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https://issues.apache.org/jira/browse/HBASE-4050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Elliott Clark updated HBASE-4050:
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Attachment: HBASE-4050-0.patch
Here's a patch that add's hadoop compatibility shims. I needed something to
prototype and test with so I used my implementation of HBASE-6323 as an example.
hbase-hadoop-compat contains the factory and the interface. The factory uses
ResourceFinder from the geronimo project. It's much more flexible than
ServiceLoader (allows different locations easily and most importantly it allows
constructor arguments). I didn't want to add the whole geronimo project as a
dep so the code is copied in. I tried to give as much credit as I could. I
can go back to using ServiceLoader if people object to having
hbase-hadoop1-compat and hbase-hadoop2-compat add the actual implementation of
the class who's interface is defined in hbase-hadoop-compat. I don't have a
hbase-hadoop23-compat
Right now depending upon which profile is building the hbase-server module gets
one of the above as a dependency.
In addition when building assembly files only contain the
hbase-hadoop{1,2}-compat directory needed. It's possible to keep the old
assembly file the way it was and change the shell scripts to only load the one.
But I didn't get to that.
I tested it in place and locally after building tar.gz's on both
* hadoop 1.0.3
* hadoop 2.0.0-alpha
In place scripts still work though I'm not really sure of why or how. I need
to investigate that later.
> Update HBase metrics framework to metrics2 framework
> ----------------------------------------------------
>
> Key: HBASE-4050
> URL: https://issues.apache.org/jira/browse/HBASE-4050
> Project: HBase
> Issue Type: New Feature
> Components: metrics
> Affects Versions: 0.90.4
> Environment: Java 6
> Reporter: Eric Yang
> Assignee: Alex Baranau
> Priority: Critical
> Fix For: 0.96.0
>
> Attachments: 4050-metrics-v2.patch, 4050-metrics-v3.patch,
> HBASE-4050-0.patch, HBASE-4050.patch
>
>
> Metrics Framework has been marked deprecated in Hadoop 0.20.203+ and 0.22+,
> and it might get removed in future Hadoop release. Hence, HBase needs to
> revise the dependency of MetricsContext to use Metrics2 framework.
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