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From "Ariel Weisberg (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-9485) RangeTombstoneListTest.addAllRandomTest failed on trunk
Date Tue, 26 May 2015 21:09:19 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14559870#comment-14559870
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Ariel Weisberg edited comment on CASSANDRA-9485 at 5/26/15 9:09 PM:
--------------------------------------------------------------------

Stripped it down, parallelized it, and was able to generate a seed that broke it quickly.
Although 2 out of the three systems crunched for a while with no luck. You do have to modify
the test to use a supplied random to addAllRandomTest so that you can use the seed. There
are issues with test execution order that make sharing a random instance across multiple tests
sketchy.

The seed I got was 6540729295339161742.



was (Author: aweisberg):
Stripped it down, parallelized it, and was able to generate a seed that broke it quickly.
Although 2 out of the three systems crunched for a while with no luck. You do have to modify
the test to use a supplied random to addAllRandomTest so that you can use the seed. There
are issues with test execution order that make sharing a random instance across multiple tests
sketchy.

The seed I got was 6540729295339161742 however when I hard coded it back in I couldn't reproduce
the problem. This makes me suspect there is an issue with hashcode/equality or comparison.


> RangeTombstoneListTest.addAllRandomTest failed on trunk
> -------------------------------------------------------
>
>                 Key: CASSANDRA-9485
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9485
>             Project: Cassandra
>          Issue Type: Test
>            Reporter: Ariel Weisberg
>            Assignee: Ariel Weisberg
>
> http://cassci.datastax.com/job/trunk_utest/201/testReport/org.apache.cassandra.db/RangeTombstoneListTest/addAllRandomTest/
> The test is also broken for reproducibility. It doesn't print the seed used for the RNG
so it isn't possible to take a failing run and reproduce it.



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