问题
I have a dc2.large Redshift cluster with 4 nodes.
And according to AWS Documentation (see image below), the number of slices per node in a dc2.large cluster are 2.
Then why do I see the number of slices as 4 when I run select * from stv_slices to determine the number of slices? I am running this using the Admin user.
Why is this the case, and how can I increase the number of slices in my nodes?
回答1:
When you use Elastic Resize to change the size of your cluster Redshift moves the existing slices to the new compute nodes so the number of slices per node will change.
https://docs.aws.amazon.com/redshift/latest/mgmt/rs-resize-tutorial.html#elastic-resize
来源：https://stackoverflow.com/questions/58374326/number-of-slices-in-a-redshift-cluster