[jira] [Updated] (CASSANDRA-9764) dtest for many UPDATE batches, low contention fails on trunk

["Jim Witschey (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-9764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jim Witschey updated CASSANDRA-9764:
------------------------------------
    Assignee: Sylvain Lebresne

> dtest for many UPDATE batches, low contention fails on trunk
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-9764
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9764
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Jim Witschey
>            Assignee: Sylvain Lebresne
>            Priority: Blocker
>             Fix For: 3.0 beta 1
>
>
> {{paxos_tests.py:TestPaxos.contention_test_multi_iterations}} fails consistently on trunk ([cassci history|http://cassci.datastax.com/view/trunk/job/trunk_dtest/lastSuccessfulBuild/testReport/paxos_tests/TestPaxos/contention_test_multi_iterations/history/]). The test works by creating 8 workers, each of which increments an integer 100 times using UPDATE. Based on the test failures, it looks like 2 or 3 of the updates are consistently dropped. Other dtests that don't run as many iterations but have more contention succeed.
> I'm assigning you, [~slebresne], because you wrote the test and were the last person to modify it, but feel free to reassign. Thanks!



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