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https://issues.apache.org/jira/browse/CASSANDRA-18626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17738057#comment-17738057
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Andres de la Peña commented on CASSANDRA-18626:
-----------------------------------------------

The proposed patch follows the approach that was discussed for CASSANDRA-18617. 
The deprecated properties are removed from {{cassandra.yaml}} and transformed 
into the equivalent guardrails with a {{@Replaces}} tag. If an old 
{{cassandra.yaml}} contains the old properties they will be used to set the 
guardrails. But if they are absent, they will be disabled by default, same as 
the guardrail.
||PR||CI||
|[trunk|https://github.com/apache/cassandra/pull/2454/files]|[j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/2989/workflows/c6882a4a-e85b-458a-9a22-235e9b892b8a]
 
[j11|https://app.circleci.com/pipelines/github/adelapena/cassandra/2989/workflows/f1828d81-b01f-4258-a88e-2a45c749e2e7]|
|[dtest|https://github.com/apache/cassandra-dtest/pull/223]||

> compaction_tombstone_warning_threshold and 
> compaction_large_partition_warning_threshold cause deprecation warnings
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-18626
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18626
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Feature/Guardrails
>            Reporter: Brandon Williams
>            Assignee: Andres de la Peña
>            Priority: Normal
>             Fix For: 5.x
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> If you start trunk without any changes you will see at startup:
> {noformat}
> WARN  [main] 2023-06-26 15:59:36,613 YamlConfigurationLoader.java:426 - 
> [compaction_tombstone_warning_threshold, 
> compaction_large_partition_warning_threshold] parameters have been 
> deprecated. They have new names and/or value format; For more information, 
> please refer to NEWS.txt
> {noformat}
> We should give these the same treatment as CASSANDRA-18617, removing them 
> from the default yaml to stop the warnings, but still accepting them with 
> converters and @Replaces tags.



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