Here is a cluster with 13 machines. And due to the lack of storage space, we set the replication factor to 1. but recently we found 2 machines in the cluster are not stable. so I'd like to exclude them from the cluster. but I can't simply set the replication factor to 1 and remove them due to the large amount of data. so is there a way I can force hadoop to move the block stored on them to other machines?
Thanks.
