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From "Vincent Poon (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-18060) Backport to branch-1 HBASE-9774 HBase native metrics and metric collection for coprocessors
Date Fri, 19 May 2017 18:25:04 GMT

     [ https://issues.apache.org/jira/browse/HBASE-18060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vincent Poon updated HBASE-18060:
---------------------------------
    Attachment: HBASE-18060.branch-1.v2.patch
                HBASE-18060.branch-1.3.v2.patch

Added the missing license

The @author tag warning is from copying in LongAdder / Striped64 , should we remove it ?

javac warnings are also from copying in Striped64, which uses Unsafe

> Backport to branch-1 HBASE-9774 HBase native metrics and metric collection for coprocessors
> -------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18060
>                 URL: https://issues.apache.org/jira/browse/HBASE-18060
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 1.4.0, 1.3.2, 1.5.0
>            Reporter: Vincent Poon
>            Assignee: Vincent Poon
>         Attachments: HBASE-18060.branch-1.3.v1.patch, HBASE-18060.branch-1.3.v2.patch,
HBASE-18060.branch-1.v1.patch, HBASE-18060.branch-1.v2.patch
>
>
> I'd like to explore backporting HBASE-9774 to branch-1, as the ability for coprocessors
to report custom metrics through HBase is useful for us, and if we have coprocessors use the
native API, a re-write won't be necessary after an upgrade to 2.0.
> The main issues I see so far are:
> - the usage of Java 8 language features.  Seems we can work around this as most of it
is syntactic sugar.  Will need to find a backport for LongAdder
> - dropwizard 3.1.2 in Master.  branch-1 is still on yammer metrics 2.2.  Not sure if
these can coexist just for this feature



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