- 
    Type:Bug 
- 
    Resolution: Duplicate
- 
    Priority:Major - P3 
- 
    None
- 
    Affects Version/s: None
- 
    Component/s: Sharding
- 
    None
- 
        ALL
- 
        Sharding 2017-03-27
- 
        0
- 
        None
- 
        None
- 
        None
- 
        None
- 
        None
- 
        None
- 
        None
If a collection on the CatalogCache has been invalidated (needsRefresh = true) and one refresh cycle has failed, that collection may not have a chunk manager anymore. Because of this, subsequent invalidations should not try to access its chunk manager.
- duplicates
- 
                    SERVER-27681 Better concurrency control on shard metadata refresh -         
- Closed
 
-