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https://issues.apache.org/jira/browse/CASSANDRA-11539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Russ Hatch updated CASSANDRA-11539:
-----------------------------------
Reviewer: Jim Witschey
Status: Patch Available (was: Open)
> dtest failure in topology_test.TestTopology.movement_test
> ---------------------------------------------------------
>
> Key: CASSANDRA-11539
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11539
> Project: Cassandra
> Issue Type: Test
> Components: Testing
> Reporter: Michael Shuler
> Assignee: Russ Hatch
> Labels: dtest
> Fix For: 3.x
>
>
> example failure:
> {noformat}
> Error Message
> values not within 16.00% of the max: (335.88, 404.31) ()
> -------------------- >> begin captured logging << --------------------
> dtest: DEBUG: cluster ccm directory: /mnt/tmp/dtest-XGOyDd
> dtest: DEBUG: Custom init_config not found. Setting defaults.
> dtest: DEBUG: Done setting configuration options:
> { 'num_tokens': None,
> 'phi_convict_threshold': 5,
> 'range_request_timeout_in_ms': 10000,
> 'read_request_timeout_in_ms': 10000,
> 'request_timeout_in_ms': 10000,
> 'truncate_request_timeout_in_ms': 10000,
> 'write_request_timeout_in_ms': 10000}
> --------------------- >> end captured logging << ---------------------
> Stacktrace
> File "/usr/lib/python2.7/unittest/case.py", line 329, in run
> testMethod()
> File "/home/automaton/cassandra-dtest/topology_test.py", line 93, in
> movement_test
> assert_almost_equal(sizes[1], sizes[2])
> File "/home/automaton/cassandra-dtest/assertions.py", line 75, in
> assert_almost_equal
> assert vmin > vmax * (1.0 - error) or vmin == vmax, "values not within
> %.2f%% of the max: %s (%s)" % (error * 100, args, error_message)
> "values not within 16.00% of the max: (335.88, 404.31)
> ()\n-------------------- >> begin captured logging <<
> --------------------\ndtest: DEBUG: cluster ccm directory:
> /mnt/tmp/dtest-XGOyDd\ndtest: DEBUG: Custom init_config not found. Setting
> defaults.\ndtest: DEBUG: Done setting configuration options:\n{
> 'num_tokens': None,\n 'phi_convict_threshold': 5,\n
> 'range_request_timeout_in_ms': 10000,\n 'read_request_timeout_in_ms':
> 10000,\n 'request_timeout_in_ms': 10000,\n
> 'truncate_request_timeout_in_ms': 10000,\n 'write_request_timeout_in_ms':
> 10000}\n--------------------- >> end captured logging <<
> ---------------------"
> {noformat}
> http://cassci.datastax.com/job/cassandra-3.5_novnode_dtest/22/testReport/topology_test/TestTopology/movement_test
> ----
> I dug through this test's history on the trunk, 3.5, 3.0, and 2.2 branches.
> It appears this test is stable and passing on 3.0 & 2.2 (which could be just
> luck). On trunk & 3.5, however, this test has flapped a small number of times.
> The test's threshold is 16% and I found test failures in the 3.5 branch of
> 16.2%, 16.9%, and 18.3%. In trunk I found 17.4% and 23.5% diff failures.
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