Is arjuna's son aravana killed as human sacrifice for Kali before mahabharatha war ?

[gokulkr 1]

Adiyen i have one doubt after reading a event from Mahabharatha. I havent read actually original vyasa-mahabharatha (sanskrit). But i have read from translated versions that a human named "aravana" (called as arjuna's son) was given as sacrifice to Goddess Kali during Amavasa night before the mahabharatha war to ensure victory to pandavas. How our Satava God Krishna allowed this and moreover presence of Paramatma Krishna himself ensured victory to pandavas. So why need of this human sacrifice ? Pls someone clarify me regarding this.

 

Om Srimathe Ramanujaya Namaha

Om Namo Naryana

Om Namo Venkateshaya

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