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https://issues.apache.org/jira/browse/HAMA-376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019238#comment-13019238
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ChiaHung Lin commented on HAMA-376:
-----------------------------------
I will look into the miniBSPCluster issue in Eclipse.
With other examples e.g. PiEstimator will also cause the NullPointerException
at GroomServer, which stems from unabling to unjar the localized file.
Basically it looks like at the client side, the class loader retrieved
(sun.misc.Launcher$AppClassLoader) by e.g. PiEstimator is changed and different
from what is set
(Thread.currentThread().setContextClassLoader(java.net.URLClassLoader)) in
RunJar.
Sicne the missing jar is not the issue caused by refactored code, a temporary
solution can be done by simply copying example jar from the build folder to
hama home.
> Refactor BSPMaster and GroomServer to allow rpc methods reuse
> -------------------------------------------------------------
>
> Key: HAMA-376
> URL: https://issues.apache.org/jira/browse/HAMA-376
> Project: Hama
> Issue Type: Improvement
> Components: bsp
> Affects Versions: 0.3.0
> Environment: Debian squeeze/sid, java 1.6.0_22, Hama revision 1090950
> Reporter: ChiaHung Lin
> Assignee: ChiaHung Lin
> Labels: patch
> Fix For: 0.3.0
>
> Attachments: HAMA-376.patch, HAMA-376.patch
>
>
> The current Hama BSPMaster and GroomServer make use of dispatch() and
> report() function for communication. But the directives passed in is
> composite, which is a bit difficult to customize new directives for future
> use. The refactored version allows to pass customized directives by extending
> Directive class; and the customized directive will be processed with
> corresponded handler. Also, directives are put into queue, so the rpc method
> e.g. dispatch() do not need to go through the whole method until the
> execution is finished.
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