hsiang-c commented on code in PR #1667:
URL: https://github.com/apache/datafusion-comet/pull/1667#discussion_r2067903455
##########
spark/src/main/scala/org/apache/comet/DataTypeSupport.scala:
##########
@@ -33,20 +37,25 @@ trait DataTypeSupport {
* @return
* true if the datatype is supported
*/
- def isAdditionallySupported(dt: DataType): Boolean = false
+ def isAdditionallySupported(
+ dt: DataType,
+ name: String,
+ fallbackReasons: ListBuffer[String]): Boolean = false
- private def isGloballySupported(dt: DataType): Boolean = dt match {
- case ByteType | ShortType
- if CometSparkSessionExtensions.usingDataFusionParquetExec(SQLConf.get)
&&
- !CometConf.COMET_SCAN_ALLOW_INCOMPATIBLE.get() =>
- false
- case BooleanType | ByteType | ShortType | IntegerType | LongType |
FloatType | DoubleType |
- BinaryType | StringType | _: DecimalType | DateType | TimestampType =>
- true
- case t: DataType if t.typeName == "timestamp_ntz" =>
- true
- case _ => false
- }
+ private def isGloballySupported(dt: DataType, fallbackReasons:
ListBuffer[String]): Boolean =
+ dt match {
+ case ByteType | ShortType
+ if usingParquetExecWithIncompatTypes(
+ CometConf.COMET_NATIVE_SCAN_IMPL.get(SQLConf.get)) =>
+ fallbackReasons += s"${CometConf.COMET_SCAN_ALLOW_INCOMPATIBLE.key} is
false"
+ false
+ case BooleanType | ByteType | ShortType | IntegerType | LongType |
FloatType | DoubleType |
+ BinaryType | StringType | _: DecimalType | DateType | TimestampType
=>
+ true
+ case t: DataType if t.typeName == "timestamp_ntz" =>
+ true
+ case _ => false
Review Comment:
@andygrove I haven't figured out why, but adding it will produce a different
`SparkPlan`
Without the reason, I get
```
*(1) CometColumnarToRow
+- CometProject [firstName#10, lastName#11, age#12],
[personal_info#8.firstName AS firstName#10, personal_info#8.lastName AS
lastName#11, personal_info#8.age AS age#12]
+- CometNativeScan parquet [personal_info#8] Batched: true, DataFilters:
[], Format: CometParquet, Location: InMemoryFileIndex(1
paths)[file:/private/var/folders/d2/b93h6k7174ddqxltrxgb51040000gn/T/spark-8a...,
PartitionFilters: [], PushedFilters: [], ReadSchema:
struct<personal_info:struct<firstName:string,lastName:string,age:int>>
```
With the reason, I don't get a Comet plan hence unit tests fail:
```shell
*(1) Project [personal_info#8.firstName AS firstName#10,
personal_info#8.lastName AS lastName#11, personal_info#8.age AS age#12]
+- *(1) ColumnarToRow
+- FileScan parquet [personal_info#8] Batched: true, DataFilters: [],
Format: Parquet, Location: InMemoryFileIndex(1
paths)[file:/private/var/folders/d2/b93h6k7174ddqxltrxgb51040000gn/T/spark-b1...,
PartitionFilters: [], PushedFilters: [], ReadSchema:
struct<personal_info:struct<firstName:string,lastName:string,age:int>>
```
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