felixcheung commented on a change in pull request #24269: [SPARK-27341][CORE]
fix a deadlock between TaskMemoryManager and UnsafeExternalSorter
URL: https://github.com/apache/spark/pull/24269#discussion_r271150191
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File path:
core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeExternalSorter.java
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@@ -573,19 +573,28 @@ public boolean hasNext() {
@Override
public void loadNext() throws IOException {
- synchronized (this) {
Review comment:
is it possible lastPage != null on line 550 above when it is set?
https://github.com/apache/spark/pull/24269/files#diff-027299fb14327ddcaba457f81ecff32cR550
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