flink-connector-mongodb-cdc/src/main/java/com/ververica/cdc/connectors/mongodb/MongoDBSource.java
public Builder<T> copyExistingQueueSize(int copyExistingQueueSize) {
            checkArgument(copyExistingQueueSize > 0);
            this.copyExistingQueueSize = copyExistingQueueSize;
            return this;
        }
/**
         * copy.existing.queue.size
         *
         * <p>The max size of the queue to use when copying data. Default: 16000
         */
copy.existing.queue.size
The max size of the queue to use when copying data.
copy . existing . queue . size The max size of the queue to use when copying data .
public Builder<T> copyExistingQueueSize(int copyExistingQueueSize) {
            checkArgument(copyExistingQueueSize > 0);
            this.copyExistingQueueSize = copyExistingQueueSize;
            return this;
        }
public Builder < T > copyExistingQueueSize ( int copyExistingQueueSize ) { checkArgument ( copyExistingQueueSize > 0 ) ; this . copyExistingQueueSize = copyExistingQueueSize ; return this ; }
copy.existing.queue.size
 <p>The max size of the queue to use when copying data.
copy . existing . queue . size <p > The max size of the queue to use when copying data .