LuciferYang opened a new pull request #29689:
URL: https://github.com/apache/spark/pull/29689
### What changes were proposed in this pull request?
`--` method of `AttributeSet` behave differently under Scala 2.12 and 2.13
because `--` method of `LinkedHashSet` in Scala 2.13 can't maintains the
insertion order.
This pr use a Scala 2.12 based code to ensure `--` method of AttributeSet
have same behavior under Scala 2.12 and 2.13.
### Why are the changes needed?
The behavior of `AttributeSet` needs to be compatible with Scala 2.12 and
2.13
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Scala 2.12: Pass the Jenkins or GitHub Action
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