org.apache.tez.dag.records

Class TezTaskID

java.lang.Object

org.apache.tez.dag.records.TezID

org.apache.tez.dag.records.TezTaskID

All Implemented Interfaces:

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

@InterfaceAudience.Public
 @InterfaceStability.Stable
public class TezTaskID
extends TezID

TaskID represents the immutable and unique identifier for a Tez Task. Each TaskID encompasses multiple attempts made to execute the Tez Task, each of which are uniquely identified by their TezTaskAttemptID.

See Also:

TezTaskAttemptID

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.tez.dag.records.TezID

TezID.TezIDCache<T>

Field Summary

Fields

Modifier and Type	Field and Description
static String	TASK

Fields inherited from class org.apache.tez.dag.records.TezID

id, SEPARATOR

Method Summary

Modifier and Type	Method and Description
protected StringBuilder	appendTo(StringBuilder builder) Add the unique string to the given builder.
static void	clearCache()
int	compareTo(TezID o) Compare TaskInProgressIds by first jobIds, then by tip numbers and type.
boolean	equals(Object o)
static TezTaskID	fromString(String taskIdStr)
int	getHashCode(boolean makePositive)
static TezTaskID	getInstance(TezVertexID vertexID, int id) Constructs a TezTaskID object from given TezVertexID.
int	getSerializingHash()
TezVertexID	getVertexID() Returns the TezVertexID object that this task belongs to
int	hashCode()
void	readFields(DataInput in)
static TezTaskID	readTezTaskID(DataInput in)
String	toString()
void	write(DataOutput out)

Methods inherited from class org.apache.tez.dag.records.TezID

getId, readID

Methods inherited from class java.lang.Object

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

Field Detail

TASK

public static final String TASK

See Also:

Constant Field Values

Method Detail

getInstance

public static TezTaskID getInstance(TezVertexID vertexID,
                                    int id)

Constructs a TezTaskID object from given TezVertexID.

Parameters:

vertexID - the vertexID object for this TezTaskID

id - the tip number

clearCache

@InterfaceAudience.Private
public static void clearCache()

getSerializingHash

public int getSerializingHash()

getVertexID

public TezVertexID getVertexID()

Returns the TezVertexID object that this task belongs to

equals

public boolean equals(Object o)

Overrides:

equals in class TezID

compareTo

public int compareTo(TezID o)

Compare TaskInProgressIds by first jobIds, then by tip numbers and type.

Specified by:

compareTo in interface Comparable<TezID>

Overrides:

compareTo in class TezID

toString

public String toString()

Overrides:

toString in class TezID

appendTo

protected StringBuilder appendTo(StringBuilder builder)

Add the unique string to the given builder.

Parameters:

builder - the builder to append to

Returns:

the builder that was passed in

hashCode

public int hashCode()

Overrides:

hashCode in class TezID

getHashCode

public int getHashCode(boolean makePositive)

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

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

Overrides:

readFields in class TezID

Throws:

IOException

readTezTaskID

public static TezTaskID readTezTaskID(DataInput in)
                               throws IOException

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Specified by:

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

Overrides:

write in class TezID

Throws:

IOException

fromString

public static TezTaskID fromString(String taskIdStr)