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https://issues.apache.org/jira/browse/CHUKWA-305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720925#action_12720925
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Eric Yang commented on CHUKWA-305:
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Both data collection and data processing system should set to UTC time. This
will reduce the complexity of time conversion. The browser (end user facing)
is the only place that should do time zone conversion.
> Inconsistent time inputs
> ------------------------
>
> Key: CHUKWA-305
> URL: https://issues.apache.org/jira/browse/CHUKWA-305
> Project: Hadoop Chukwa
> Issue Type: Bug
> Components: data collection, Data Processors
> Reporter: Jiaqi Tan
>
> Times in Job History logs are stored in UTC seconds from Epoch, but times in
> log-based sources e.g. clienttrace, and the daemon (DataNode, TaskTracker,
> JobTracker, NameNode) logs are in local timezones and in ISO-8601 strings,
> and do not have the timezone they are recorded in. This leads to
> inconsistencies when trying to correlate data in time across log-based
> sources and Job History data because the timezone of the data for the
> log-based sources which emit times in human-readable strings do not record
> the timezone.
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