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https://issues.apache.org/jira/browse/HBASE-3293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15251119#comment-15251119
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Duo Zhang commented on HBASE-3293:
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This is by design or just a implementation choice? Either unix epoch time or
the jdk Calendar API can accept negative values...
> Negative timestamps can be inserted without fail but not read again
> -------------------------------------------------------------------
>
> Key: HBASE-3293
> URL: https://issues.apache.org/jira/browse/HBASE-3293
> Project: HBase
> Issue Type: Bug
> Environment: CentOS 5.5 with Cloudera's CDH3b3
> Reporter: fnord 999
>
> When inserting a value into HBase that has a negative timestamp, such as -1,
> HBase inserts that value without an exception or any kind of other warning if
> we use the Java API. The value is written to a region and the webinterface of
> the regionservers shows that there is data in them.
> However: neither a Scan nor a Get nor any other operation via MapReduce in
> the Shell or via Java can read that specific value out.
> There would be 2 different fixes in my opinion:
> 1. simply accept the negative timestamps consequently in read and write
> operations
> 2. if negative timestamps cannot be used, throw an exception when someone
> tries to insert an invalid timestamp
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