goiri commented on code in PR #5691:
URL: https://github.com/apache/hadoop/pull/5691#discussion_r1209486359
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/NamenodeHeartbeatService.java:
##########
@@ -482,17 +502,35 @@ private void
updateHAStatusParameters(NamenodeStatusReport report) {
}
}
+ /**
+ * Evaluates whether the JMX report should be refreshed by
+ * calling the Namenode, based on the following conditions:
+ * 1. JMX Updates must be enabled.
+ * 2. The last attempt to update JMX occurred before the
+ * configured interval (if any).
+ */
+ private boolean shouldUpdateJmx() {
+ return this.updateJmxIntervalMs >= 0
Review Comment:
Might be cleaner to read as:
```
if (this.updateJmxIntervalMs == 0)
return false;
}
return Time.monotonicNow() - this.lastJmxUpdateAttempt >
this.updateJmxIntervalMs
```
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/NamenodeHeartbeatService.java:
##########
@@ -482,17 +502,35 @@ private void
updateHAStatusParameters(NamenodeStatusReport report) {
}
}
+ /**
+ * Evaluates whether the JMX report should be refreshed by
+ * calling the Namenode, based on the following conditions:
+ * 1. JMX Updates must be enabled.
+ * 2. The last attempt to update JMX occurred before the
+ * configured interval (if any).
+ */
+ private boolean shouldUpdateJmx() {
+ return this.updateJmxIntervalMs >= 0
Review Comment:
Or < 0.
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