Package org.apache.accumulo.tserver.logger

Class LogFileKey

java.lang.Object

org.apache.accumulo.tserver.logger.LogFileKey

All Implemented Interfaces:

Comparable<LogFileKey>, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<LogFileKey>

public class LogFileKey
extends Object
implements org.apache.hadoop.io.WritableComparable<LogFileKey>

Field Summary

Fields

Modifier and Type	Field	Description
LogEvents	event
String	filename
long	seq
KeyExtent	tablet
int	tabletId
String	tserverSession
static int	VERSION

Constructor Summary

Constructors

Constructor	Description
LogFileKey()

Method Summary

Modifier and Type	Method	Description
int	compareTo(LogFileKey o)
boolean	equals(Object obj)
static LogFileKey	fromKey(Key key)	Create LogFileKey from row.
int	hashCode()
void	readFields(DataInput in)
Key	toKey()	Converts LogFileKey to Key.
static Range	toRange(LogFileKey start, LogFileKey end)
String	toString()
void	write(DataOutput out)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

event

public LogEvents event

filename

public String filename

tablet

public KeyExtent tablet

seq

public long seq

tabletId

public int tabletId

VERSION

public static final int VERSION

See Also:

Constant Field Values

tserverSession

public String tserverSession

Constructor Detail

LogFileKey

public LogFileKey()

Method Detail

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException

compareTo

public int compareTo(LogFileKey o)

Specified by:

compareTo in interface Comparable<LogFileKey>

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

toKey

public Key toKey()
          throws IOException

Converts LogFileKey to Key. Creates a Key containing all of the LogFileKey fields. The fields are stored so the Key sorts maintaining the legacy sort order. The row of the Key is composed of 3 fields: EventNum + tabletID + seq. The EventNum is the byte returned by eventType(). The column family is always the event. The column qualifier is dependent of the type of event and could be empty.

     Key Schema:
     Row = EventNum + tabletID + seq
     Family = event
     Qualifier = tserverSession OR filename OR KeyExtent
 

Throws:

IOException

toRange

public static Range toRange(LogFileKey start,
                            LogFileKey end)

fromKey

public static LogFileKey fromKey(Key key)

Create LogFileKey from row. Follows schema defined by toKey()