cloud-fan commented on a change in pull request #26164: [SPARK-21492][SQL] Fix
memory leak in SortMergeJoin
URL: https://github.com/apache/spark/pull/26164#discussion_r336532101
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/SortExec.scala
##########
@@ -181,4 +189,17 @@ case class SortExec(
|$sorterVariable.insertRow((UnsafeRow)${row.value});
""".stripMargin
}
+
+ /**
+ * In SortExec, we overwrites cleanupResources to close
UnsafeExternalRowSorter.
+ */
+ override protected[sql] def cleanupResources(): Unit = {
+ super.cleanupResources()
Review comment:
shall we release itself before releasing the children?
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