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From "stack (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5674) add support in HBase to overwrite hbase timestamp to a version number during major compaction
Date Fri, 30 Mar 2012 06:27:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242102#comment-13242102

stack commented on HBASE-5674:

I didn't get the 'reference'.  Sorry, that email went over my head.

bq. So are you referring this as conflicting with your 'hardcore production worthy platform'

First its not 'my' goal.   Check out the notes from recent HBase PMC meeting:  http://blogs.apache.org/hbase/.

That said, I thought it a different kinda 'researchy' that was being referred to.  I like
the 'research' you fellas are at.

(Pardon me.  I did not read the name on the issue before responding.  All I saw was the short
description asking for an 'odd', little-substantiated behavior and I asked a question.  Even
on your comeback, I failed to check the whom and was innocently reacting to what I thought
was a request that hbase become a dumping ground for plugins and research)

> add support in HBase to overwrite hbase timestamp to a version number during major compaction
> ---------------------------------------------------------------------------------------------
>                 Key: HBASE-5674
>                 URL: https://issues.apache.org/jira/browse/HBASE-5674
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: He Yongqiang
>            Assignee: He Yongqiang
> Right now, a millisecond-level timestamp is attached to every record. 
> In our case, we only need a version number (mostly it will be just zero etc). A millisecond
timestamp is too heavy to carry. We should add support to overwrite it to zero during major
> KVs before major compaction will remain using system timestamp. And this should be configurable,
so that we should not mess up if the hbase timestamp is specified by application.

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