIntervalBetweenUpdatesMillis(long millis)

addSegmentStats

public void addSegmentStats(RealtimeSegmentStatsHistory.SegmentStats segmentStats)

getEstimatedCardinality

public int getEstimatedCardinality(@Nonnull
                                   String columnName)

Estimate the cardinality of a column based on past segments of a table For now, we return the average value.

Parameters:

columnName -

Returns:

estimated

getEstimatedAvgColSize

public int getEstimatedAvgColSize(@Nonnull
                                  String columnName)

Estimate the average size of a string column based on the past segments of the table. For now, we return the average value.

Parameters:

columnName -

Returns:

estimated average string size

getEstimatedRowsToIndex

public int getEstimatedRowsToIndex()

getLatestSegmentMemoryConsumed

public long getLatestSegmentMemoryConsumed()

getSegmentStatsAt

public RealtimeSegmentStatsHistory.SegmentStats getSegmentStatsAt(int index)

toString

public String toString()

Overrides:

toString in class Object

deserialzeFrom

public static RealtimeSegmentStatsHistory deserialzeFrom(File inFile)
                                                  throws IOException,
                                                         ClassNotFoundException

Throws:

IOException

ClassNotFoundException