Hi all, I would like to have a clarification about Cloudera Search architecture, in  particular on the way it manage Replicas. I know that indexes are stored in HDFS and HDFS has its own replication  factor, so a directory is replicated N times in the cluster. I know that with "sharding" you can divide index in more pieces stored in different directory over HDFS. "Replica", as well, add more directories with index pieces copies. I would like to know: - why I need to add collection replica nodes, if I already have HDFS  replica? - in a N nodes cluster without collection replicas, what is the behaviour if a nodes goes down? How can I read and write the index's piece owned by the corresponding shard? - What is the best way to save storage without leverage both hdfs replicas  and shard replicas? - How can I achive high availability on Cloudera Search? I have never found documentation or clear explanation over this topic. Thank you so much for your support, Stefano ... View more