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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-4071) Data GC: Remove all versions > TTL EXCEPT the last written version
Date Thu, 07 Jul 2011 03:55:16 GMT
Data GC: Remove all versions > TTL EXCEPT the last written version
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                 Key: HBASE-4071
                 URL: https://issues.apache.org/jira/browse/HBASE-4071
             Project: HBase
          Issue Type: New Feature
            Reporter: stack


We were chatting today about our backup cluster.  What we want is to be able to restore the
dataset from any point of time but only within a limited timeframe -- say one week.  Thereafter,
if the versions are older than one week, rather than as we do with TTL where we let go of
all versions older than TTL, instead, let go of all versions EXCEPT the last one written.
 So, its like versions==1 when TTL > one week.  We want to allow that if an error is caught
within a week of its happening -- user mistakenly removes a critical table -- then we'll be
able to restore up the the moment just before catastrophe hit otherwise, we keep one version
only.

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