Hi Shalin,
Thank you for your answer.
I'm already using custom hashing to make sure all the docs that are going
to be grouped together are on the same shard. During index I make sure the
uniqueKey is something like:
productId!skuId
so all the skus belonging to the same product will end up o
The Grouping feature only works if groups are in the same shard.
Perhaps that is the problem here?
I could find https://issues.apache.org/jira/browse/SOLR-4164 which
says that once the sharding was fixed, the problem went away. We
should come up with a better exception message though.
On Fri, Mar
