ElasticSearch 維運 - Shrink Shard
Shrink the number of shards Brief introduction Move all indices data into the same data node and block writing Check data moving status util finish Call _shrink api and assign the new name and settings(included # of shards) Check the new indices creation status Set the replica back, and check the new one and old one whether the doc.count is the same or not. Delete old indices. (Be careful for