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Setup explanation:

I am using jmx prometheus agent, which starts with the VM as vm argument in HDFS setup.

Version: 0.20.0

There is a jmx http port displaying the Mbeans as JSON.

Problem:

When I view the /metrics port of prometheus agent, the values of the beans changes alternatively every time I refresh.

The first time is shows diskused 68Gb, next time it's 140G ... 68 -> 140 -> 68... so on.

LiveServersCount(dn) goes from 3 to 5 then to 3.

But in jmx http json port, it's consistent: 140GB.

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