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Posted to dev@hama.apache.org by "Edward J. Yoon (JIRA)" <ji...@apache.org> on 2013/03/13 08:48:13 UTC
[jira] [Comment Edited] (HAMA-744) Errors on generated random data

    [ https://issues.apache.org/jira/browse/HAMA-744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13600890#comment-13600890 ] 

Edward J. Yoon edited comment on HAMA-744 at 3/13/13 7:48 AM:
--------------------------------------------------------------

Hmm, now I remember why I didn't use messaging system. 

The problem of use of messaging system is that every message must be sent with its partition ID to destination peer, because the number of tasks is not equal to the number of desired partitions. So, we need something like GraphJobMessage[1].

Another one thing is, as I mentioned before, we cannot inject partitioning phase as a first superstep if we can't specify the different number of tasks per supersteps.

1. http://svn.apache.org/repos/asf/hama/trunk/graph/src/main/java/org/apache/hama/graph/GraphJobMessage.java
                
      was (Author: udanax):
    Hmm, now I remember why I didn't use messaging system. 

The problem of use of messaging system is that every message must be sent with its partition ID to destination peer, because the number of tasks is not equal to the number of desired partitions. So, we need something like GraphJobMessage[1].

Another one thing is, as I question before, we cannot inject partitioning phase as a first superstep if we can't specify the different number of tasks per supersteps.

1. http://svn.apache.org/repos/asf/hama/trunk/graph/src/main/java/org/apache/hama/graph/GraphJobMessage.java
                  
> Errors on generated random data
> -------------------------------
>
>                 Key: HAMA-744
>                 URL: https://issues.apache.org/jira/browse/HAMA-744
>             Project: Hama
>          Issue Type: Bug
>    Affects Versions: 0.6.1
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>
> See http://markmail.org/message/vflxymwe3ao2bsr4
> Summary:
>  * Error occurs on generated data by sym-mat gen or fastgen 
>  * HAMA-704 requires sorted input.
> I'm not sure whether partitioned input data need to be Sorted by default. It should be configurable, or Should we change the VerticesInfo?

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