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https://issues.apache.org/jira/browse/HADOOP-1538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12511263
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Jim Kellerman commented on HADOOP-1538:
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Does it make sense to have time stamped deletes?
Currently, a delete operation erases all the values for the specified column,
whose time stamp is less than 'now', effectively erasing all the values for the
column.
If a time stamp is specified on an update which contains a delete, then it
would 'erase' all versions of the column whose time stamp <= the update time
stamp.
> Provide capability for client specified time stamps in HBase
> ------------------------------------------------------------
>
> Key: HADOOP-1538
> URL: https://issues.apache.org/jira/browse/HADOOP-1538
> Project: Hadoop
> Issue Type: New Feature
> Components: contrib/hbase
> Affects Versions: 0.14.0
> Reporter: Jim Kellerman
> Assignee: Jim Kellerman
> Priority: Minor
> Fix For: 0.14.0
>
>
> Currently all records stored in HBase are given a time stamp derived from the
> current time. It should be possible for the client to specify the time stamp.
> For example, if a web crawler is storing page contents in HBase, it should be
> able to set the time stamp to the crawl time which is not necessarily 'now'
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