Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/7405#discussion_r34624010
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/AbstractScalaRowIterator.scala
---
@@ -17,11 +17,14 @@
package org.apache.spark.sql
-import org.apache.spark.sql.catalyst.InternalRow
-
/**
* Shim to allow us to implement [[scala.Iterator]] in Java. Scala 2.11+
has an AbstractIterator
* class for this, but that class is `private[scala]` in 2.10. We need to
explicitly fix this to
- * `Row` in order to work around a spurious IntelliJ compiler error.
+ * `Row` in order to work around a spurious IntelliJ compiler error. This
cannot be an abstract
+ * class because that leads to compilation errors under Scala 2.11.
*/
-private[spark] abstract class AbstractScalaRowIterator extends
Iterator[InternalRow]
+private[spark] class AbstractScalaRowIterator[T] extends Iterator[T] {
--- End diff --
It's abstract in spirit.
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