venkata91 commented on a change in pull request #24265: [SPARK-27338][Core] Fix
deadlock in UnsafeExternalSorter.SpillableIterator when locking both
UnsafeExternalSorter.SpillableIterator and TaskMemoryManager
URL: https://github.com/apache/spark/pull/24265#discussion_r271481914
##########
File path:
core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeExternalSorter.java
##########
@@ -573,19 +573,26 @@ public boolean hasNext() {
@Override
public void loadNext() throws IOException {
- synchronized (this) {
- loaded = true;
- if (nextUpstream != null) {
- // Just consumed the last record from in memory iterator
- if (lastPage != null) {
- freePage(lastPage);
- lastPage = null;
+ MemoryBlock pageToFree = null;
+ try {
+ synchronized (this) {
+ loaded = true;
+ if (nextUpstream != null) {
+ // Just consumed the last record from in memory iterator
+ if(lastPage != null) {
+ pageToFree = lastPage;
Review comment:
Sure @cloud-fan, will add and update the PR
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