Used for Sor DIH, optimization for org.apache.solr.handler.dataimport.SqlEntityProcessor; This class will help us to resolve OutOfMemory Problems - it optimizes the SQL, adding ID and LIMIT strategies, for examples: 'select c1,c2,c3 from table_1 where id > 10000 limit 500';
Additionally, it will be better if DIH support multiple threads strategy.