MongoDB Chunks – Distribution, Splitting, and Merging
MongoDB Chunks – Distribution, Splitting, and Merging This presentation will discuss how the distribution of chunks can create scenarios where you may need to manually move, split, or merge chunks in your sharded cluster. Scenarios requiring these actions can exist with both optimal and sub-optimal shard keys. This can be especially true when a new change has been introduced to the workload. It may cause hot-spotting, unbalanced storage, or empty chunks. Example use cases will provide tips on detecting this issue, reasons why you may encounter these scenarios, and specific steps you can take to rectify the issue.
Database Administrator, ObjectRocket by Rackspace