[ https://issues.apache.org/jira/browse/HDFS-17026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiaoqiao He resolved HDFS-17026. -------------------------------- Fix Version/s: 3.4.0 Hadoop Flags: Reviewed Resolution: Fixed > RBF: NamenodeHeartbeatService should update JMX report with configurable > frequency > ---------------------------------------------------------------------------------- > > Key: HDFS-17026 > URL: https://issues.apache.org/jira/browse/HDFS-17026 > Project: Hadoop HDFS > Issue Type: Improvement > Components: rbf > Reporter: Hector Sandoval Chaverri > Assignee: Hector Sandoval Chaverri > Priority: Major > Labels: pull-request-available > Fix For: 3.4.0 > > Attachments: HDFS-17026-branch-3.3.patch > > > TheĀ NamenodeHeartbeatService currently calls each of the Namenode's JMX > endpoint every time it wakes up (default value is every 5 seconds). > In a cluster with 40 routers, we have observed service degradation on some of > theĀ Namenodes, since the JMX request obtains Datanode status and blocks > other RPC requests. However, JMX report data doesn't seem to be used for > critical paths on the routers. > We should configure the NamenodeHeartbeatService so it updates the JMX > reports on a slower frequency than the Namenode states or to disable the > reports completely. > The class calls out the JMX request being optional even though there is no > implementation to turn it off: > {noformat} > // Read the stats from JMX (optional) > updateJMXParameters(webAddress, report);{noformat} -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org