[GitHub] [systemds] kev-inn edited a comment on pull request #1047: [SYSTEMDS-2651] Add faster multiple federated workers startup

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kev-inn edited a comment on pull request #1047:
URL: https://github.com/apache/systemds/pull/1047#issuecomment-688257975


   > But the issue is that it is hard / impossible to debug the processes while it is possible when inside the same JVM using threads, and in that context if we really want to make it smart then we would need to change the system such that it does not produce these static variables and objects that potentially also lead to more bugs in other parts of the program.
   
   Yes, that is the one major downside. Intellij supports attaching to the debugger to process, but I am not sure if that operation can be automated. [`ThreadLocal`](https://docs.oracle.com/javase/8/docs/api/java/lang/ThreadLocal.html) would be another option for using threads, but I believe that would lead to performance loss, even though we only get debug improvements.


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