[jira] [Created] (CASSANDRA-8652) DROP TABLE should also drop BATCH prepared statements associated to

["Edward Ribeiro (JIRA)" <ji...@apache.org>]

Edward Ribeiro created CASSANDRA-8652:
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             Summary: DROP TABLE should also drop BATCH prepared statements associated to
                 Key: CASSANDRA-8652
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8652
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Edward Ribeiro
            Assignee: Edward Ribeiro
             Fix For: 2.1.2
         Attachments: batch-exception.patch


When a Keyspace or Column Family is dropped, Cassandra should evict the cached prepared statements that reference that keyspace and/or table as partially solved by the issue https://issues.apache.org/jira/browse/CASSANDRA-7566. 

Unfortunately, when it's a BATCH prepared statement it is not being evicted from the cache. Executing the BATCH statement after a drop of KS/CF, and subsequent recreation of KS/CF with same name, should NOT retrieve them from cache, or else the batch prepared statements will throw an error like {{java.lang.IllegalArgumentException: Unknown CF fd47fd00-a0d1-11e4-8be2-75ac7e9e28a5}} because the statements inside the batch statement still hold a reference to the old (pre-dropping) cf_id. 

The attached patch solves this issue.




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