multithreading - MDC 上下文仅被复制到 ForkJoinPool 的一个线程

Question

我想将 MDC 上下文传递给 ForkJoinPool 的线程，因为我需要在所有生成的线程日志中打印填充在 MDCContextMap 中的 requestId 以便更好地调试。我为此使用以下解决方案：如何将 MDC 与 ForkJoinPool 一起使用？.

我将游泳池用作：

final ForkJoinPool mdcPool = new MdcForkJoinPool(30);
mdcPool.submit(() -> ruleset.getOperationList().parallelStream().forEach(operation -> {
                log.info("Sample log line");

但从日志看来，MDC 上下文仅被复制到池的一个线程中。我还在 MdcForkJoinPool 的 submit 方法和 beforeExecution 方法中放置了一些日志。以下是 requestID 仅在一个线程（“ForkJoinPool-1-worker-25”）日志中打印的日志：

16 Oct 2018 15:05:32,570 [INFO] eb73e823-d154-11e8-871a-d138501061d6 (Coral Endpoint : 1) com.amazon.service.utils.MdcForkJoinPool: submit: Runnable
16 Oct 2018 15:05:32,571 [INFO]  (ForkJoinPool-1-worker-25) com.amazon.service.utils.MdcForkJoinPool: Before Execution: {RequestId=eb73e823-d154-11e8-871a-d138501061d6}
16 Oct 2018 15:05:32,571 [INFO]  (ForkJoinPool-1-worker-25) com.amazon.service.utils.MdcForkJoinPool: Before Execution: {}
16 Oct 2018 15:05:32,571 [INFO]  (ForkJoinPool-1-worker-25) com.amazon.service.utils.MdcForkJoinPool: Setting mDC: {}
16 Oct 2018 15:05:32,574 [INFO]  (ForkJoinPool-1-worker-4) com.amazon.service.activity.business.VariablesEvaluator: Sample log line
16 Oct 2018 15:05:32,574 [INFO]  (ForkJoinPool-1-worker-29) com.amazon.service.activity.business.VariablesEvaluator: Sample log line
16 Oct 2018 15:05:32,575 [INFO] eb73e823-d154-11e8-871a-d138501061d6 (ForkJoinPool-1-worker-25) com.amazon.service.activity.business.VariablesEvaluator: Sample log line
16 Oct 2018 15:05:32,576 [INFO]  (ForkJoinPool-1-worker-22) com.amazon.service.activity.business.VariablesEvaluator: Sample log line
16 Oct 2018 15:05:32,576 [INFO]  (ForkJoinPool-1-worker-4) com.amazon.service.activity.business.VariablesEvaluator: some Other logs
16 Oct 2018 15:05:32,576 [INFO] eb73e823-d154-11e8-871a-d138501061d6 (ForkJoinPool-1-worker-25) com.amazon.service.activity.business.VariablesEvaluator: some Other logs

我没有以正确的方式使用自定义 ForkJoinPool 吗？

标签： multithreadingmdcforkjoinpool