damccorm opened a new issue, #20570:
URL: https://github.com/apache/beam/issues/20570
According to the Datastax document for session "{color:#4c9aff}*As a given
session can only be "logged" into one keyspace at a time (where the "logged"
keyspace is the one used by queries that don't explicitly use a fully qualified
table name), it can make sense to create one session per keyspace used. This is
however not necessary when querying multiple keyspaces since it is always
possible to use a single session with fully qualified table names in
queries.*{color}"(source:
[https://docs.datastax.com/en/drivers/java/3.0/com/datastax/driver/core/Session.html).](https://docs.datastax.com/en/drivers/java/3.0/com/datastax/driver/core/Session.html).)
The session fields in Mutator<T\> class should be cached and reused for a
keyspace and host.
[https://github.com/apache/beam/blob/master/sdks/java/io/cassandra/src/main/java/org/apache/beam/sdk/io/cassandra/CassandraIO.java#L1225](https://github.com/apache/beam/blob/master/sdks/java/io/cassandra/src/main/java/org/apache/beam/sdk/io/cassandra/CassandraIO.java#L1225)
Imported from Jira
[BEAM-11399](https://issues.apache.org/jira/browse/BEAM-11399). Original Jira
may contain additional context.
Reported by: manojks.
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