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https://issues.apache.org/jira/browse/CASSANDRA-9522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14612042#comment-14612042
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Jim Witschey commented on CASSANDRA-9522:
-----------------------------------------
I failed to review this properly and have to reopen -- I didn't ask for cassci
links before +1ing this change:
http://cassci.datastax.com/view/Dev/view/tjake/job/tjake-stress-9522-dtest/1/console
This fails on, e.g.
{{sstablesplit_test.py:TestSSTableSplit.single_file_split_test}} with an NPE in
{{PredefinedOperation.<init>}}. Failing output in [this
Gist|https://gist.github.com/mambocab/acaa2a880c2e55d9de8b].
> Specify unset column ratios in cassandra-stress write
> -----------------------------------------------------
>
> Key: CASSANDRA-9522
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9522
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Reporter: Jim Witschey
> Assignee: T Jake Luciani
> Fix For: 3.0 beta 1
>
>
> I'd like to be able to use stress to generate workloads with different
> distributions of unset columns -- so, for instance, you could specify that
> rows will have 70% unset columns, and on average, a 100-column row would
> contain only 30 values.
> This would help us test the new row formats introduced in 8099. There are a 2
> different row formats, used depending on the ratio of set to unset columns,
> and this feature would let us generate workloads that would be stored in each
> of those formats.
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