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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-621) Make MAX_VERSIONS work like TTL: In scans and gets, check MAX_VERSIONs setting and return that many only rather than wait on compaction
Date Fri, 09 May 2008 17:28:55 GMT
Make MAX_VERSIONS work like TTL: In scans and gets, check MAX_VERSIONs setting and return that
many only rather than wait on compaction
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                 Key: HBASE-621
                 URL: https://issues.apache.org/jira/browse/HBASE-621
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: stack


HBASE-47 added specification of TTL on cells.  The implementation checks cell timestamp against
configured TTL before returning results scanning or getting.  You can also set the maximum
versions of a cell to keep.  The maximum versions is not checked scanning or getting, only
when we compact (We'll drop cells that are beyond the maximum version at compaction time).
 This issue is about adding check for maximum versions to gets and scans so that if you ask
for all versions but have configured the store to only keep 3 versions, though 4 may have
been inserted, you'll currently get 4 returned (if compactions have not had a chance to run).

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