[
https://issues.apache.org/jira/browse/CASSANDRA-15537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17206325#comment-17206325
]
Yifan Cai commented on CASSANDRA-15537:
---------------------------------------
Hi Josh. The diff test is the type of test that discovers new things with
different workloads / configurations. We gain confidence in 4.0 with more and
more tests passed. But there is no fine line to say the test is done.
Therefore, I'd prefer to have this ticket "open until others are closed" and
tested with hundreds of clusters.
The diff tool is open sourced. It would be great if others can run diff on
their clusters. People should have restore functionality in their automation.
> 4.0 quality testing: Local Read/Write Path: Upgrade and Diff Test
> -----------------------------------------------------------------
>
> Key: CASSANDRA-15537
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15537
> Project: Cassandra
> Issue Type: Task
> Components: Test/dtest/java, Test/dtest/python
> Reporter: Josh McKenzie
> Assignee: Yifan Cai
> Priority: Normal
> Fix For: 4.0-beta, 4.0-triage
>
>
> Reference [doc from
> NGCC|https://docs.google.com/document/d/1uhUOp7wpE9ZXNDgxoCZHejHt5SO4Qw1dArZqqsJccyQ/edit#]
> for context.
> Execution of upgrade and diff tests via cassandra-diff have proven to be one
> of the most effective approaches toward identifying issues with the local
> read/write path. These include instances of data loss, data corruption, data
> resurrection, incorrect responses to queries, incomplete responses, and
> others. Upgrade and diff tests can be executed concurrent with fault
> injection (such as host or network failure); as well as during mixed-version
> scenarios (such as upgrading half of the instances in a cluster, and running
> upgradesstables on only half of the upgraded instances).
> Upgrade and diff tests are expected to continue through the release cycle,
> and are a great way for contributors to gain confidence in the correctness of
> the database under their own workloads.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
