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https://issues.apache.org/jira/browse/HBASE-2888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12907096#action_12907096
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stack commented on HBASE-2888:
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Setting hbase.period in hadoop-metrics.properties doesn't seem to have an
effect; counts are off. Here's what I noticed digging in code:
'hadoop-metrics.properties' gets read up into a metrics attributes map but
nothing seems to be done w/ them subsequently. Reading up in hadoop, in
branch-0.20/src/core/org/apache/hadoop/metrics/package.html, it seems to imply
that we need to getAttribute and set them after we make a metrics Context; i.e.
in this case, call setPeriod in RegionServerMetrics, etc.?
More broadly, need to make sure settings in hadoop-metrics.properties take
effect when changed.
> Review all our metrics
> ----------------------
>
> Key: HBASE-2888
> URL: https://issues.apache.org/jira/browse/HBASE-2888
> Project: HBase
> Issue Type: Improvement
> Components: master
> Reporter: Jean-Daniel Cryans
> Fix For: 0.90.0
>
>
> HBase publishes a bunch of metrics, some useful some wasteful, that should be
> improved to deliver a better ops experience. Examples:
> - Block cache hit ratio converges at some point and stops moving
> - fsReadLatency goes down when compactions are running
> - storefileIndexSizeMB is the exact same number once a system is serving
> production load
> We could use new metrics too.
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