sarutak opened a new pull request #34357:
URL: https://github.com/apache/spark/pull/34357
### What changes were proposed in this pull request?
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This PR fixes an issue that the R test of FPGrowthModel fails with Scala
2.13.
Similar to the issue filed in SPARK-37059 (#34330), the R test of
FPGrowthModel assumes that the result records returned by
`FPGrowthModel.freqItemsets` are sorted by a certain kind of order but it's
wrong.
As a result, the test fails with Scala 2.13.
```
══ Failed
══════════════════════════════════════════════════════════════════════
── 1. Failure (test_mllib_fpm.R:42:3): spark.fpGrowth
──────────────────────────
`expected_itemsets` not equivalent to `itemsets`.
Component “items”: Component 1: Component 1: 1 string mismatch
Component “items”: Component 2: Length mismatch: comparison on first 1
components
Component “items”: Component 2: Component 1: 1 string mismatch
Component “items”: Component 3: Length mismatch: comparison on first 1
components
Component “items”: Component 4: Length mismatch: comparison on first 1
components
Component “items”: Component 4: Component 1: 1 string mismatch
Component “items”: Component 5: Length mismatch: comparison on first 1
components
Component “items”: Component 5: Component 1: 1 string mismatch
Component “freq”: Mean relative difference: 0.5454545
```
### Why are the changes needed?
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For test stability.
### Does this PR introduce _any_ user-facing change?
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No.
### How was this patch tested?
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All the R tests passed on GA with a modified GA config to run with Scala
2.13 (set `scala2.13` to the `SPARK_PROFILE` environment variable).
https://github.com/sarutak/spark/runs/3964081433?check_suite_focus=true#step:7:380
Test for Scala 2.12 should be done on the regular GA.
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