在solr中创建碎片时……“碎片只能添加到“隐式”集合中”

Question

We don't need SPLITSHARD. I have given numShards=1 while creating a collection. We need shard2 for the same collection. we are getting below error while creating shard2 for the same collection.

Error:shards can be added only to 'implicit' collections

Answer 1

There are two methods of router implementation used by collection. default is "compositeId" router.

So if Collection is created with compositeId router method, we cannot create new shard . Only possible way is to split the existing shard.

As error indicates shards can be added only to 'implicit' collections

If you create the collection with implicit router you can add shards. you can additionally define a router.field parameter to use a field from each document to identify a shard where the document belongs. If the field specified is missing in the document, however, the document will be rejected

more on document routing