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https://issues.apache.org/jira/browse/CASSANDRA-7718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14090693#comment-14090693
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Sylvain Lebresne commented on CASSANDRA-7718:
---------------------------------------------
I suspect that this might just be a problem with the test itself. The test does
a simple insertion through the cli and then select through CQL. Except that
interactions with the cli are rather hackish: we interact through stdin and
stdout and in practice it's not entirely guaranteed that the cli insertion has
been really done when we do the select through CQL. And I think that's all
there is to it. The use of cli in the first place was done for expediency but
the "right" fix would probably be run the insert through thrift directly, not
the cli (it's just so annoying to have to write 10 lines of code to do a simple
insert). Honestly, I'd be tempted to just add a small sleep between the 2
operations to make sure we don't race and call it a day...
> dtest cql_tests.py:TestCQL.cql3_insert_thrift_test fails intermittently
> -----------------------------------------------------------------------
>
> Key: CASSANDRA-7718
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7718
> Project: Cassandra
> Issue Type: Test
> Components: Tests
> Environment: cassandra-2.1.0 branch
> Reporter: Michael Shuler
> Assignee: Aleksey Yeschenko
> Fix For: 2.1.0
>
> Attachments: node1.log
>
>
> This test fails about 20-25% of the time - ran about 10 times through looping
> the test, and it typically fails on the 4th or 5th test.
> {noformat}
> (master)mshuler@hana:~/git/cassandra-dtest$ ../loop_dtest.sh
> "cql_tests.py:TestCQL.cql3_insert_thrift_test"
> <...>
> ==== Run #4 ====
> nose.config: INFO: Ignoring files matching ['^\\.', '^_', '^setup\\.py$']
> cql3_insert_thrift_test (cql_tests.TestCQL) ... cluster ccm directory:
> /tmp/dtest-Drwunj
> [node1 ERROR]
> [node1 ERROR]
> FAIL
> removing ccm cluster test at: /tmp/dtest-Drwunj
> ======================================================================
> FAIL: cql3_insert_thrift_test (cql_tests.TestCQL)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File "/home/mshuler/git/cassandra-dtest/cql_tests.py", line 1627, in
> cql3_insert_thrift_test
> assert res == [ [2, 4, 200] ], res
> AssertionError: []
> ----------------------------------------------------------------------
> Ran 1 test in 7.192s
> {noformat}
> loop_dtest.sh:
> {noformat}
> #!/bin/bash
> if [ ${1} ]; then
> export MAX_HEAP_SIZE="1G"
> export HEAP_NEWSIZE="256M"
> export PRINT_DEBUG=true
> COUNT=0
> while true; do
> echo
> echo "==== Run #$COUNT ===="
> nosetests --nocapture --nologcapture --verbosity=3 ${1}
> if [ $? -ne 0 ]; then
> exit 1
> fi
> ((COUNT++))
> sleep 0.5
> done
> unset MAX_HEAP_SIZE HEAP_NEWSIZE PRINT_DEBUG
> else
> echo " ${0} needs a test to run.."
> exit 255
> fi
> {noformat}
> I find no ERROR/WARN log entries from the failed test - attached node log
> anyway.
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