.refresher.CarrierRefresher - Could not fetch config from bucket "price_datapool" against "192.168.103.134"

If I donot do the reblance after auto failover, the sequential insert operation will slow down a lot,
so i want to know why.
AndI find that
the cluster of 3 nodes has been created ,that is , the node slave3.hadoop.com has been removed ,and if so, why does the exception ‘Could not fetch config from bucket “price_datapool” against “slave3.hadoop.com/192.168.103.134”’ occur ?