anmolnar commented on code in PR #1961:
URL: https://github.com/apache/zookeeper/pull/1961#discussion_r1066055084
##########
zookeeper-server/src/main/java/org/apache/zookeeper/server/ZooKeeperServer.java:
##########
@@ -1151,6 +1213,9 @@ protected void setLocalSessionFlag(Request si) {
}
public void submitRequest(Request si) {
+ if (state == State.MAINTENANCE) {
+ throw new IllegalStateException("Zookeeper server is in
maintenance state");
+ }
Review Comment:
Yeah, be aware that you have to do `notifyAll()` after changing the state
back to RUNNING to notify the waiting threads. I'll add another comment at the
right place.
Additionally, I don't get this `check-wait(timeout)-check-wait(timeout)-...`
logic. It doesn't make sense to me, there's no additional fail-safe logic
inside the loop, why don't just `wait()`?
Instead, it takes back the lock in every second probably without any
benefit. I don't say we have to change that, I just don't understand.
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