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From "Shawn Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-9815) Tracing doesn't seem to display tombstones read accurately
Date Wed, 15 Jul 2015 17:14:04 GMT
Shawn Kumar created CASSANDRA-9815:
--------------------------------------

             Summary: Tracing doesn't seem to display tombstones read accurately
                 Key: CASSANDRA-9815
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9815
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Shawn Kumar
            Priority: Minor
         Attachments: tracescreen.png

It seems that where tracing [once|http://stackoverflow.com/questions/27063508/how-to-get-tombstone-count-for-a-cql-query]
tracked how many tombstones were read in a query, it no longer happens.

Can reproduce with the following:
1. Create a simple key, val table.
2. Insert a couple rows
3. Flush
4. Delete a row, add an additional couple rows
5. Flush
6. Try to query deleted row or select *. 

In the trace it never mentions reading a tombstoned cell, no matter what. Instead you get
a line like the following: "Read 0 live and 0 tombstone cells [SharedPool-Worker-3]". Attached
is a screenshot of the trace. 



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