szetszwo commented on code in PR #11294:
URL: https://github.com/apache/ozone/pull/11294#discussion_r4136627541
##########
hadoop-hdds/client/src/main/java/org/apache/hadoop/hdds/scm/XceiverClientShortCircuit.java:
##########
@@ -653,4 +624,35 @@ public boolean equals(Object obj) {
&& this.blockLocalId == that.blockLocalId;
}
}
+
+ static final class TimeoutScheduler {
+ private Timer timer;
+
+ synchronized void init(String prefix) {
+ Preconditions.assertNull(timer, "timer");
+ timer = new Timer(prefix + "-Timer");
+ }
+
+ synchronized void schedule(TimerTask task, int timeoutMs) {
+ if (timer == null) {
Review Comment:
Let's change it to requireNonNull.
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