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https://issues.apache.org/jira/browse/HBASE-10788?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13948242#comment-13948242
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Nick Dimiduk commented on HBASE-10788:
--------------------------------------
nit: this patch has some extra ws. Please clean it up on commit.
The thread name is not relevant in MR mode, and is redundant in your example
output above.
{noformat}
+ String metricName =
+ testName + "-Client-" + Thread.currentThread().getName() +
"-testRowTime";
{noformat}
This will inaccurately count any results from tests that respect --sampleRate.
{noformat}
+ long startTime = System.currentTimeMillis();
testRow(i);
+ latency.update(System.currentTimeMillis() - startTime);
{noformat}
> Add 99th percentile of latency in PE
> ------------------------------------
>
> Key: HBASE-10788
> URL: https://issues.apache.org/jira/browse/HBASE-10788
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.99.0
> Reporter: Liu Shaohui
> Assignee: Liu Shaohui
> Priority: Minor
> Attachments: HBASE-10788-trunk-v1.diff, HBASE-10788-trunk-v2.diff
>
>
> In production env, 99th percentile of latency is more important than the avg.
> The 99th percentile is helpful to measure the influence of GC, slow
> read/write of HDFS.
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