cloud-fan commented on a change in pull request #29772:
URL: https://github.com/apache/spark/pull/29772#discussion_r489502836
##########
File path:
core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeExternalSorter.java
##########
@@ -516,32 +520,34 @@ public int getNumRecords() {
return numRecords;
}
+ @Override
+ public long getCurrentPageNumber() {
+ throw new UnsupportedOperationException();
+ }
+
public long spill() throws IOException {
synchronized (this) {
- if (!(upstream instanceof UnsafeInMemorySorter.SortedIterator &&
nextUpstream == null
- && numRecords > 0)) {
+ if (inMemSorter == null || numRecords <= 0) {
Review comment:
I haven't touched this file for a long time. Do you mind providing more
context? Does `inMemSorter == null || numRecords <= 0` mean this sorter has not
been inserted any records yet?
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