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https://issues.apache.org/jira/browse/CHUKWA-75?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694731#action_12694731
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Eric Yang commented on CHUKWA-75:
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The columns are mapped differently in different linux distro. The parser
doesn't employ a strict type check, rather, it attempts to extract information
by column separations. Hence, if the column is not a number, it must be a
string, and we store the column as a string. This enable us to map columns by
column header regardless how the column are rearranged.
Instead of 0, it is better to store as null. Reopen to fix this again.
> 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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