0ad382747d
### What changes were proposed in this pull request?
This's a follow-up of https://github.com/apache/spark/pull/34043. This PR proposes to only handle shuffle blocks in the separate thread pool and leave other blocks the same behavior as it is.
### Why are the changes needed?
To avoid any potential overhead.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Pass existing tests.
Closes #34076 from Ngone51/spark-36782-follow-up.
Authored-by: yi.wu <yi.wu@databricks.com>
Signed-off-by: Gengliang Wang <gengliang@apache.org>
(cherry picked from commit
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