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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5165) getSetupAndCleanupTasks should return multiple tasks in a heartbeat
Date Mon, 16 Feb 2009 03:44:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12673785#action_12673785

Amareshwari Sriramadasu commented on HADOOP-5165:

For testing multiple setup tasks, I tested on it single node, suspended the TaskTracker and
submitted 2 jobs simultaneously sothat both of will get initialized and will wait for setup
tasks to be launched. And verified both the setup tasks are launched on TaskTracker in one

Since gridmix has multiple simultaneous jobs, ran gridmix and verified from the logs that
multiple job setup tasks and job cleanup tasks are given to tracker in single heartbeat.
Ran MRReliability test and Verified from logs multiple task cleanup tasks are assigned in
single heartbeat.

> getSetupAndCleanupTasks should return multiple tasks in a heartbeat
> -------------------------------------------------------------------
>                 Key: HADOOP-5165
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5165
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.20.0, 0.21.0
>         Attachments: patch-5165-1.txt, patch-5165.txt
> getSetupAndCleanupTasks in JobTracker returns one task per heartbeat. With HADOOP-3136,
schedulers give multiple tasks  per heartbeat, getSetupAndCleanupTasks should also give multiple
tasks per heartbeat.

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