in flink-connector-cassandra/src/main/java/org/apache/flink/connector/cassandra/source/enumerator/CassandraSplitEnumerator.java [132:147]
public void close() throws IOException {
try {
if (session != null) {
session.close();
}
} catch (Exception e) {
LOG.error("Error while closing session.", e);
}
try {
if (cluster != null) {
cluster.close();
}
} catch (Exception e) {
LOG.error("Error while closing cluster.", e);
}
}