garyli1019 commented on a change in pull request #2296:
URL: https://github.com/apache/hudi/pull/2296#discussion_r544993950



##########
File path: 
hudi-spark-datasource/hudi-spark/src/test/scala/org/apache/hudi/functional/TestCOWDataSource.scala
##########
@@ -320,4 +320,21 @@ class TestCOWDataSource extends HoodieClientTestBase {
 
     assertTrue(HoodieDataSourceHelpers.hasNewCommits(fs, basePath, "000"))
   }
+
+  @Test def testWithEmptyInput(): Unit = {
+    val inputDF1 = 
spark.read.json(spark.sparkContext.parallelize(Seq.empty[String], 1))
+    inputDF1.write.format("org.apache.hudi")
+      .options(commonOpts)
+      .option(DataSourceWriteOptions.OPERATION_OPT_KEY, 
DataSourceWriteOptions.INSERT_OPERATION_OPT_VAL)
+      .mode(SaveMode.Overwrite)
+      .save(basePath)
+    assertTrue(HoodieDataSourceHelpers.hasNewCommits(fs, basePath, "000"))

Review comment:
       I might be mistaken here. I see delta streamer and Flink could also make 
an empty commit. If empty commits are not considering as a bug, then this 
should be fine.
   cc: @bvaradar @vinothchandar can you guys make the call here?




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