[INLONG-5694][Manager] Fix the problem that gets the inlong group error

[fuweng11]

Prepare a Pull Request

• Fixes [Bug][Manager] Get the inlong group failed when the Init-Sort task execution failed #5694

Motivation

Make sure the group information of initsort failure can be viewed normally

Modifications

This ensures that no null pointer exception will be reported when getting the sort configuration information.

Verifying this change

(Please pick either of the following options)

• This change is a trivial rework/code cleanup without any test coverage.

• This change is already covered by existing tests, such as:
  (please describe tests)

• This change added tests and can be verified as follows:

Documentation

• Does this pull request introduce a new feature? (no)

[woofyzhao]

suggest searching for similar code snippets in case there are more like this

[leosanqing]

I find this article，They gave a solution, I tried it and it works: https://stackoverflow.com/questions/24630963/nullpointerexception-in-collectors-tomap-with-null-entry-values

[fuweng11]

I find this article，They gave a solution, I tried it and it works: https://stackoverflow.com/questions/24630963/nullpointerexception-in-collectors-tomap-with-null-entry-values

I don't think it's necessary to force the stream function to make the code hard to read.

[woofyzhao]

I find this article，They gave a solution, I tried it and it works: https://stackoverflow.com/questions/24630963/nullpointerexception-in-collectors-tomap-with-null-entry-values

I don't think it's necessary to force the stream function to make the code hard to read.

Agreed.

[leosanqing]

I find this article，They gave a solution, I tried it and it works: https://stackoverflow.com/questions/24630963/nullpointerexception-in-collectors-tomap-with-null-entry-values

I don't think it's necessary to force the stream function to make the code hard to read.

Yes, that article just tells why the NPE occurs, and then provides a workaround.
It's not mandatory, nor necessary, that kind of performance is bad