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From "Jim Witschey (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-9764) dtest for many UPDATE batches, low contention fails on trunk
Date Wed, 08 Jul 2015 21:36:04 GMT
Jim Witschey created CASSANDRA-9764:
---------------------------------------

             Summary: 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
            Priority: Blocker


{{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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