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From "Jihoon Son (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-314) Make TaskScheduler be pluggable
Date Tue, 19 Nov 2013 07:31:21 GMT

    [ https://issues.apache.org/jira/browse/TAJO-314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13826278#comment-13826278
] 

Jihoon Son commented on TAJO-314:
---------------------------------

Or, we can consider adding an abstract newTaskSchedulerEvent() function to the AbstractTaskScheduler
class like this.
{code}
public abstract class AbstractTaskScheduler extends AbstractService
    implements EventHandler<TaskSchedulerEvent> {

  /**
   * Construct the service.
   *
   * @param name service name
   */
  public AbstractTaskScheduler(String name) {
    super(name);
  }

  public abstract void handleTaskRequestEvent(TaskRequestEvent event);
  public abstract TaskSchedulerEvent newTaskSchedulerEvent(EventType type, QueryUnitAttempt
queryUnitAttempt);
}
{code}

> Make TaskScheduler be pluggable
> -------------------------------
>
>                 Key: TAJO-314
>                 URL: https://issues.apache.org/jira/browse/TAJO-314
>             Project: Tajo
>          Issue Type: Improvement
>          Components: master
>            Reporter: Jihoon Son
>            Assignee: Jihoon Son
>             Fix For: 0.8-incubating
>
>         Attachments: TAJO-314.patch
>
>
> The task scheduler can be changed according to the task scheduling algorithm, the locality
policy of the storage, and so on.
> Thus, we need to improve the task scheduler interface to be pluggable.



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