lhotari commented on PR #25101:
URL: https://github.com/apache/pulsar/pull/25101#issuecomment-3685840545
The BadVersionExceptions seem to be another test flakiness problem in
ManagedCursorTest due to async ledger rollovers.
One possible solution is something like this:
```
public <T> T retry(ThrowingSupplier<T> supplier) {
for (int i = 0; i < 10; i++) {
if (i > 0) {
try {
log.info("Retrying after 100ms {}/{}", i, 10);
Thread.sleep(100);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
try {
return supplier.get();
} catch (Exception e) {
log.warn("Failed to execute supplier: {}", supplier, e);
}
}
throw new RuntimeException("Failed to execute supplier after 10
retries");
}
@FunctionalInterface
public interface ThrowingSupplier<T> {
T get() throws Exception;
}
```
This could be added to `BrokerTestUtil` class.
and then using it in the test classes (for example in
`testNumberOfEntriesWithReopen` method):
```
ledger = retry(() -> factory2.open("my_test_ledger", new
ManagedLedgerConfig().setMaxEntriesPerLedger(1)));
```
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