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https://issues.apache.org/jira/browse/HAMA-699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13804235#comment-13804235
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Martin Illecker commented on HAMA-699:
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A lot of io classes currently located in o.a.h.bsp have a dependency to BSP,
BSPJob, BSPPeer.
e.g., PartitioningRunner needs BSP, BSPPeer
If we would add PartitioningRunner and others to o.a.h.c.io (commons) we would
need a dependency from commons to core, which would lead to a cyclic one.
Therefore it's not possible to combine all io classes in commons without moving
BSP, BSPJob, BSPPeer from core to commons!
o.a.h.c.io.writable.* don't need a dependency to core therefore we can isolate
them in commons.
So the dependency issue is not between o.a.h.c.io.* and o.a.h.c.io.writable.*,
it's a cyclic dependency between commons and core module.
> Add commons module
> ------------------
>
> Key: HAMA-699
> URL: https://issues.apache.org/jira/browse/HAMA-699
> Project: Hama
> Issue Type: Improvement
> Reporter: Edward J. Yoon
> Assignee: Martin Illecker
> Fix For: 0.7.0
>
> Attachments: commons-module.txt, HAMA-699.patch
>
>
> As we disscussed, I'd like to add commons module.
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