【NullPointerException】StreamEventPool streamEventList is null?

[afreetgo]

Description: I used storm + siddhi to process monitoring data, but NullPointerException appeared.

Detailed debugging screenshots are as follows:

**Affected Siddhi Version:3.1.x,3.2.x

[mohanvive]

@afreetgo Above issue does not have enough context for us to debug. Can you please provide more context to the issue?

What is the Siddhi query that you have used? Please share a test case that we could use to reproduce the issue.

[afreetgo]

Preliminary judgment is that it may be due to the blockage of storm threads that lead to unsuccessful assignment. I am writing a separate test case to verify it.

[afreetgo]

storm-siddhi-test.zip

This test code can reproduce the problem, please modify FILEPATH in TestSpout, please help to see what caused it? How to solve it? Thank you very much.

[afreetgo]

Set breakpoints on line 48 of SiddhiBolt

[afreetgo]

Adding synchronized (inputHandler) can solve this problem.