A null pointer exception occurred, but I don't know why.

Question

A null pointer exception occurred, but I don't know why.

faf-xff opened this issue 5 years ago · comments

details:
2019-10-11 13:42:26,364 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - Job (ab76398582b1ffb8b58edb1a3bcd8dcd) switched from state RUNNING to FAILING.

java.lang.NullPointerException
at org.apache.flink.streaming.siddhi.router.AddRouteOperator.processElement(AddRouteOperator.java:88)
at org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:202)
at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:105)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:300)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711)
at java.lang.Thread.run(Thread.java:745)
2019-10-11 13:42:26,377 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - Source: rocketmq-source -> Filter -> Flat Map -> Map (1/1) (232afd5328528608f6531fed6b4f1179) switched from RUNNING to CANCELING.

2019-10-11 13:42:26,384 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - Map (1/1) (a16760312d3a947f709749bfc727a4d8) switched from RUNNING to CANCELING.

2019-10-11 13:42:26,385 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - CEP: Unnamed (0ed54446-5e10-4431-9b49-e612a20c0a4d) -> Map -> Flat Map -> Sink: Unnamed (1/1) (f945babb746258fd0ede36a4550efbe7) switched from RUNNING to CANCELING.

2019-10-11 13:42:26,399 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - Map (1/1) (a16760312d3a947f709749bfc727a4d8) switched from CANCELING to CANCELED.

2019-10-11 13:42:26,403 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - CEP: Unnamed (0ed54446-5e10-4431-9b49-e612a20c0a4d) -> Map -> Flat Map -> Sink: Unnamed (1/1) (f945babb746258fd0ede36a4550efbe7) switched from CANCELING to CANCELED.

2019-10-11 13:42:26,518 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - Source: rocketmq-source -> Filter -> Flat Map -> Map (1/1) (232afd5328528608f6531fed6b4f1179) switched from CANCELING to CANCELED.

Hao Chen · Answer 1 · Sat Oct 12 2019 14:04:01 GMT+0800 (China Standard Time)

@guanyufen123 Could you please share your application code?

消消乐 · Answer 2 · Mon Oct 14 2019 18:46:41 GMT+0800 (China Standard Time)

@guanyufen123 Could you please share your application code?

I think I know the reason. Thank you.

Hao Chen · Answer 3 · Tue Oct 15 2019 11:55:20 GMT+0800 (China Standard Time)

@guanyufen123 good to know that, please feel free to reach out to me if any more problems.

消消乐 · Answer 4 · Thu Oct 31 2019 14:43:59 GMT+0800 (China Standard Time)

@guanyufen123 good to know that, please feel free to reach out to me if any more problems.

ok,thanks

Felix Buck · Answer 5 · Wed Feb 10 2021 21:06:59 GMT+0800 (China Standard Time)

@guanyufen123 i have a similar stack trace. Can you maybe explain what your problem was?

Hao Chen · Answer 6 · Thu Feb 11 2021 04:18:05 GMT+0800 (China Standard Time)

@LuckyBoyDE What's your exception stack?

Felix Buck · Answer 7 · Thu Feb 11 2021 04:39:04 GMT+0800 (China Standard Time)

@LuckyBoyDE What's your exception stack?

Well, actually i am not running flink-siddhi at all but an own flink application. Sadly i am not permitted to share stack traces or code.
I just have a very similar stack trace i am trying to debug and thought knowing what caused it in this case might help me.

I am really sorry for hijacking this issue like this.

SMART2016 · Answer 8 · Mon Jun 14 2021 15:03:49 GMT+0800 (China Standard Time)

I am getting a similar issue while using control stream and has raised an issue separately , any help will be great:
#74

Madhuri Jain · Answer 9 · Wed Aug 23 2023 07:46:43 GMT+0800 (China Standard Time)

Hi, can someone share their solution for this stacktrace. We are running into similar issue. Thank you