[
https://issues.apache.org/jira/browse/FLINK-8655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16467134#comment-16467134
]
ASF GitHub Bot commented on FLINK-8655:
---------------------------------------
Github user ctamisier commented on the issue:
https://github.com/apache/flink/pull/5964
@zentol, @StephanEwen, @Bekreth
> We would have to pass the keyspace via the constructor as the
Configuration approach doesn't work for streaming.
I'm not sure to understand, the new unit test
(`testCassandraPojoNoAnnotatedKeyspaceAtLeastOnceSink`) is in the streaming
package (`org.apache.flink.streaming.connectors.cassandra`) and it seems to
work. Do I miss something about the general flink setup ?
> Generally speaking it isn't a problem to set the keyspace when creating
the connection. But I would like to know what happens if a POJO comes along
that explicitly sets the keyspace; is it ignored, respected or will it cause an
exception?
It takes the keyspace from the `@Table`. see `AnnotationParser.parseEntity`
method for `EntityMapper<T>` creation using `ksName`
It seems the default behavior of cassandra, I'm not sure we can do
something here..
> Add a default keyspace to CassandraSink
> ---------------------------------------
>
> Key: FLINK-8655
> URL: https://issues.apache.org/jira/browse/FLINK-8655
> Project: Flink
> Issue Type: Improvement
> Components: Cassandra Connector
> Affects Versions: 1.4.0
> Reporter: Christopher Hughes
> Priority: Minor
> Labels: features
> Fix For: 1.6.0
>
>
> Currently, to use the CassandraPojoSink, it is necessary for a user to
> provide keyspace information on the desired POJOs using datastax annotations.
> This allows various POJOs to be written to multiple keyspaces while sinking
> messages, but prevent runtime flexibility.
> For many developers, non-production environments may all share a single
> Cassandra instance differentiated by keyspace names. I propose adding a
> `defaultKeyspace(String keyspace)` to the ClusterBuilder. POJOs lacking a
> definitive keyspace would attempt to be loaded to the provided default.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
