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Posted to issues@kudu.apache.org by "David Alves (JIRA)" <ji...@apache.org> on 2016/10/14 19:27:20 UTC

[jira] [Created] (KUDU-1704) Add a new read mode to perform bounded staleness snapshot reads

David Alves created KUDU-1704:
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             Summary: Add a new read mode to perform bounded staleness snapshot reads
                 Key: KUDU-1704
                 URL: https://issues.apache.org/jira/browse/KUDU-1704
             Project: Kudu
          Issue Type: Improvement
    Affects Versions: 1.1.0
            Reporter: David Alves
            Assignee: David Alves


It would be useful to be able to perform snapshot reads at a timestamp that is higher than a client provided timestamp, thus improving recency, but lower that the server's oldest inflight transaction, thus minimizing the scan's chance to block.

Such a mode would not guarantee linearizability, but would still allow for client-local read-your-writes, which seems to be one of the properties users care about the most.

This should likely be the new default read mode for scanners.




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