Prevent buffer flush conflicts

[girishpanchal30]

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Changes proposed in this Pull Request:

Set the priority of shutdown action to higher to avoid the buffer flush conflicts.

Closes #1014

Other information:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes, as applicable?
• Have you successfully ran tests with your changes locally?

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