UserWarning: resource_tracker: There appear to be 2 leaked semaphore objects to clean up at shutdown 3

[xg1990]

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Describe the bug

The instance is killed with the reason OOMKilled.

Seems there is a memory leakage.

Steps To Reproduce

When run dbt build with multiple threads enabled, in a memory constrained environment (i.e. k8s, with limited memory) The instance will be killed with the reason OOMKilled

Expected behavior

dbt build should not require too much memory

Screenshots and log output

System information

The output of dbt --version:

The operating system you're using:

The output of python --version:

Additional context

Add any other context about the problem here.