panbingkun commented on code in PR #45776:
URL: https://github.com/apache/spark/pull/45776#discussion_r1545540426
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sql/core/src/test/scala/org/apache/spark/sql/test/DataFrameReaderWriterSuite.scala:
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@@ -625,15 +626,21 @@ class DataFrameReaderWriterSuite extends QueryTest with
SharedSparkSession with
spark.createDataset(data).write.mode(SaveMode.Overwrite).text(dir)
// Reader, without user specified schema
- testRead(spark.read.textFile().toDF(), Seq.empty, textSchema)
+ withTempDir { tmpDir =>
Review Comment:
@HyukjinKwon
This is a test case for `Empty Dataset`. When reading an empty directory,
you will get a `Empty Dataset`.
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