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From "Ari Rabkin (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CHUKWA-349) State-machine generation across split files
Date Tue, 14 Jul 2009 22:43:14 GMT

    [ https://issues.apache.org/jira/browse/CHUKWA-349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12731172#action_12731172
] 

Ari Rabkin commented on CHUKWA-349:
-----------------------------------

This isn't just about Demux boundaries; won't this come up whenever a user tries to visualize
a still-ongoing job?

> State-machine generation across split files
> -------------------------------------------
>
>                 Key: CHUKWA-349
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-349
>             Project: Hadoop Chukwa
>          Issue Type: Improvement
>          Components: Data Processors
>    Affects Versions: 0.3.0
>            Reporter: Jiaqi Tan
>            Assignee: Jiaqi Tan
>             Fix For: 0.3.0
>
>
> Current SALSA state-machine generation assumes input files contain all starts and ends
of all states; this may not be the case if the input data is sliced across Demux boundaries.
There is a need to track incomplete data across multiple runs of the FSMBuilder and to expire
and purge state as it's kept past a certain duration. 

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