[FEATURE] [SPARK] add async fetch hdfs result

[echo567]

Code of Conduct

• [x] I agree to follow this project's Code of Conduct

Search before asking

• [x] I have searched in the issues and found no similar issues.

Describe the feature

During the Spark SQL execution phase, a thread pool is used when retrieving iterators to improve execution speed.

Motivation

Improve the speed of Spark SQL when retrieving results from HDFS

Describe the solution

Add a thread pool

Additional context

No response

Are you willing to submit PR?

• [x] Yes. I would be willing to submit a PR with guidance from the Kyuubi community to improve.
• [ ] No. I cannot submit a PR at this time.

[github-actions[bot]]

Hello @echo567, Thanks for finding the time to report the issue! We really appreciate the community's efforts to improve Apache Kyuubi.