Metrics with specific suffixes are renamed or not exported at all

[siegfriedweber]

Affected Stackable version

24.7.0, 24.11.0

Affected Apache HDFS version

3.3.4, 3.3.6

Current and expected behavior

For instance, the suffix _created of the metric hadoop_namenode_files_created is removed and the metric is named now hadoop_namenode_files. The suffix _total of the metric hadoop_namenode_files_total is also removed but as the metric hadoop_namenode_files already exists, it is discarded.

Possible solution

Update the JMX exporter rules to match the used JMX exporter version.

Additional context

The JMX exporter 1.0.1+ conforms with OpenMetrics (https://github.com/prometheus/jmx_exporter/releases/tag/1.0.1) and removes reserved suffixes.

Environment

No response

Would you like to work on fixing this bug?

yes

Tasks

• fix(hadoop): Fix the JMX exporter configuration docker-images#962
• Test metrics in the smoke test #635

[siegfriedweber]

Release Notes

Bugfixes

• HDFS: Metrics suffixed with _total, e.g. hadoop_namenode_files_total, are emitted again. Metrics originally suffixed with _created and _info are now suffixed with _created_ and _info_ to be OpenMetrics compliant.

[lfrancke]

Is this going to be in 24.11.1?