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Benedict commented on CASSANDRA-11017:
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Yes, looks like it hasn't been wired up. It should be passing a timer context
into the {{MemtableAllocator.SubAllocator}}'s {{parent.hasRoom().register()}}
call, inside of {{allocate}}.
It would require passing a reference to the histogram in the {{SubAllocator}}
constructor, so that we can construct a timer context when necessary.
> WaitingOnFreeMemtableSpace metric does nothing
> ----------------------------------------------
>
> Key: CASSANDRA-11017
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11017
> Project: Cassandra
> Issue Type: Bug
> Components: Observability
> Reporter: Chris Lohfink
> Priority: Minor
>
> I think it was added in https://issues.apache.org/jira/browse/CASSANDRA-5549
> but never actually used. I may be missing something though. Not sure where
> this should be wired in or if it should just be removed?
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