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Posted to issues@kudu.apache.org by "Alexey Serbin (JIRA)" <ji...@apache.org> on 2017/04/13 00:34:41 UTC

[jira] [Comment Edited] (KUDU-1837) kudu-jepsen reports non-linearizable history for the tserver-majorities-ring scenario

    [ https://issues.apache.org/jira/browse/KUDU-1837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15966918#comment-15966918 ] 

Alexey Serbin edited comment on KUDU-1837 at 4/13/17 12:34 AM:
---------------------------------------------------------------

This bug is not valid since the kudu-jepsen ran in wrong client model: using a separate Kudu client per test actor.  That model would require to propagate timestamp between clients for sound test results, but that was not the case.

The client model has been updated by changelist 678a309b5d88e2fe9c6a0674ba7de00daee35cac: since then all test actors share the same Kudu client instance, so timestamp is propagated automatically.

After the client model has been updated, no error occurred so far.  If any new issues is found by the new kudu-jepsen code, please open a new JIRA item for that.


was (Author: aserbin):
This bug is not valid since the kudu-jepsen ran in wrong client model: using a separate Kudu client per test actor.  That model would require to propagate timestamp between clients for sound test results, but that was not the case.

The client model has been updated by changelist 678a309b5d88e2fe9c6a0674ba7de00daee35cac: since then all test actors share the same Kudu client instance, so timestamp is propagated automatically.

> kudu-jepsen reports non-linearizable history for the tserver-majorities-ring scenario
> -------------------------------------------------------------------------------------
>
>                 Key: KUDU-1837
>                 URL: https://issues.apache.org/jira/browse/KUDU-1837
>             Project: Kudu
>          Issue Type: Bug
>    Affects Versions: 1.2.0
>            Reporter: Alexey Serbin
>              Labels: kudu-jepsen
>             Fix For: 1.4.0
>
>         Attachments: 20170115T142504.000-0800.tar.bz2
>
>
> The kudu-jepsen test has found an instance of non-linearizable history for the tserver-majorities-ring scenario.  The artifacts from the failed scenario are attached.



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