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Lai Zhou commented on CALCITE-2741: ----------------------------------- [~zabetak] , considering that: someone wants to implement his OLAP queries on OLTP system, For example,we write a lot of hive sql to do a batch job, which extracting thousands of variables to train a machine-leanring model. Now we want to extract the variables from a real-time datasource as input for the model. if we have a low-latency hive sql engine, it will save a plenty of time for developers. In my company, we implement a low-latency hive sql engine based on calcite to achieve this goal,it worked out fine . > extend the native enummerable implemention of calcite to support Hive SQL > --------------------------------------------------------------------------- > > Key: CALCITE-2741 > URL: https://issues.apache.org/jira/browse/CALCITE-2741 > Project: Calcite > Issue Type: New Feature > Components: core > Reporter: Lai Zhou > Assignee: Julian Hyde > Priority: Minor > > [~julianhyde], > I extended the native enummerable implemention of calcite to support Hive sql > ,include UDF、UDAF and all the SqlSpecialOperator,which inspired by apache > Drills. > I modified the parser,type systems,and bridge the hive operator . > How do you think of supporting a direct implemention of hive sql like this? > I think it will be valueable when someone want to migrate his hive etl jobs > to real-time scene. -- This message was sent by Atlassian JIRA (v7.6.3#76005)