How to improve the performance when copying data from cosmosdb?
问题 I am now trying to copy data from cosmosdb to data lake store by data factory. However, the performance is poor, about 100KB/s, and the data volume is 100+ GB, and keeps increasing. It will take 10+ days to finish, which is not acceptable. Microsoft document https://docs.microsoft.com/en-us/azure/data-factory/data-factory-copy-activity-performance mentioned that the max speed from cosmos to data lake store is 1MB/s. Even this, the performance is still bad for us. The cosmos migration tool