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https://issues.apache.org/jira/browse/FLINK-26793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17511677#comment-17511677
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Etienne Chauchot commented on FLINK-26793:
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[~bumblebee] how do you create the cassandra sink ? Do you use standard
_CassandraSink.addSink(DataStream)_ or do you manually create the sink and call
{_}CassandraPojoSink#open(){_}. How does it work with Scylla driver ?
> Flink Cassandra connector performance issue
> --------------------------------------------
>
> Key: FLINK-26793
> URL: https://issues.apache.org/jira/browse/FLINK-26793
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Cassandra
> Affects Versions: 1.14.4
> Reporter: Jay Ghiya
> Assignee: Etienne Chauchot
> Priority: Major
>
> A warning is observed during long runs of flink job stating “Insertions into
> scylla might be suffering. Expect performance problems unless this is
> resolved.”
> Upon initial analysis - “flink cassandra connector is not keeping instance of
> mapping manager that is used to convert a pojo to cassandra row. Ideally the
> mapping manager should have the same life time as cluster and session objects
> which are also created once when the driver is initialized”
> Reference:
> https://stackoverflow.com/questions/59203418/cassandra-java-driver-warning
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