Robert Coli created CASSANDRA-8721:
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             Summary: expose "shadowed" columns in tracing output
                 Key: CASSANDRA-8721
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8721
             Project: Cassandra
          Issue Type: Improvement
            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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