LuciferYang commented on code in PR #43502:
URL: https://github.com/apache/spark/pull/43502#discussion_r1395081107
##########
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();
Review Comment:
Yes, we have discussed this issue. The reason for not directly calling
`this.cleaner.clean()` is because the close process in `Cleaner` has added the
operation of `synchronized (this._db)`, which is slightly different from the
semantics of the original `close()` method. For specific discussions, please
refer to this thread:
https://github.com/apache/spark/pull/43502#discussion_r1372954706
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