Dear   ALL!
I`m bulding my search feature  website  and  i just  doing somthing with api _river  try  to indexing data in mysql data base i have some problems  as.
1/ According ElasticSearch (ES) store data indexing data into Cluster/Node,when i index data from mysql as the same ?
2/i had generated Data from mysql to JSON file ,so how i can index data from source folder these  JSON ? If compare perfomance  with retrieve data index from mysql and from JSON file in folder which the best way?
thanks for read!