Github user jiangxb1987 commented on a diff in the pull request:
https://github.com/apache/spark/pull/20397#discussion_r164248501
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/sources/v2/reader/SupportsScanColumnarBatch.java
---
@@ -30,21 +30,21 @@
@InterfaceStability.Evolving
public interface SupportsScanColumnarBatch extends DataSourceV2Reader {
@Override
- default List<ReadTask<Row>> createReadTasks() {
+ default List<DataReaderFactory<Row>> createDataReaderFactories() {
--- End diff --
We shall create only one `DataReaderFactory`, and have that create multiple
data readers.
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