How a full node knows which chain to follow?

by user3652172   Last Updated October 09, 2019 10:28 AM - source

After Istanbul fork, my full node followed the longest chain which has the majority of the mining power.

It seems that the shorter chain gaining more hash power - understood that from the raising difficulty. What will happen when the shorter chain will have the majority of the hash powers?

Will my full node switch automatically to the shorter chain or there are other parameters which determine which chain to follow.

If not, when my full node will switch if at all?

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