Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/18645#discussion_r128892216
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala
---
@@ -353,7 +353,7 @@ class DatasetSuite extends QueryTest with
SharedSQLContext {
test("foreachPartition") {
val ds = Seq(("a", 1), ("b", 2), ("c", 3)).toDS()
val acc = sparkContext.longAccumulator
- ds.foreachPartition(_.foreach(v => acc.add(v._2)))
+ ds.foreachPartition((it: Iterator[(String, Int)]) => it.foreach(v =>
acc.add(v._2)))
--- End diff --
Actually, no not the same issue as
https://issues.apache.org/jira/browse/SPARK-14643 but similar. Let me ask the
question there about how much source compatibility matters across Scala
versions, _for Java_.
I'm not in any event proposing to enable a 2.12 build anytime soon, just
see if we can get it closer without any implications for 2.11
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