LuciferYang commented on code in PR #43502:
URL: https://github.com/apache/spark/pull/43502#discussion_r1396674249
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common/kvstore/src/main/java/org/apache/spark/util/kvstore/LevelDBIterator.java:
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@@ -182,23 +193,34 @@ public boolean skip(long n) {
@Override
public synchronized void close() throws IOException {
- db.notifyIteratorClosed(this);
+ db.notifyIteratorClosed(it);
if (!closed) {
- it.close();
- closed = true;
- next = null;
+ try {
+ it.close();
+ } finally {
+ closed = true;
+ next = null;
+ cancelResourceClean();
+ }
}
}
/**
- * Because it's tricky to expose closeable iterators through many internal
APIs, especially
- * when Scala wrappers are used, this makes sure that, hopefully, the JNI
resources held by
- * the iterator will eventually be released.
+ * Prevent ResourceCleaner from trying to release resources after close.
*/
- @SuppressWarnings("deprecation")
- @Override
- protected void finalize() throws Throwable {
- db.closeIterator(this);
+ private void cancelResourceClean() {
+ this.resourceCleaner.setStartedToFalse();
+ this.cleanable.clean();
+ }
+
+ @VisibleForTesting
Review Comment:
this is used by `notifyIteratorClosed`, not `@VisibleForTesting` now
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