[HADOOP-16495] Fix invalid metric types in PrometheusMetricsSink

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3.0
• Component/s: metrics
• Target Version/s: 3.3.0
• Assignee: Akira Ajisaka
• Reporter: Akira Ajisaka
• Created: 07/Aug/19 06:16
• Updated: 14/Aug/19 04:12
• Resolved: 14/Aug/19 03:25

Description

There are some scraping error when using '/prom' endpoint:

• invalid metric type "_young _generation counter"
• invalid metric type "_old _generation counter"
• invalid metric type "apache.hadoop.hdfs.server.datanode.fsdataset.impl._fs_dataset_impl_dfs_used gauge"

Issue Links

• is broken by: HADOOP-16398 Exports Hadoop metrics to Prometheus
• links to: GitHub Pull Request #1244