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Posted to common-dev@hadoop.apache.org by "Chris Douglas (JIRA)" <ji...@apache.org> on 2007/10/13 03:12:50 UTC

[jira] Updated: (HADOOP-2048) DISTCP mapper should report progress more often

     [ https://issues.apache.org/jira/browse/HADOOP-2048?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris Douglas updated HADOOP-2048:
----------------------------------

    Attachment: 2048.patch

Report status at least every mapred.task.timeout / 8 milliseconds (default 1:15) or after every 10MB copied.

> DISTCP mapper should report progress more often
> -----------------------------------------------
>
>                 Key: HADOOP-2048
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2048
>             Project: Hadoop
>          Issue Type: Bug
>            Reporter: Runping Qi
>            Assignee: Chris Douglas
>         Attachments: 2048.patch
>
>
> When I ran DISTCP to copy files from one dfs to another, I noticed that some mappers got killed due to failing to report status for 606 seconds. 
> I noticed that the mappers try to make a progress report for every 32MB copied. A better way to ensure progress is to use a time interval since last report.

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