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https://issues.apache.org/jira/browse/CASSANDRA-15579?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17149589#comment-17149589
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Jordan West commented on CASSANDRA-15579:
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+1 to testing these paths during upgrades. Here is a recently reported upgrade
bug I am working on https://issues.apache.org/jira/browse/CASSANDRA-15833. In
this specific case I've included a test but generally, we can try to see why
the existing tests didn't catch something like this and what can be done to
improve them.
One other idea is to convert the higher value dtests to in-jvm dtests where
they have more control over the underlying code and use less resources –
improving their coverage along the way. I noticed that several of the tests
linked above are marked resource intensive. If I am quickly reading the [circle
CI
configs|https://github.com/apache/cassandra/blob/trunk/.circleci/config.yml.HIGHRES#L123]
correctly, we are skipping those.
Agreed we should treat Transient Replication separately as well.
> 4.0 quality testing: Distributed Read/Write Path: Coordination, Replication,
> and Read Repair
> --------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-15579
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15579
> Project: Cassandra
> Issue Type: Task
> Components: Test/unit
> Reporter: Josh McKenzie
> Assignee: Andres de la Peña
> Priority: Normal
> Fix For: 4.0-beta
>
>
> Reference [doc from
> NGCC|https://docs.google.com/document/d/1uhUOp7wpE9ZXNDgxoCZHejHt5SO4Qw1dArZqqsJccyQ/edit#]
> for context.
> *Shepherd: Blake Eggleston*
> Testing in this area focuses on non-node-local aspects of the read-write
> path: coordination, replication, read repair, etc.
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