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From "Edward J. Yoon (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HAMA-704) Optimization of memory usage during message processing
Date Tue, 05 Feb 2013 11:37:12 GMT

    [ https://issues.apache.org/jira/browse/HAMA-704?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13571239#comment-13571239
] 

Edward J. Yoon edited comment on HAMA-704 at 2/5/13 11:35 AM:
--------------------------------------------------------------

Comparing was the reason of slow performance. Below will improve the performance.

{code}
  @Override
  public int compareTo(GraphJobMessage that) {
    if (this.flag != that.flag) {
      return (this.flag < that.flag) ? -1 : 1;
    } else {
      if (this.isVertexMessage()) {
        return this.getVertexId().toString()
            .compareTo(that.getVertexId().toString());
      } else {
        return 0;
      }
    }
  }
{code}
                
      was (Author: udanax):
    Comparing was the reason of slow performance.

{code}
  @Override
  public int compareTo(GraphJobMessage that) {
    if (this.flag != that.flag) {
      return (this.flag < that.flag) ? -1 : 1;
    } else {
      if (this.isVertexMessage()) {
        return this.getVertexId().toString()
            .compareTo(that.getVertexId().toString());
      } else {
        return 0;
      }
    }
  }
{code}
                  
> Optimization of memory usage during message processing
> ------------------------------------------------------
>
>                 Key: HAMA-704
>                 URL: https://issues.apache.org/jira/browse/HAMA-704
>             Project: Hama
>          Issue Type: Improvement
>          Components: graph
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>            Priority: Critical
>             Fix For: 0.6.1
>
>         Attachments: mytest.patch, patch.txt, removeMsgMap.patch
>
>
> <vertex, message> map seems consume a lot of memory. We should figure out an efficient
way to reduce memory.

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