Github user srowen commented on a diff in the pull request: https://github.com/apache/spark/pull/14693#discussion_r75259542 --- Diff: core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeExternalSorter.java --- @@ -522,7 +522,7 @@ public long spill() throws IOException { // is accessing the current record. We free this page in that caller's next loadNext() // call. for (MemoryBlock page : allocatedPages) { - if (!loaded || page.getBaseObject() != upstream.getBaseObject()) { + if (!loaded || page.pageNumber != ((UnsafeInMemorySorter.SortedIterator)upstream).getCurrentPageNumber()) { --- End diff -- Can you not just reference `inMemIterator` here? no cast needed/
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