The logging around chunk metadata refresh is confusing and is only done after the load has completed. This means that long refresh operations (which happen under a mutex) will block other calls, but will not output anything until the call completes.
In addition they are inconsistent between mongos and the shards.
- related to
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SERVER-25652 Slow chunk migrations when there are large chunk counts. 3.0, 3.2, 3.3.11
- Closed