Freeman Fang created HADOOP-8446:
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Summary: make hadoop-core jar OSGi friendly
Key: HADOOP-8446
URL: https://issues.apache.org/jira/browse/HADOOP-8446
Project: Hadoop Common
Issue Type: Improvement
Components: build
Reporter: Freeman Fang
hadoop-core isn't OSGi friendly, so for those who wanna use it in OSGi
container, must wrap it with tool like bnd/maven-bundle-plugin. Apache
Servicemix always wrap 3rd party jars which isn't OSGi friendly, you can see
we've done it for lots of jars here[1], more specifically for several
hadoop-core versions[2]. Though we may keep this way doing it, the problem is
that we need do it for every new released version for 3rd party jars, more
importantly we need ensure other Apache projects communities are aware of we're
doing it.
In Servicemix we just wrap hadoop-core 1.0.3, issues to track it in Servicemix
is[3].
We hope Apache Hadoop can offer OSGi friendly jars, in most cases, it's should
be straightforward, as it just need add OSGi metadata headers to MANIFEST.MF,
this could be done easily with maven-bundle-plugin if build with maven.
There's also some other practice should be followed like different modules
shouldn't share same package(avoid split pacakge).
thanks
[1]http://repo2.maven.org/maven2/org/apache/servicemix/bundles
[2]http://repo2.maven.org/maven2/org/apache/servicemix/bundles/org.apache.servicemix.bundles.hadoop-core/
[3]https://issues.apache.org/jira/browse/SMX4-1147
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