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From "Ari Rabkin (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CHUKWA-430) Narrow down input for FSM mapreduce job
Date Mon, 14 Dec 2009 22:47:18 GMT

    [ https://issues.apache.org/jira/browse/CHUKWA-430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790427#action_12790427
] 

Ari Rabkin commented on CHUKWA-430:
-----------------------------------

+1 to patch

> Narrow down input for FSM mapreduce job
> ---------------------------------------
>
>                 Key: CHUKWA-430
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-430
>             Project: Hadoop Chukwa
>          Issue Type: Bug
>          Components: MR Data Processors
>    Affects Versions: 0.4.0
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>             Fix For: 0.4.0
>
>         Attachments: CHUKWA-430.patch
>
>
> FSMDataloader supplies all demux output data to FSM state machine.  This is not efficient
because most of the data type do not contribute to state generation.  According to Jiaqi,
the state machine requires the following types:
>  JobHistoryTaskDataMapper:
> /chukwa/repos/chukwa/JobData
> /chukwa/repos/chukwa/TaskData
> TaskTrackerClientTraceMapper:
> /chukwa/repos/chukwa/ClientTraceDetailed
> DataNodeClientTraceMapper:
> /chukwa/repos/chukwa/ClientTraceDetailed
> This jira is to optimize the data loader supplied input, and narrow down the required
input type.

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