[jira] [Updated] (KUDU-561) On Log appends, allow to specify if an fsync is required per message

["Mike Percy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KUDU-561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mike Percy updated KUDU-561:
----------------------------
    Parent: KUDU-560

> On Log appends, allow to specify if an fsync is required per message
> --------------------------------------------------------------------
>
>                 Key: KUDU-561
>                 URL: https://issues.apache.org/jira/browse/KUDU-561
>             Project: Kudu
>          Issue Type: Sub-task
>          Components: log
>    Affects Versions: M4.5
>            Reporter: David Alves
>            Assignee: David Alves
>
> Right now fsync is either disabled or enabled, which means all messages are fsynced or none are. However, once KUDU-120 is in place, only Replicate messages will ever need to be fsynced.
> We should be able to specify whether a message requires fsync or not, with the following contract:
> If fsync is required for a message, the callback is not called before it has been performed, otherwise it might or might not have been performed.



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