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Posted to issues@ratis.apache.org by "Burcu Ozkan (Jira)" <ji...@apache.org> on 2020/08/31 12:45:00 UTC

[jira] [Updated] (RATIS-1048) Ratis cluster fails to elect a leader when some messages are dropped

     [ https://issues.apache.org/jira/browse/RATIS-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Burcu Ozkan updated RATIS-1048:
-------------------------------
    Summary: Ratis cluster fails to elect a leader when some messages are dropped  (was: Ratis cluster fail to elect a leader when some messages are dropped)

> Ratis cluster fails to elect a leader when some messages are dropped
> --------------------------------------------------------------------
>
>                 Key: RATIS-1048
>                 URL: https://issues.apache.org/jira/browse/RATIS-1048
>             Project: Ratis
>          Issue Type: Bug
>            Reporter: Burcu Ozkan
>            Priority: Major
>         Attachments: logs.txt, msgs.txt
>
>
> I am testing fault tolerance of Ratis, more specifically whether it can tolerate random message losses. Simply, I drop some of the messages and do not deliver them to the recipient. 
> In some tests, I observe executions in which the Ratis servers cannot elect a leader. The servers continuously start leader election but none of them succeed.
> You can find the execution logs together with the list of exchanged and dropped messages (the messages marked by "-D" are dropped) in the attachments.



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