cloud-fan commented on a change in pull request #29547:
URL: https://github.com/apache/spark/pull/29547#discussion_r477299169
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashedRelation.scala
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@@ -1102,36 +1096,33 @@ trait NullAwareHashedRelation extends HashedRelation
with Externalizable {
override def close(): Unit = {}
- override def writeExternal(out: ObjectOutput): Unit = {}
-
- override def readExternal(in: ObjectInput): Unit = {}
-
override def estimatedSize: Long = 0
}
/**
- * A special HashedRelation indicates it built from a empty
input:Iterator[InternalRow].
- * get & getValue will return null just like
- * empty LongHashedRelation or empty UnsafeHashedRelation does.
+ * A special HashedRelation indicates it built from a non-empty
input:Iterator[InternalRow],
Review comment:
ditto
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