Hi experts,

I have a use-case with an external session token that is short lived and does 
not renew(ie, unlike a hadoop delegation token, the expiry time is not updated 
for this token). For a long running application (longer than the lifespan of 
the external token), I want to update the UGI/Credential object of each and 
every worker container with a new token.

If I understand correctly, all delegation tokens are shared at the launch of a 
container.

Is there any way to update the credential object after the launch of the 
container and during the lifespan of the application?

Best,
Ankur Khanna


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