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https://issues.apache.org/jira/browse/FLUME-1275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13296005#comment-13296005
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Patrick Wendell commented on FLUME-1275:
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Hari,
In response to your 2), some implementations of nanoTime() only report time at
millisecond (or worse) granularity, due to limitations in underlying OS timing
mechanisms. So using nanoTimeDiff.machineIP.pid would likely result in row-key
overlap on these systems.
> Add Regex Serializer for HBaseSink
> ----------------------------------
>
> Key: FLUME-1275
> URL: https://issues.apache.org/jira/browse/FLUME-1275
> Project: Flume
> Issue Type: Improvement
> Reporter: Patrick Wendell
> Assignee: Patrick Wendell
> Attachments: FLUME-1275.patch.v1.txt
>
>
> It would be nice to have an "out of the box" HBase serializer that can
> extract column data from a regular expression. This is a feature in Hive and
> it is widely used:
> https://issues.apache.org/jira/browse/HIVE-167
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