Trying to create partition index but creating replica index in Couchbase Why?

Question

I'm trying to create a partitioned index using the below query in Couchbase

CREATE INDEX adv_firstOpen ON data(state, name, zip, status) 
WHERE type = 'Event' and name = 'firstOpen'
WITH {"num_partition":4, 
"nodes":["node1:9001", "node2:9001", "node3:9001","node4:9001" ]}

but creating replication index

what is the issue in creating an index query?

Answer 1

After reading the Couchbase document got an idea to create a proper index

CREATE INDEX adv_firstOpen ON data(state, name, zip, status) 
PARTITION BY HASH(state) 
WHERE type = 'Event' and name = 'firstOpen' WITH {"num_partition":4}

here num_partition is enough in with condition and PARTITION BY HASH must be mention