dongjoon-hyun commented on pull request #29231:
URL: https://github.com/apache/spark/pull/29231#issuecomment-663868819
I tried to remove all constraints; 1) public `no-op constructor`, 2) public
constructor, 3) public class. But, it turns out that it cannot resolve this
issue.
```scala
-private[spark] class HighlyCompressedMapStatus private (
+class HighlyCompressedMapStatus(
private[this] var loc: BlockManagerId,
private[this] var numNonEmptyBlocks: Int,
private[this] var emptyBlocks: RoaringBitmap,
@@ -181,7 +181,7 @@ private[spark] class HighlyCompressedMapStatus private (
|| numNonEmptyBlocks == 0 || _mapTaskId > 0,
"Average size can only be zero for map stages that produced no output")
- protected def this() = this(null, -1, null, -1, null, -1) // For
deserialization only
+ def this() = this(null, -1, null, -1, null, -1) // For deserialization
only
override def location: BlockManagerId = loc
@@ -217,7 +217,7 @@ private[spark] class HighlyCompressedMapStatus private (
override def readExternal(in: ObjectInput): Unit = Utils.tryOrIOException
{
loc = BlockManagerId(in)
- numNonEmptyBlocks = -1 // SPARK-32436 Scala 2.13 doesn't initialize
this during deserialization
+ // numNonEmptyBlocks = -1 // SPARK-32436 Scala 2.13 doesn't initialize
this during deserialization
```
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