[GitHub] [spark] MaxGekk commented on a change in pull request #27530: [SPARK-30780][SQL] Empty LocalTableScan should use RDD without partitions

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MaxGekk commented on a change in pull request #27530: [SPARK-30780][SQL] Empty LocalTableScan should use RDD without partitions
URL: https://github.com/apache/spark/pull/27530#discussion_r377544690
 
 

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 File path: sql/core/src/main/scala/org/apache/spark/sql/execution/LocalTableScanExec.scala
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 @@ -45,10 +45,14 @@ case class LocalTableScanExec(
     }
   }
 
-  private lazy val numParallelism: Int = math.min(math.max(unsafeRows.length, 1),
-    sqlContext.sparkContext.defaultParallelism)
-
-  private lazy val rdd = sqlContext.sparkContext.parallelize(unsafeRows, numParallelism)
+  @transient private lazy val rdd: RDD[InternalRow] = {
+    if (rows.isEmpty) {
 
 Review comment:
   Maybe, `unsafeRows.isEmpty`? Otherwise I have to look at the difference between `unsafeRows` and `rows`.

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