hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5130) TaskTracker seems to hold onto the assigned task for a long while before launching it
Date Tue, 27 Jan 2009 08:28:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12667619#action_12667619
] 

Amareshwari Sriramadasu commented on HADOOP-5130:
-------------------------------------------------

I also saw this behavior many times. 
And there are cases that these tasks got killed for not reporting progress for 10 mins.

> TaskTracker seems to hold onto the assigned task for a long while before launching it
> -------------------------------------------------------------------------------------
>
>                 Key: HADOOP-5130
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5130
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.20.0
>            Reporter: Arun C Murthy
>            Priority: Critical
>
> I saw atleast a couple of instances where the task assigned to the TaskTracker is launched
several minutes after the receipt of the LaunchTaskAction:
> {noformat}
> 2009-01-27 13:55:53,402 INFO org.apache.hadoop.mapred.TaskTracker: LaunchTaskAction (registerTask):
attempt_200901270818_0006_m_000602_0
> 2009-01-27 13:55:55,129 INFO org.apache.hadoop.mapred.TaskTracker: Trying to launch :
attempt_200901270818_0006_m_000602_0
> 2009-01-27 13:55:55,129 INFO org.apache.hadoop.mapred.TaskTracker: In TaskLauncher, current
free slots : 2 and trying to launch attempt_200901270818_0006_m_000602_0
> 2009-01-27 14:04:17,744 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_200901270818_0006_m_176495965
given task: attempt_200901270818_0006_m_000602_0
> 2009-01-27 14:04:24,020 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0
1.0% 
> 2009-01-27 14:04:27,023 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0
1.0% 
> 2009-01-27 14:04:30,026 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0
1.0% 
> 2009-01-27 14:04:30,362 INFO org.apache.hadoop.mapred.TaskTracker: attempt_200901270818_0006_m_000602_0
1.0% 
> 2009-01-27 14:04:30,362 INFO org.apache.hadoop.mapred.TaskTracker: Task attempt_200901270818_0006_m_000602_0
is done.
> 2009-01-27 14:04:30,362 INFO org.apache.hadoop.mapred.TaskTracker: reported output size
for attempt_200901270818_0006_m_000602_0  was 0
> {noformat}

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message