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https://issues.apache.org/jira/browse/CASSANDRA-12895?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15670290#comment-15670290
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Marcus Eriksson commented on CASSANDRA-12895:
---------------------------------------------
Looks like we just had some bad luck with the stress writing - the disk
boundaries are balanced. Increasing the amount of data written here:
https://github.com/krummas/cassandra-dtest/commits/marcuse/12895
and ran it 100 times here:
http://cassci.datastax.com/view/Dev/view/stef1927/job/stef1927-dtest-multiplex/78/
> dtest failure in disk_balance_test.TestDiskBalance.disk_balance_stress_test
> ---------------------------------------------------------------------------
>
> Key: CASSANDRA-12895
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12895
> Project: Cassandra
> Issue Type: Bug
> Reporter: Michael Shuler
> Assignee: Marcus Eriksson
> Labels: dtest, test-failure
>
> example failure:
> http://cassci.datastax.com/job/trunk_dtest/1418/testReport/disk_balance_test/TestDiskBalance/disk_balance_stress_test
> {noformat}
> Error Message
> 'float' object has no attribute '2f'
> -------------------- >> begin captured logging << --------------------
> dtest: DEBUG: cluster ccm directory: /tmp/dtest-lxr8Vr
> dtest: DEBUG: Done setting configuration options:
> { 'initial_token': None,
> 'num_tokens': '32',
> '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/disk_balance_test.py", line 31, in
> disk_balance_stress_test
> self.assert_balanced(node)
> File "/home/automaton/cassandra-dtest/disk_balance_test.py", line 120, in
> assert_balanced
> assert_almost_equal(*sums, error=0.1, error_message=node.name)
> File "/home/automaton/cassandra-dtest/tools/assertions.py", line 187, in
> assert_almost_equal
> assert vmin > vmax * (1.0 - error) or vmin == vmax, "values not within
> {.2f}% of the max: {} ({})".format(error * 100, args, error_message)
> "'float' object has no attribute '2f'\n-------------------- >> begin captured
> logging << --------------------\ndtest: DEBUG: cluster ccm directory:
> /tmp/dtest-lxr8Vr\ndtest: DEBUG: Done setting configuration options:\n{
> 'initial_token': None,\n 'num_tokens': '32',\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}
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