我在 Spark 上有一份长期运行的工作，运行了几个小时后失败，并出现以下错误。
18/10/09 03:22:15 ERROR YarnScheduler: Lost executor 547 on ip: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
18/10/09 03:22:15 WARN TaskSetManager: Lost task 750.0 in stage 19.0 (TID 1565492, ip, executor 547): ExecutorLostFailure (executor 547 exited caused by one of the running tasks) Reason: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
18/10/09 03:22:15 WARN TaskSetManager: Lost task 752.0 in stage 19.0 (TID 1565494, ip, executor 547): ExecutorLostFailure (executor 547 exited caused by one of the running tasks) Reason: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
18/10/09 03:22:15 WARN TaskSetManager: Lost task 751.0 in stage 19.0 (TID 1565493, ip, executor 547): ExecutorLostFailure (executor 547 exited caused by one of the running tasks) Reason: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
18/10/09 03:22:15 WARN TaskSetManager: Lost task 754.0 in stage 19.0 (TID 1565496, ip, executor 547): ExecutorLostFailure (executor 547 exited caused by one of the running tasks) Reason: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
18/10/09 03:22:15 WARN TaskSetManager: Lost task 753.0 in stage 19.0 (TID 1565495, ip, executor 547): ExecutorLostFailure (executor 547 exited caused by one of the running tasks) Reason: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
18/10/09 03:22:15 ERROR YarnScheduler: Lost executor 572 on ip: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
18/10/09 03:22:15 INFO DAGScheduler: Executor lost: 547 (epoch 45)
18/10/09 03:22:15 WARN TaskSetManager: Lost task 756.0 in stage 19.0 (TID 1565498, ip, executor 572): ExecutorLostFailure (executor 572 exited caused by one of the running tasks) Reason: Unable to create executor due to Unable to register with external shuffle server due to : java.util.concurrent.TimeoutException: Timeout waiting for task.
...
奇怪的是，我什至看不到日志的执行器列表上丢失的执行器。
如果有人可以帮助解决该问题，那就太好了。
答案 0 :(得分：1)
发生这种情况的因素很多，但摘要如下：
您的主节点无法回复特定的执行者，因此出现错误
由于以下原因，无法向外部随机播放服务器注册
您的主节点无法回复的原因可能有不同的原因。取决于代码的结构以及使用EMR时实例的大小。
要解决
希望这可以解决问题。