LuciferYang commented on code in PR #43502:
URL: https://github.com/apache/spark/pull/43502#discussion_r1372643667
##########
common/kvstore/src/main/java/org/apache/spark/util/kvstore/LevelDBIterator.java:
##########
@@ -280,4 +285,24 @@ static int compare(byte[] a, byte[] b) {
return a.length - b.length;
}
+ private record ResourceCleaner(DBIterator dbIterator, LevelDB levelDB)
implements Runnable {
+ @Override
+ public void run() {
+ levelDB.getIteratorTracker().removeIf(ref -> {
+ LevelDBIterator<?> levelDBIterator = ref.get();
+ return levelDBIterator != null &&
dbIterator.equals(levelDBIterator.it);
+ });
+ synchronized (levelDB.getLevelDB()) {
+ DB _db = levelDB.getLevelDB().get();
+ if (_db == null) {
Review Comment:
What are the advantages compared to
```java
if (_db != null) {
try {
dbIterator.close();
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
```
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