failed collection‘s metadata remains in ZK

Hello everyone, I am using Solr 7.7.2, I create a collection with shards=10 more than my nodes, then the service returned the following error: "Cannot create collection solrdemo. Value of maxShardsPerNode is 1, and the number of nodes currently live or live and part of your createNodeSet is 1.

MIGRATE without split.key?

Hello everyone, I want to migrate data from one collection to another with MIGRATE API, but if this parameter split.key is not specified, it cannot be executed. Why can't we remove this limitation? Is there a better way to migrate data? Thanks.

How do I import data from MongoDB to Apache Solr

Hello everyone, I am trying to index data from MongoDB into SOLR I see mongo-connector：https://github.com/yougov/mongo-connector，It has not been updated for a long time, and Solr cloud mode is not supported. Does anyone have any other suggestions？ Thanks.