adoroszlai opened a new pull request #1172: HDDS-1867. Invalid Prometheus metric name from JvmMetrics URL: https://github.com/apache/hadoop/pull/1172 ## What changes were proposed in this pull request? Fix `invalid metric type` error introduced by using JVM Metrics. Instead of adding replacement for space, replace all characters that cannot appear in Prometheus metric names with `_`. https://issues.apache.org/jira/browse/HDDS-1867 ## How was this patch tested? Verified in `ozoneperf` compose environment that `http://scm:9876/prom` endpoint is UP, and no `invalid metric type` error appears in the log. Added unit test.
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