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Posted to issues@kudu.apache.org by "Andrew Wong (JIRA)" <ji...@apache.org> on 2018/12/18 05:27:00 UTC

[jira] [Closed] (KUDU-2415) READ_YOUR_WRITES scan with no prior operation fails

     [ https://issues.apache.org/jira/browse/KUDU-2415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Wong closed KUDU-2415.
-----------------------------
       Resolution: Fixed
         Assignee: Andrew Wong  (was: Hao Hao)
    Fix Version/s: 1.8.0

This should be fixed per the patches done for KUDU-2463. We're now guaranteed to have a non-0 clean time when servicing a scan.

> READ_YOUR_WRITES scan with no prior operation fails
> ---------------------------------------------------
>
>                 Key: KUDU-2415
>                 URL: https://issues.apache.org/jira/browse/KUDU-2415
>             Project: Kudu
>          Issue Type: Bug
>          Components: client, tserver
>    Affects Versions: 1.7.0
>            Reporter: Todd Lipcon
>            Assignee: Andrew Wong
>            Priority: Major
>             Fix For: 1.8.0
>
>
> If I create a new Java client, and then perform a scan in READ_YOUR_WRITES mode without having done any prior operations from that client, it sends an RPC with read_mode=READ_YOUR_WRITES but without any propagated or snapshot timestamp field set. The server seems to interpret this as a value '0' and then fails with the error:
> Snapshot timestamp is earlier than the ancient history mark. Consider increasing the value of the configuration parameter --tablet_history_max_age_sec. Snapshot timestamp: P: 0 usec, L: 1 Ancient History Mark: P: 1524607330402072 usec, L: 0 Physical time difference: -1524607330.402s



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