Details
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Improvement
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Status: Resolved
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Major
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Resolution: Fixed
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3.4.0
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Reviewed
Description
In our prod environment, we try to collect RBF metrics every 15s through jmx_exporter. And we found that collection task often failed.
After tracing and found that the collection task is blocked at getNodeUsage() in RBFMetrics, because it will collection all datanode's usage from downstream nameservices. This is a very expensive and almost useless operation. Because in most scenarios, each NameSerivce contains almost the same DNs. We can get the data usage's from any one nameservices, not from RBF.
So I feel that RBF should supports disable getNodeUsage() in RBFMetrics.
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