Karthik Palanisamy created HDFS-14400:
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Summary: Namenode ExpiredHeartbeats metric
Key: HDFS-14400
URL: https://issues.apache.org/jira/browse/HDFS-14400
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs
Affects Versions: 3.1.2
Reporter: Karthik Palanisamy
Assignee: Karthik Palanisamy
Noticed incorrect value in ExpiredHeartbeats metrics under namenode JMX.
We will increment ExpiredHeartbeats count when Datanode is dead but somehow we
missed to decrement when datanode is alive back.
{code}
{ "name" : "Hadoop:service=NameNode,name=FSNamesystem", "modelerType" :
"FSNamesystem", "tag.Context" : "dfs", "tag.TotalSyncTimes" : "7 ",
"tag.HAState" : "active", ... "ExpiredHeartbeats" : 2, ... }
{code}
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