wuyunfeng commented on pull request #5336:
URL: https://github.com/apache/incubator-doris/pull/5336#issuecomment-786450377
I just using `Java` describe the implementation which I would prefer:
First define a `NoOpLock`:
```
protected static final class NoOpLock implements Lock {
@Override
public void lock() {
}
@Override
public void lockInterruptibly() throws InterruptedException {
}
@Override
public boolean tryLock() {
return true;
}
@Override
public boolean tryLock(long time, TimeUnit unit) throws
InterruptedException {
return true;
}
@Override
public void unlock() {
}
@Override
public Condition newCondition() {
throw new UnsupportedOperationException("NoOpLock can't provide
a condition");
}
}
```
We just define a `private final Lock lock = new NoOpLock();`
If using `async` mode, let the lock using the real `Lock`, If not, we can
replace the `lock` with `NoOpLock`.
If we do this, the first code is more elegant, and second, we can avoid
excessive branch switching.
I think your approach is fine, would you like to think about my suggestion
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