ignite GridJobWorker 执行分析

类所在位置 org.apache.ignite.internal.processors.job.GridJobWorker

执行入口

    /**
     * Executes the job.
     */
    public void execute() {
        execute0(false);
    }

执行的核心函数

res = U.wrapThreadLoader(dep.classLoader(), new Callable<Object>() {
                        @Nullable @Override public Object call() {
                            try {
                                if (internal && ctx.config().isPeerClassLoadingEnabled())
                                    ctx.job().internal(true);

                                return job.execute();
                            }
                            finally {
                                if (internal && ctx.config().isPeerClassLoadingEnabled())
                                    ctx.job().internal(false);
                            }
                        }
                    });

执行完成后,返回结果 res , 在finally 函数体中 执行 finishJob(res, ex, sndRes);

然后序列化结果 resBytes = U.marshal(marsh, res);

byte[] resBytes = null; //结果
byte[] exBytes = null; //异常
byte[] attrBytes = null; //属性

将结果发送给对应的node

                    if (ses.isFullSupport()) {
                                // Send response to designated job topic.
                                // Always go through communication to preserve order,
                                // if attributes are enabled.
                                ctx.io().sendOrderedMessage(
                                    sndNode,
                                    taskTopic,
                                    jobRes,
                                    internal ? MANAGEMENT_POOL : SYSTEM_POOL,
                                    timeout,
                                    false);
                            }
                            else if (ctx.localNodeId().equals(sndNode.id()))
                                ctx.task().processJobExecuteResponse(ctx.localNodeId(), jobRes);
                            else
                                // Send response to common topic as unordered message.
                                ctx.io().sendToGridTopic(sndNode, TOPIC_TASK, jobRes, internal ? MANAGEMENT_POOL : SYSTEM_POOL);