zhengruifeng opened a new pull request, #44454:
URL: https://github.com/apache/spark/pull/44454
### What changes were proposed in this pull request?
Retain `plan_id` in `ResolveUnpivot` and `UnpivotCoercion`
### Why are the changes needed?
they drop the plan id add cause:
```
In [1]: df = spark.createDataFrame([(1, 2, 3, 4, 5, 6)], ["f1", "f2",
"label", "pred", "model_version", "ts"])
...: df.melt("model_version", ["label", "f2"], "f1",
"f2").groupby("f1").count().count()
23/12/22 11:37:52 WARN CheckAllocator: More than one
DefaultAllocationManager on classpath. Choosing first found
---------------------------------------------------------------------------
AnalysisException Traceback (most recent call last)
...
AnalysisException: When resolving 'f1, fail to find subplan with plan_id=2
in 'Aggregate ['f1], ['f1, count(1) AS count#125L]
+- Expand [[model_version#117L, label, label#115L], [model_version#117L, f2,
f2#114L]], [model_version#117L, f1#126, f2#127L]
+- Project [f1#101L AS f1#113L, f2#102L AS f2#114L, label#103L AS
label#115L, pred#104L AS pred#116L, model_version#105L AS model_version#117L,
ts#106L AS ts#118L]
+- LocalRelation [f1#101L, f2#102L, label#103L, pred#104L,
model_version#105L, ts#106L]
JVM stacktrace:
org.apache.spark.sql.AnalysisException
at
org.apache.spark.sql.catalyst.analysis.ColumnResolutionHelper.$anonfun$resolveUnresolvedAttributeByPlanId$3(ColumnResolutionHelper.scala:521)
at scala.Option.getOrElse(Option.scala:201)
at
org.apache.spark.sql.catalyst.analysis.ColumnResolutionHelper.$anonfun$resolveUnresolvedAttributeByPlanId$2(ColumnResolutionHelper.scala:516)
at scala.collection.mutable.HashMap.getOrElseUpdate(HashMap.scala:469)
at
org.apache.spark.sql.catalyst.analysis.ColumnResolutionHelper.resolveUnresolvedAttributeByPlanId(ColumnResolutionHelper.scala:511)
at
org.apache.spark.sql.catalyst.analysis.ColumnResolutionHelper.tryResolveColumnByPlanId(ColumnResolutionHelper.scala:494)
```
### Does this PR introduce _any_ user-facing change?
yes, bug fix
### How was this patch tested?
added ut
### Was this patch authored or co-authored using generative AI tooling?
no
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