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https://issues.apache.org/jira/browse/HBASE-15222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15167936#comment-15167936
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Ted Yu commented on HBASE-15222:
--------------------------------
The following test still fails:
{code}
testRangeCountMetrics(org.apache.hadoop.hbase.regionserver.TestRegionServerMetrics)
Time elapsed: 1.295 sec <<< FAILURE!
java.lang.AssertionError: Should get counter mutatetimerangecount01 but did not
at org.junit.Assert.fail(Assert.java:88)
at org.junit.Assert.assertTrue(Assert.java:41)
at org.junit.Assert.assertNotNull(Assert.java:712)
at
org.apache.hadoop.hbase.test.MetricsAssertHelperImpl.getCounter(MetricsAssertHelperImpl.java:203)
at
org.apache.hadoop.hbase.regionserver.TestRegionServerMetrics.testRangeCountMetrics(TestRegionServerMetrics.java:561)
{code}
> Use less contended classes for metrics
> --------------------------------------
>
> Key: HBASE-15222
> URL: https://issues.apache.org/jira/browse/HBASE-15222
> Project: HBase
> Issue Type: Bug
> Components: metrics
> Affects Versions: 2.0.0, 1.2.0, 1.3.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Priority: Critical
> Fix For: 2.0.0, 1.3.0
>
> Attachments: HBASE-15222-ADD-0.patch, HBASE-15222-v1.patch,
> HBASE-15222-v10.patch, HBASE-15222-v11.patch, HBASE-15222-v12.patch,
> HBASE-15222-v13.patch, HBASE-15222-v2.patch, HBASE-15222-v3.patch,
> HBASE-15222-v5.patch, HBASE-15222-v6.patch, HBASE-15222-v8.patch,
> HBASE-15222-v9.patch, HBASE-15222.patch
>
>
> Running the benchmarks now, but it looks like the results are pretty extreme.
> The locking in our histograms is pretty extreme.
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