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https://issues.apache.org/jira/browse/CASSANDRA-15773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17100695#comment-17100695
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Stephen Mallette commented on CASSANDRA-15773:
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[~dcapwell] thanks for the feedback:
> Since we don't free, and the metric is how many chunks are leant out, >=
> totalBytesRequestedFromPool should hold true and would be more accurate than
> > 0
yes - that sounds smart to me - I've made that change.
> the test makes an assumption at buffer pool size, which may not be true in CI,
I've initialized the test with a fixed size to the pool:
https://github.com/apache/cassandra/compare/trunk...spmallette:CASSANDRA-15773-trunk#diff-790a43fcd6ed69f4122cd0fe205c847bR48-R52
> leaking, should cleanup after the test is over; same for the other test
I might not understand something but I thought that this would prevent such
problems:
https://github.com/apache/cassandra/compare/trunk...spmallette:CASSANDRA-15773-trunk#diff-790a43fcd6ed69f4122cd0fe205c847bR54-R58
which effectively calls:
{code}
static void unsafeReset()
{
localPool.get().unsafeRecycle();
globalPool.unsafeFree();
}
{code}
on {{BufferPool}} itself. Do I need to do something more?
> Add test to cover metrics related to the BufferPool
> ---------------------------------------------------
>
> Key: CASSANDRA-15773
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15773
> Project: Cassandra
> Issue Type: Improvement
> Components: Test/unit
> Reporter: Stephen Mallette
> Assignee: Stephen Mallette
> Priority: Normal
>
> At this time there do not appear to be unit tests to validate
> {{BufferPoolMetrics}}.
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