[jira] [Created] (CASSANDRA-13423) Secondary indexes can return stale data for deleted rows in 2.x

["Benjamin Lerer (JIRA)" <ji...@apache.org>]

Benjamin Lerer created CASSANDRA-13423:
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             Summary: Secondary indexes can return stale data for deleted rows in 2.x
                 Key: CASSANDRA-13423
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13423
             Project: Cassandra
          Issue Type: Bug
            Reporter: Benjamin Lerer


In {{2.x}} when the secondary index detect that a row has been deleted it removes it from the index. This approach can result in stale data being returned if one of the nodes has not yet received the deletion.
The problem come from this {{line|https://github.com/apache/cassandra/blob/cassandra-2.1/src/java/org/apache/cassandra/db/index/composites/CompositesSearcher.java#L284}}. 

To avoid that problem we should remove the rows from the indexes only once they has been garbage collected.



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