findepi commented on code in PR #10691:
URL: https://github.com/apache/iceberg/pull/10691#discussion_r1677634825
##########
core/src/main/java/org/apache/iceberg/util/ParallelIterable.java:
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@@ -88,16 +92,26 @@ private ParallelIterator(
@Override
public void close() {
// close first, avoid new task submit
- this.closed = true;
+ this.closed.set(true);
+
+ try (Closer closer = Closer.create()) {
+ yieldedTasks.forEach(closer::register);
+ yieldedTasks.clear();
- // cancel background tasks
- for (Future<?> taskFuture : taskFutures) {
- if (taskFuture != null && !taskFuture.isDone()) {
- taskFuture.cancel(true);
+ // TODO close input iterables that were not started yet
Review Comment:
the existing code (in main branch) closes iterables, not the iterators
derived from them
so to me it makes sense to reliably close all iterables.
i can back out this TODO though, if this is preferred.
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