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Posted to dev@omid.apache.org by "James Taylor (JIRA)" <ji...@apache.org> on 2018/06/16 21:14:00 UTC

[jira] [Created] (OMID-104) Support TTL

James Taylor created OMID-104:
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             Summary: Support TTL
                 Key: OMID-104
                 URL: https://issues.apache.org/jira/browse/OMID-104
             Project: Apache Omid
          Issue Type: Bug
            Reporter: James Taylor


Because of the multiplication that is done on Cell timestamps, the default TTL mechanism in HBase won't work. It's fairly easy to emulate it, though, since Cells have a timestamp that still corresponds to wall clock time. For example implementation in Tephra, see:
 * TransactionProcessor.createStoreScanner() which is called from preCompactScannerOpen()
 * TransactionVisibilityFilter which filters Cells that are past their TTL

This isn't a showstopper for release in Phoenix, but it a pretty important feature as most use cases depend on this functionality.



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