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From "Gaurav Menghani (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HBASE-11257) [0.89-fb] Remove the timestamp from the annotation of Put
Date Wed, 09 Jul 2014 21:11:06 GMT

     [ https://issues.apache.org/jira/browse/HBASE-11257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gaurav Menghani resolved HBASE-11257.
-------------------------------------

      Resolution: Fixed
    Release Note: This was completed.

> [0.89-fb] Remove the timestamp from the annotation of Put
> ---------------------------------------------------------
>
>                 Key: HBASE-11257
>                 URL: https://issues.apache.org/jira/browse/HBASE-11257
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Gaurav Menghani
>            Assignee: Gaurav Menghani
>            Priority: Minor
>
> David and I, recently found out, when discussing the C++ client with @csliu from the
Search Team, that we have an extraneous timestamp field in the Put. Actually, that field is
used when we create a Put object like:
> Put p = new Put(row, ts);
> And then, if you do:
> p.add(cf, qualifier, value);
> it would use ts as a timestamp for the KeyValue for the cf, qualifier. If you did not
specify it, it will use HConstants.LATEST_TIMESTAMP.
> One can also do this, where you explicitly state the timestamp to be used:
> p.add(cf, qualifier, ts, value)
> In either case, when the add() method is called, the KeyValue is constructed, and it
has the proper timestamp. Therefore, once you have created the family map with all these KeyValues,
you don't need to send the ts field provided during the construction. All the KVs will have
the correct timestamp embedded by the time it will be sent across.
> This diff removes the timestamp field from the Put object. This will save us some network
bandwidth, hopefully :)



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