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Change KMS Key Length


We have KMS keys that are in 128 bit length. Is there any way to change their length from 128 to 256 ?


For new keys, we know that using "hadoop key <keyname> -size 256" will create a key with 256 bit length. But, for existing keys, is there any way to change the length ?


@mdh_raghavendra: I think there is no way to update the existing key with length because the data which is using that 128 length will be invalidate. For best practice you have create a new key with 256 length and copy the data though NN to use the newly created 256 length.


Hope this helps you.


Thanks, Sridhar.