mkuchenbecker commented on code in PR #5691:
URL: https://github.com/apache/hadoop/pull/5691#discussion_r1207150754
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hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/NamenodeHeartbeatService.java:
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@@ -107,6 +110,15 @@ public class NamenodeHeartbeatService extends
PeriodicService {
/** URL scheme to use for JMX calls. */
private String scheme;
+ /** Frequency of updates to JMX report. */
+ private long updateJmxIntervalMs;
+ /** Timestamp of last attempt to update JMX report. */
+ private long lastJmxUpdateAttempt;
Review Comment:
Should we be getting a glob of FSNamesystem metrics as compared to querying
the specific metrics needed?
I.e. this queries `FSNamesystem*`, and not all those metrics are eneded or
used.
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