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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15222) Use less contended classes for metrics
Date Tue, 23 Feb 2016 22:57:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15222?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15159819#comment-15159819

Sean Busbey commented on HBASE-15222:

The problem is the burden that puts on the Yetus community. As an ASF community their pre-release
work is only supposed to be used by their community (which gets defined by their dev@ list).
Their PMC is charged with taking proactive steps to avoid folks from outside that list using
pre-release work. Right now I'm relying on a rather liberal reading of that rule to justify
myself and other HBase folks who work on our precommit builds having a "check if the fix for
X works."

This is a big rabbit hole of ASF internals stuff I'd rather not waste energy on. The number
of cases where this impacts us should be minimal in the long term. YETUS-280 is a temporary
growing pain exacerbated by the Yetus project still getting its feet on release cadence. It
has a known work around that literally any committer on the project can exercise.

> 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-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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