I have a weird problem here. I have 12 nodes and all are connected and joined in cluster but when i do run node statistics (192.168../_nodes/stats) it gives me 11 nodes only. When I do /_cat/shards , for one node which is having problem it shows shards are started but no of documents, storage details do not show up.
What could be the problem? I restarted the problematic node, all got well. But after some time another node started showing same behavior. This is becoming communicable disease now. Not able to understand the behavior.