in flink-connector-cassandra/src/main/java/org/apache/flink/streaming/connectors/cassandra/CassandraTupleWriteAheadSink.java [62:72]
protected CassandraTupleWriteAheadSink(
String insertQuery,
TypeSerializer<IN> serializer,
ClusterBuilder builder,
CheckpointCommitter committer)
throws Exception {
super(committer, serializer, UUID.randomUUID().toString().replace("-", "_"));
this.insertQuery = insertQuery;
this.builder = builder;
ClosureCleaner.clean(builder, ExecutionConfig.ClosureCleanerLevel.RECURSIVE, true);
}