Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/12157#discussion_r58730012
--- Diff: core/src/main/scala/org/apache/spark/rdd/HadoopRDD.scala ---
@@ -53,14 +53,22 @@ import org.apache.spark.util.{NextIterator,
SerializableConfiguration, ShutdownH
/**
* A Spark split class that wraps around a Hadoop InputSplit.
*/
-private[spark] class HadoopPartition(rddId: Int, idx: Int, s: InputSplit)
+private[spark] class HadoopPartition(rddId: Int, override val index: Int,
s: InputSplit)
extends Partition {
val inputSplit = new SerializableWritable[InputSplit](s)
- override def hashCode(): Int = 41 * (41 + rddId) + idx
+ override def hashCode(): Int = 41 * (41 + rddId) + index
- override val index: Int = idx
+ def canEqual(other: Any): Boolean = other.isInstanceOf[HadoopPartition]
+
+ override def equals(other: Any): Boolean = other match {
+ case that: HadoopPartition =>
+ super.equals(that) &&
+ (that canEqual this) &&
+ index == that.index
--- End diff --
Yes, but if changing the equality semantics is a different question, and it
is, then we shouldn't change it here. I don't think it's better to add dummy
implementations everywhere, since really, lacking `equals` is not wrong per se.
It's lacking `hashCode` when `equals` has been defined that's incorrect and
must be fixed/flagged.
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