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Posted to common-dev@hadoop.apache.org by "Amareshwari Sriramadasu (JIRA)" <ji...@apache.org> on 2008/04/18 14:40:21 UTC

[jira] Commented: (HADOOP-2181) Input Split details for maps should be logged

    [ https://issues.apache.org/jira/browse/HADOOP-2181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12590424#action_12590424 ] 

Amareshwari Sriramadasu commented on HADOOP-2181:
-------------------------------------------------

Here is the proposed design for logging Inputsplits: 

1. We can log input split details at the start of the job in initTasks().
2. Log them in Job history also, once for each tip.

Viewing split details on Web UI:
1. Input split details can be printed in a table in taskdetails.jsp whcih prints all the attempts of a tip.
2. Similarly, the split details are printed in a table on taskdetailshistory.jsp for viewing history.


> Input Split details for maps should be logged
> ---------------------------------------------
>
>                 Key: HADOOP-2181
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2181
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: lohit vijayarenu
>            Assignee: Amareshwari Sriramadasu
>            Priority: Minor
>             Fix For: 0.18.0
>
>
> It would be nice if Input split details are logged someplace. This might help debugging failed map tasks

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