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From "Mac Yang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CHUKWA-75) iostat output overflow
Date Wed, 01 Apr 2009 20:37:13 GMT

    [ https://issues.apache.org/jira/browse/CHUKWA-75?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694723#action_12694723
] 

Mac Yang commented on CHUKWA-75:
--------------------------------

Agree that it does not make sense to remove the whole record, however, instead of setting
the value to 0, it might be better to remove the offending value and set it to null. It's
probably also a good idea to generate a log entry.

As for the NumberFormatException, sounded like there might be a reason for why it's handled
this way. It would be useful to elaborate on this a little so everyone is on the same page.

> iostat output overflow
> ----------------------
>
>                 Key: CHUKWA-75
>                 URL: https://issues.apache.org/jira/browse/CHUKWA-75
>             Project: Hadoop Chukwa
>          Issue Type: Bug
>          Components: Data Processors
>         Environment: Redhat 5.1, Java 6
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>         Attachments: CHUKWA-75.patch
>
>
> On older systems, iostat metrics contain random overflow.  The plan is the put in a filter
to remove the overflow in the demux parser to improve the data quality.

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