update README (#8)

README.md

@@ -1,17 +1,8 @@
 # RaySQL: DataFusion on Ray
 
-This is an experimental research project to evaluate the concept of performing distributed SQL queries from Python, using 
+This is an experimental research project to evaluate the concept of performing distributed SQL queries from Python, using
 [Ray](https://www.ray.io/) and [DataFusion](https://github.com/apache/arrow-datafusion).
 
-## Motivation
-
-This would make a good conference talk to demonstrate the power of building new query engines on top of the DataFusion
-framework. This project currently contains of fewer than 1,000 lines of code.
-
-## Status
-
-- Prototype. Not ready for use at all.
-
 ## Example
 
 See [examples/tips.py](examples/tips.py).
@@ -33,6 +24,10 @@ ctx.register_csv('tips', 'tips.csv', True)
 ctx.sql('select sex, smoker, avg(tip/total_bill) as tip_pct from tips group by sex, smoker')
 ```
 
+## Status
+
+- Proof-of-concept. Not producing correct results yet.
+
 ## Features
 
 - Mature SQL support (CTEs, joins, subqueries, etc) thanks to DataFusion

src/proto/generated/protobuf.rs

@@ -45,7 +45,9 @@ pub struct ShuffleWriterExecNode {
     pub plan: ::core::option::Option<::datafusion_proto::protobuf::PhysicalPlanNode>,
     /// how to partition - can be empty
     #[prost(message, repeated, tag = "3")]
-    pub partition_expr: ::prost::alloc::vec::Vec<::datafusion_proto::protobuf::PhysicalExprNode>,
+    pub partition_expr: ::prost::alloc::vec::Vec<
+        ::datafusion_proto::protobuf::PhysicalExprNode,
+    >,
     /// number of output partitions
     #[prost(uint32, tag = "4")]
     pub num_output_partitions: u32,