yikf commented on pull request #3042:
URL: https://github.com/apache/hadoop/pull/3042#issuecomment-846029637
For reviewer:
```
public Reference<? extends T> remove(long timeout)
throws IllegalArgumentException, InterruptedException
{
if (timeout < 0) {
throw new IllegalArgumentException("Negative timeout value");
}
synchronized (lock) {
Reference<? extends T> r = reallyPoll();
if (r != null) return r;
long start = (timeout == 0) ? 0 : System.nanoTime();
for (;;) {
lock.wait(timeout);
r = reallyPoll();
if (r != null) return r;
if (timeout != 0) {
long end = System.nanoTime();
timeout -= (end - start) / 1000_000;
if (timeout <= 0) return null;
start = end;
}
}
}
}
/**
* Removes the next reference object in this queue, blocking until one
* becomes available.
*
* @return A reference object, blocking until one becomes available
* @throws InterruptedException If the wait is interrupted
*/
public Reference<? extends T> remove() throws InterruptedException {
return remove(0);
}
```
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