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https://issues.apache.org/jira/browse/CASSANDRA-18940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Caleb Rackliffe updated CASSANDRA-18940:
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Description: Once an SAI index finds matches (primary keys), it reads the
associated rows and post-filters them to incorporate partial writes,
tombstones, etc. However, those reads are not currently updating the local
table latency metrics. It should be simple enough to attach a metrics recording
transformation to the iterator produced by querying local storage. (was: Once
an SAI index finds matches (primary keys), it reads the associated rows and
post-filters them to incorporate partial writes, tombstones, etc. However,
those reads are not currently updating the local table latency metrics. It
should be simple enough to attach a metrics recording transformation to the
iterator produced by querying local storage. (I've attached a patch that should
apply cleanly to trunk, but there may be a better way...))
> SAI post-filtering reads don't update local table latency metrics
> -----------------------------------------------------------------
>
> Key: CASSANDRA-18940
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18940
> Project: Cassandra
> Issue Type: Bug
> Components: Feature/2i Index, Feature/SAI, Observability/Metrics
> Reporter: Caleb Rackliffe
> Assignee: Caleb Rackliffe
> Priority: Normal
> Fix For: 5.0.x, 5.x
>
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Once an SAI index finds matches (primary keys), it reads the associated rows
> and post-filters them to incorporate partial writes, tombstones, etc.
> However, those reads are not currently updating the local table latency
> metrics. It should be simple enough to attach a metrics recording
> transformation to the iterator produced by querying local storage.
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