Apache flink Flink作业以“失败”；检查点协调员正在暂停。”；

我做了一份flink的工作，18小时后就失败了。失败消息：检查点协调器正在挂起

检查点屏幕截图：

工作概述屏幕截图：

以下是作业管理器日志：

2020-10-10 13:53:10,636 INFO  org.apache.flink.runtime.executiongraph.ExecutionGraph        - Source: kafkaSource -> Timestamps/Watermarks -> Process (1/1) (c38419ece8208c1ef2948087f2b84dd0) switched from RUNNING to FAILED.
java.lang.Exception: Could not perform checkpoint 3265 for operator Source: kafkaSource -> Timestamps/Watermarks -> Process (1/1).
    at org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpoint(StreamTask.java:785)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$triggerCheckpointAsync$3(StreamTask.java:760)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.run(StreamTaskActionExecutor.java:87)
    at org.apache.flink.streaming.runtime.tasks.mailbox.Mail.run(Mail.java:78)
    at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:261)
    at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:186)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:485)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:469)
    at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:708)
    at org.apache.flink.runtime.taskmanager.Task.run(Task.java:533)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
    at org.apache.flink.streaming.runtime.tasks.StreamTask$CheckpointingOperation.executeCheckpointing(StreamTask.java:1394)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.checkpointState(StreamTask.java:974)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$performCheckpoint$5(StreamTask.java:870)
    at org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:94)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.performCheckpoint(StreamTask.java:843)
    at org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpoint(StreamTask.java:776)
    ... 11 more

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我不知道是什么导致了这个问题。

您在日志中看到了什么？作业管理器和任务管理器日志都可能有有价值的线索。