org.apache.flink.runtime.executiongraph

Class ExecutionSignature

java.lang.Object

org.apache.flink.runtime.executiongraph.ExecutionSignature

public final class ExecutionSignature
extends Object

An execution signature allows to uniquely identify a job vertex. The signature involves the name of the class to be invoked at runtime as well as a cryptographic hash of all the JAR files which are required to instantiate the class and run it. The execution is the basis for feedback learning as it enables the profiler to recognize particular parts of a job. Execution signature objects are immutable and, consequently, thread-safe.

This class is thread-safe.

Method Summary

Methods

Modifier and Type	Method and Description
static ExecutionSignature	createSignature(Class<? extends AbstractInvokable> invokableClass, JobID jobID) Calculates the execution signature from the given class name and job ID.
boolean	equals(Object obj)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

createSignature

public static ExecutionSignature createSignature(Class<? extends AbstractInvokable> invokableClass,
                                 JobID jobID)

Calculates the execution signature from the given class name and job ID.

Parameters:

invokableClass - the name of the class to contain the task program

jobID - the ID of the job

Returns:

the cryptographic signature of this vertex

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