[jira] [Created] (CASSANDRA-13222) Paging with reverse queries and static columns may return incorrectly sized pages

["Sam Tunnicliffe (JIRA)" <ji...@apache.org>]

Sam Tunnicliffe created CASSANDRA-13222:
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             Summary: Paging with reverse queries and static columns may return incorrectly sized pages
                 Key: CASSANDRA-13222
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13222
             Project: Cassandra
          Issue Type: Bug
          Components: CQL, Local Write-Read Paths
            Reporter: Sam Tunnicliffe
            Assignee: Sam Tunnicliffe


There are 2 specialisations of `ColumnCounter` that deal with static columns differently depending on the order of iteration through the column family and which impl is used generally depends on whether or not the `ColumnFilter` in use is reversed. However, the base method `ColumnCounter::countAll`` always uses forward iteration, which can result in overcounting when the query is reversed and there are statics involved. In turn, this leads to incorrectly sized pages being returned to the client.



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