rdblue commented on a change in pull request #25354: [SPARK-28612][SQL] Add
DataFrameWriterV2 API
URL: https://github.com/apache/spark/pull/25354#discussion_r316438488
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File path: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala
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@@ -3178,6 +3178,34 @@ class Dataset[T] private[sql](
new DataFrameWriter[T](this)
}
+ /**
+ * Create a write configuration builder for v2 sources.
+ *
+ * This builder is used to configure and execute write operations. For
example, to append to an
+ * existing table, run:
+ *
+ * {{{
+ * df.writeTo("catalog.db.table").append()
+ * }}}
+ *
+ * This can also be used to create or replace existing tables:
+ *
+ * {{{
+ * df.writeTo("catalog.db.table").partitionedBy($"col").createOrReplace()
+ * }}}
+ *
+ * @group basic
+ * @since 3.0.0
+ */
+ def writeTo(table: String): DataFrameWriterV2[T] = {
+ // TODO: streaming could be adapted to use this interface
+ if (isStreaming) {
+ logicalPlan.failAnalysis(
+ "'writeTo' can not be called on streaming Dataset/DataFrame")
Review comment:
I didn't include this because I'd rather not have the v2 API recommend using
the v1 API. That seems confusing to me.
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