org.apache.flink.runtime.util

Class ExecutorThreadFactory

java.lang.Object

org.apache.flink.runtime.util.ExecutorThreadFactory

All Implemented Interfaces:

ThreadFactory

public class ExecutorThreadFactory
extends Object
implements ThreadFactory

A thread factory intended for use by critical thread pools. Critical thread pools here mean thread pools that support Flink's core coordination and processing work, and which must not simply cause unnoticed errors.

The thread factory can be given an Thread.UncaughtExceptionHandler for the threads. If no handler is explicitly given, the default handler for uncaught exceptions will log the exceptions and kill the process afterwards. That guarantees that critical exceptions are not accidentally lost and leave the system running in an inconsistent state.

Threads created by this factory are all called '(pool-name)-thread-n', where (pool-name) is configurable, and n is an incrementing number.

All threads created by this factory are daemon threads and have the default (normal) priority.

Constructor Summary

Constructors

Constructor and Description
ExecutorThreadFactory() Creates a new thread factory using the default thread pool name ('flink-executor-pool') and the default uncaught exception handler (log exception and kill process).
ExecutorThreadFactory(String poolName) Creates a new thread factory using the given thread pool name and the default uncaught exception handler (log exception and kill process).
ExecutorThreadFactory(String poolName, Thread.UncaughtExceptionHandler exceptionHandler) Creates a new thread factory using the given thread pool name and the given uncaught exception handler.

Method Summary

Modifier and Type	Method and Description
Thread	newThread(Runnable runnable)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExecutorThreadFactory

public ExecutorThreadFactory()

Creates a new thread factory using the default thread pool name ('flink-executor-pool') and the default uncaught exception handler (log exception and kill process).

ExecutorThreadFactory

public ExecutorThreadFactory(String poolName)

Creates a new thread factory using the given thread pool name and the default uncaught exception handler (log exception and kill process).

Parameters:

poolName - The pool name, used as the threads' name prefix

ExecutorThreadFactory

public ExecutorThreadFactory(String poolName,
                             Thread.UncaughtExceptionHandler exceptionHandler)

Creates a new thread factory using the given thread pool name and the given uncaught exception handler.

Parameters:

poolName - The pool name, used as the threads' name prefix

exceptionHandler - The uncaught exception handler for the threads

Method Detail

newThread

public Thread newThread(Runnable runnable)

Specified by:

newThread in interface ThreadFactory