We've been working the last couple of weeks to make our application work with ES 5.1.2 (current version is 2.3.1). After testing everthing, from indexing documents to searching document and everything in between, all seemed fine. So we uploaded the code and switched production to the new 5.1.2 cloud cluster.
But then the load on our webservers, which do the search requests to the elastic cloud cluster, skyrocketed from about 1 to 50. So we reverted all changes and swiched back to the 2.3.1 cluster and everything stabilized again.
The setup is the same on both versions, about 60 indices with 4 shards each. Mapping didn't change exept all
string fields have become
Does anyone have the same issues with ES 5.1.x? Or does anyone have any thoughts on what to change and/or test to solve this issue?
PS. I'm not sure if this belongs in de Elasticsearch or the Elastic Cloud category, feel free to move it if necessary.
PPS. Maybe this is related to this topic, but the cluster itself seems to handle everything just fine.