[IGNITE-12044] [IEP-35] JmxExporterSpi displays histogram values incorrectly

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8
• Labels: IEP-35
• Ignite Flags: Docs Required
• Assignee: Nikolay Izhikov
• Reporter: Andrey N. Gura
• Created: 05/Aug/19 16:45
• Updated: 17/Mar/20 11:48
• Resolved: 20/Sep/19 05:24

Description

JmxExporterSpi exposes histogram values incorrectly. It looks like:

durationHistogram                long[5]

I think exporter should register attribute for each histogram bucket. Something like this:

durationHistogram.10                 0
durationHistogram.50                 0
durationHistogram.100                0
durationHistogram.250                0
durationHistogram.500                0

Issue Links

• causes: IGNITE-12767 MetricRegistryMBean is not thread safe
• causes: IGNITE-12768 MetricRegistryMBean doesn't show histogram values in case when histogram name contains underscore character
• causes: IGNITE-12769 MetricRegistryMBean and OpenCensusExporterSpi have memory leak
• links to: GitHub Pull Request #6882