Commit fa75db2
[SPARK-29026][SQL] Improve error message in
### What changes were proposed in this pull request?
- For trait without companion object constructor, currently the method to get constructor parameters `constructParams` in `ScalaReflection` will throw exception.
```
scala.ScalaReflectionException: <none> is not a term
at scala.reflect.api.Symbols$SymbolApi.asTerm(Symbols.scala:211)
at scala.reflect.api.Symbols$SymbolApi.asTerm$(Symbols.scala:211)
at scala.reflect.internal.Symbols$SymbolContextApiImpl.asTerm(Symbols.scala:106)
at org.apache.spark.sql.catalyst.ScalaReflection.getCompanionConstructor(ScalaReflection.scala:909)
at org.apache.spark.sql.catalyst.ScalaReflection.constructParams(ScalaReflection.scala:914)
at org.apache.spark.sql.catalyst.ScalaReflection.constructParams$(ScalaReflection.scala:912)
at org.apache.spark.sql.catalyst.ScalaReflection$.constructParams(ScalaReflection.scala:47)
at org.apache.spark.sql.catalyst.ScalaReflection.getConstructorParameters(ScalaReflection.scala:890)
at org.apache.spark.sql.catalyst.ScalaReflection.getConstructorParameters$(ScalaReflection.scala:886)
at org.apache.spark.sql.catalyst.ScalaReflection$.getConstructorParameters(ScalaReflection.scala:47)
```
- Instead this PR would throw exception:
```
Unable to find constructor for type [XXX]. This could happen if [XXX] is an interface or a trait without companion object constructor
UnsupportedOperationException:
```
In the normal usage of ExpressionEncoder, this can happen if the type is interface extending `scala.Product`. Also, since this is a protected method, this could have been other arbitrary types without constructor.
### Why are the changes needed?
- The error message `<none> is not a term` isn't helpful for users to understand the problem.
### Does this PR introduce any user-facing change?
- The exception would be thrown instead of runtime exception from the `scala.ScalaReflectionException`.
### How was this patch tested?
- Added a unit test to illustrate the `type` where expression encoder will fail and trigger the proposed error message.
Closes #25736 from mickjermsurawong-stripe/SPARK-29026.
Authored-by: Mick Jermsurawong <mickjermsurawong@stripe.com>
Signed-off-by: HyukjinKwon <gurwls223@apache.org>schemaFor in trait without companion object constructor1 parent 54d3f6e commit fa75db2
File tree
2 files changed
+34
-1
lines changed- sql/catalyst/src
- main/scala/org/apache/spark/sql/catalyst
- test/scala/org/apache/spark/sql/catalyst
2 files changed
+34
-1
lines changedLines changed: 12 additions & 1 deletion
| Original file line number | Diff line number | Diff line change | |
|---|---|---|---|
| |||
906 | 906 | | |
907 | 907 | | |
908 | 908 | | |
909 | | - | |
| 909 | + | |
| 910 | + | |
| 911 | + | |
| 912 | + | |
| 913 | + | |
| 914 | + | |
| 915 | + | |
| 916 | + | |
| 917 | + | |
| 918 | + | |
| 919 | + | |
| 920 | + | |
910 | 921 | | |
911 | 922 | | |
912 | 923 | | |
| |||
Lines changed: 22 additions & 0 deletions
| Original file line number | Diff line number | Diff line change | |
|---|---|---|---|
| |||
138 | 138 | | |
139 | 139 | | |
140 | 140 | | |
| 141 | + | |
| 142 | + | |
| 143 | + | |
| 144 | + | |
| 145 | + | |
| 146 | + | |
| 147 | + | |
| 148 | + | |
141 | 149 | | |
142 | 150 | | |
143 | 151 | | |
| |||
404 | 412 | | |
405 | 413 | | |
406 | 414 | | |
| 415 | + | |
| 416 | + | |
| 417 | + | |
| 418 | + | |
| 419 | + | |
| 420 | + | |
| 421 | + | |
| 422 | + | |
| 423 | + | |
| 424 | + | |
| 425 | + | |
| 426 | + | |
| 427 | + | |
| 428 | + | |
407 | 429 | | |
408 | 430 | | |
409 | 431 | | |
| |||
0 commit comments