[jira] [Updated] (CASSANDRA-8721) expose "shadowed" columns in tracing output

["C. Scott Andreas (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-8721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

C. Scott Andreas updated CASSANDRA-8721:
----------------------------------------
    Component/s: Observability

> expose "shadowed" columns in tracing output
> -------------------------------------------
>
>                 Key: CASSANDRA-8721
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8721
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Observability
>            Reporter: Robert Coli
>            Priority: Trivial
>
> Current tracing messages expose how many tombstones are read in order to read live columns, but they do not expose shadowed columns. Shadowed columns are columns where the timestamp for a given column is lower than the highest timestamp for that column.
> It would be useful for users who are tracing queries to understand how many shadowed columns are being read-than-ignored.



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