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https://issues.apache.org/jira/browse/CASSANDRA-21517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Semb Wever updated CASSANDRA-21517:
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Description:
Guardrail values of -1 and 0 both mean unlimited.
https://github.com/apache/cassandra/blob/cassandra-6.0/src/java/org/apache/cassandra/db/guardrails/MaxThreshold.java#L60
This comes from CASSANDRA-17146 and appears to have been an oversight.
This creates difficulties when you need finer control of the guardrails, like
not being able to configure "more than 0 is a warning" or "more than 0 is a
failure".
For example, a typically recommended approach to secondary indexes would be as
{code}
# disable secondary_indexes
secondary_indexes_total_fail_threshold = 0
# disable sasi
sasi_indexes_total_fail_threshold: 0
# unlimited sai, but max ten per table
sai_indexes_per_table_fail_threshold: 10
sai_indexes_total_fail_threshold: -1
{code}
was:
Guardrail values of -1 and 0 both mean unlimited.
https://github.com/apache/cassandra/blob/cassandra-6.0/src/java/org/apache/cassandra/db/guardrails/MaxThreshold.java#L60
This comes from CASSANDRA-17212 and appears to have been an oversight.
This creates difficulties when you need finer control of the guardrails, like
not being able to configure "more than 0 is a warning" or "more than 0 is a
failure".
For example, a typically recommended approach to secondary indexes would be as
{code}
# disable secondary_indexes
secondary_indexes_total_fail_threshold = 0
# disable sasi
sasi_indexes_total_fail_threshold: 0
# unlimited sai, but max ten per table
sai_indexes_per_table_fail_threshold: 10
sai_indexes_total_fail_threshold: -1
{code}
> Guardrail values of zero to mean literally zero (i.e. disabled)
> ---------------------------------------------------------------
>
> Key: CASSANDRA-21517
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21517
> Project: Apache Cassandra
> Issue Type: Improvement
> Components: Feature/Guardrails
> Reporter: Michael Semb Wever
> Assignee: Michael Semb Wever
> Priority: Normal
>
> Guardrail values of -1 and 0 both mean unlimited.
> https://github.com/apache/cassandra/blob/cassandra-6.0/src/java/org/apache/cassandra/db/guardrails/MaxThreshold.java#L60
> This comes from CASSANDRA-17146 and appears to have been an oversight.
> This creates difficulties when you need finer control of the guardrails, like
> not being able to configure "more than 0 is a warning" or "more than 0 is a
> failure".
> For example, a typically recommended approach to secondary indexes would be as
> {code}
> # disable secondary_indexes
> secondary_indexes_total_fail_threshold = 0
> # disable sasi
> sasi_indexes_total_fail_threshold: 0
> # unlimited sai, but max ten per table
> sai_indexes_per_table_fail_threshold: 10
> sai_indexes_total_fail_threshold: -1
> {code}
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