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https://issues.apache.org/jira/browse/CASSANDRA-15375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17042673#comment-17042673
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David Capwell commented on CASSANDRA-15375:
-------------------------------------------
bq. My preference is to remove the back pressure feature entirely, since it's
never really been tested at scale that I know of.
A large chunk of the work for 4.0 is testing, so removing something because its
not tested isn't really fair since this wouldn't be unique. Also, based off
this JIRA, you can disable it; so don't see a reason to remove.
bq. In 4.0 we have the capability of pushing the actual internode backpressure
back to clients
Is there a jira for actually testing the different back pressures we have
before 4.0 releases? If not can we?
I would personally love to see "this is how 4.0 doesn't crash under load" and
tests to back it up; if there is a test for this already do let me know =)
> back pressure log line is misleading
> ------------------------------------
>
> Key: CASSANDRA-15375
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15375
> Project: Cassandra
> Issue Type: Bug
> Components: Observability/Logging
> Reporter: Jon Haddad
> Assignee: Jon Haddad
> Priority: Low
>
> This is odd:
> {{INFO [main] 2019-10-25 10:33:07,985 DatabaseDescriptor.java:803 -
> Back-pressure is disabled with strategy
> org.apache.cassandra.net.RateBasedBackPressure\{high_ratio=0.9, factor=5,
> flow=FAST}.}}
> When I saw that, I wasn't sure if back pressure was actually disabled, or if
> I was really using {{RateBasedBackPressure.}}
> This should change to output either:
> {{Back-pressure is disabled}}
> {{or}}
> {{Back-pressure is enabled with strategy
> org.apache.cassandra.net.RateBasedBackPressure\{high_ratio=0.9, factor=5,
> flow=FAST}.}}{{}}
>
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