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From "Thomas Jungblut (JIRA)" <>
Subject [jira] [Updated] (HAMA-441) Logging to distinct files and Web Interface update
Date Thu, 22 Sep 2011 17:33:26 GMT


Thomas Jungblut updated HAMA-441:

    Attachment: HAMA-441.patch

Added a redirection of the STDOUT and ERR output to distinct log files.

It uses the system property of hamas log dir and puts the tasklogs into a subdirectory.
Layout is like following:
At first I added a subdirectory for the task-attempt id, but it is the same like the task
id currently, so I tagged this with a todo.

The web interface is a bit more work. We need to add a web server on the grooms and add the
servlet which tails the files. 
Then we have to add a job-report site where all tasks are listed.

Should we split this into smaller task? Or I guess nobody else want to do this?;D

> Logging to distinct files and Web Interface update
> --------------------------------------------------
>                 Key: HAMA-441
>                 URL:
>             Project: Hama
>          Issue Type: Improvement
>    Affects Versions: 0.3.0
>            Reporter: Thomas Jungblut
>         Attachments: HAMA-441.patch
> We should output the log of a task directly into the grooms local filesystem, instead
of redirecting the log to the groom.
> Additionally we need to provide a web interface capability to tail the log files. Hadoop
has similar features.

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