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Posted to issues@kudu.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2016/12/05 03:47:58 UTC

[jira] [Commented] (KUDU-1767) Reordering of client operations from the same KuduSession is possible

    [ https://issues.apache.org/jira/browse/KUDU-1767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15721125#comment-15721125 ] 

Todd Lipcon commented on KUDU-1767:
-----------------------------------

Ping [~mpercy]

> Reordering of client operations from the same KuduSession is possible
> ---------------------------------------------------------------------
>
>                 Key: KUDU-1767
>                 URL: https://issues.apache.org/jira/browse/KUDU-1767
>             Project: Kudu
>          Issue Type: Bug
>          Components: client, tablet
>    Affects Versions: 1.1.0
>            Reporter: Mike Percy
>            Priority: Critical
>
> It is possible for client operations written via the same KuduSession to be reordered on the server side in MANUAL_FLUSH and AUTO_BACKGROUND_FLUSH modes. This violates our desired consistency guarantees.
> This may occur because we allow concurrent flushes from the client for throughput reasons and there is nothing enforcing the well-ordering of lock acquisition from a single client session on the server side.



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