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https://issues.apache.org/jira/browse/CASSANDRA-7566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14133309#comment-14133309
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Viju Kothuvatiparambil edited comment on CASSANDRA-7566 at 9/14/14 6:01 PM:
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A patch to this issue is attached along with a test class. The QueryProcessor
class now listens to the changes to schema, and cleanups prepared statements on
drop keyspace and drop table events. This is done by implementing
IMigrationListener inside QueryProcessor and registering the listener with
MigrationManager. This patch can be enhanced to fix the related issues, but
this being my first contribution to Cassandra, I would like the experts to
comment on it before I work on the others. (My sincere thanks to Tylor Hobbs,
Aleksey Yeschenko, Brandon Williams, Joshua McKenzie and Marcus Eriksson for
helping me out at the Cassandra developer Bootcamp)
was (Author: vijuk):
A patch to this issue is attached along with a test class. The QueryProcessor
class now listens to the changes to schema, and cleanups prepared statements on
drop keyspace and drop table events. This is done by implementing
IMigrationListener inside QueryProcessor and registering the listener with
MigrationManager. This patch can be enhanced to fix the related issues, but
this being my first contribution to Cassandra, I would like the experts to
comment on it before I work on the others. (My sincere thanks to Tylor Hobbs,
Aleksey Yeschenko and Brandon Williams, Joshua McKenzie and Marcus Eriksson for
helping me out at the cassandra developer bootcamp)
> DROP TABLE should also drop prepared statements associated to
> -------------------------------------------------------------
>
> Key: CASSANDRA-7566
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7566
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Environment: OSX 10.9.4 / JDK 1.8.0_05
> Reporter: Ben Hood
> Assignee: Yuki Morishita
> Labels: cql3
> Fix For: 2.1.1
>
> Attachments: trunk-7566.txt
>
>
> An integration test suite that drops and creates the same column family 3
> times causes the following error in the server log:
> INFO 15:40:34 Initializing gocql_test.wiki_page
> ERROR 15:40:34 Attempted to write commit log entry for unrecognized column
> family: b0e167e0-0dc8-11e4-9cbb-29a4872887f2
> ERROR 15:40:34 Attempting to mutate non-existant column family
> b0e167e0-0dc8-11e4-9cbb-29a4872887f2
> ERROR 15:40:34 Attempted to write commit log entry for unrecognized column
> family: b0e167e0-0dc8-11e4-9cbb-29a4872887f2
> ERROR 15:40:34 Attempting to mutate non-existant column family
> b0e167e0-0dc8-11e4-9cbb-29a4872887f2
> The test that reproduces this issue is here:
> https://github.com/gocql/gocql/blob/master/wiki_test.go
> Interestingly this issue only occurs after the common table is
> dropped/created for the 3rd time. If only one of the tests is run on its own,
> this issue does not arise.
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